;

Photonuclear Data - Abstract Sheets

1955 - 1982

Volume XIV (Lead - Actinium)

E. G. Fuller, Henry Gerstenberg

- U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards

National Measurement Laboratory

Center for Radiation Research

Gaithersburg, MD 20899

January 1 986

U.S. DEPARTMENT OF COMMERCE

N A-rir»kj ai °..ocAU OF STANDARDS

~ QC > 100

. U 56

83-2742

1986
y \
NBSIR 83-2742

> • • PHOTONUCLEAR DATA - ABSTRACT SHEETS

1955 - 1982

VOLUME XIV (LEAD - ACTINIUM)

KBS

RESEARCH

INFORMATION CENTER

/ V'* I A. A L>aJOO

.CLSt

no.X'Z-TU

)<?SC,

E. G. Fuller, Henry Gerstenberg

U S. DEPARTMENT OF COMMERCE

National Bureau of Standards

National Measurement Laboratory

Center for Radiation Research

Gaithersburg, MD 20899

January 1 986

U.S. DEPARTMENT OF COMMERCE, Malcolm Baldrige, Secretary

NATIONAL BUREAU OF STANDARDS. Ernest Ambler, Director

TABLE OF CONTENTS

Table of Contents i

Introduction 1

Lead (Natural) 3

Lead (A=204) ; 99

Lead (A=206) 105

Lead (A=207) 139

Lead (A=208) 181

Lead (A=209) 351

Bismuth (A=209) 357

Bismuth (A=210) 495

Radium (A=226) ' 499

Actinium (A=227) 505

l
’

. •

'

-

.

_

.
Photonuclear Data-Abstract Sheets

1955-1982

I. Introduction

As used in connection with this collection of data-abstract sheets, the term

photonuclear data is taken to mean any data leading to information on the electromagnetic matrix element between the ground state and excited states of a given nuclide.

The most cornnon types of reactions included in this compilation are: (e,e‘), (y,y),

(y,y

1 ) , (y,n), (y,p), etc. as well as ground-state particle capture reactions, e.g.

(a,y 0). Two reactions which fit the matrix element criterion are not included in

the compilation because of their rather special nature. These are heavy particle

Coulomb excitation and the thermal neutron capture reaction (n,y 0

). While the energy

region of particular interest extends from 0 to 150 MeV, papers are indexed which

report measurements in the region from 150 MeV to 4 GeV. Most of the experiments

listed are concerned with the excitation energy range from 8 to 30 MeV, the region

of the photonuclear giant resonance.

The hierarchical grouping of the photonuclear data-abstract sheets within the file

is by: 1. Target Element, 2. Target Isotope, and 3. by the Bibliographic

Reference Code assigned to the paper from which the data on the sheet were abstracted.

In this file, colored pages are used to mark the beginning and end of the sheets for

each chemi cal element. A brief historical sketch of the elementis given on the divider

•sheet marking the start of each section; the information for this sketch was derived

from references such as the Encyclopaedia Britannica. In those cases where the sheets

for a given element make up a major part of a volume, colored pages are also used to

delineate sections pertaining to the individual isotopes of the element. Each of the

sections of the file, as delineated by two colored divider sheets, represents a 27 year

history of the study of electromagnetic interactions in either a specific nuclide or a specifc element.

The data-abstract sheets are filed under the element and/or isotope in which the

ground-state electromagnetic transition takes place. For example, the abstract sheet

for a total neutron yield measurement for a naturally occurring copper sample would

appear in the elemental section of the copper file. On the other hand, a measurement

of the 62 q u 9.73 minute positron activity produced in the same sample by photons

with energies below the three-neutron separation energy for ^Zu (28.68 MeV) would

be filed with the sheets for 63c u . Similarly a measurement of the ground-state

neutron capture cross section in would be filed under while the corresponding

ground-state alpha-particle capture cross section would be filed under

At the end of this volume there is a master list of the abbreviations that have

been used in the index section of the abstract sheets. The listings are those used

in the final published index, Photonuclear Data Index, 1973-1981 , NBSI R 82-2543,

issued in August 1982 by the U. S. Department of Commerce, National Bureau of Standards,

Washington, DC 20234. In some cases two notations are entered for the same quantity.

The second entry is the abbreviation that was used in one or more of the earlier

published editions of the index.

1
'• ' I

II ’ vt *. >1 « t j . iI . . • V . II111
ra

i .

.

N

LEAD

1=82.

Knowledge of the metallic element, lead antedates recorded

history. Egyptian ruins contained coins or medallions of

lead. It seems probable that the extraction of lead from

its ores by smelting was N the first such practice recognized

by man.. The lead ores are widely distributed in nature and are easily smelted. Babylonian inscriptions were found

engraved on thin plates of metallic lead. The Romans used

it for water pipes, writing tablets, and coins. ' They also

used it for cooking utensils with lead poisoning as a frequent result. Marcus Vitruvius, an architect and

engineer under the Emperor Augustus, was familiar with the

toxicity of lead and observed that the laborers in the

smelter have pale complexions because of their prolonged

exposure to lead dust and vapor. 1

1 Darmstaedter, Ludwig, "Handbuck zur Geschichte der

Naturwissenschaften und der Technik," J. Springer, Berlin,

1908, 2nd ed., p30.

Pb
-(
i tM. i • v. ?. S. Baranov, V. I. GoLcanskii

Zhur. tksp. i Teorec. Fiz. 23, 74c (1955)

Soviec ?hys. JETP. .1, cl3 (1955/

method

Synchrotron; ion chamber monitor;

12/

n,2n'/ threshold detector

i Pb

REF. NO.

> " 3a

i

I

i

5

i

i

! 32

EGF

reaction RESULT

excitation

ENERGY

SOURCE | tETSCTCR

ANCLE TY*K RANGE Tvae range

G.XN

1 c i;:-2;: i tks. 3:- ! dst

i

'O'"'cV1 —*’1

i'lC . w. The oepenaence o; the yi*T Id

oi pnotoneuuone with energies higner

than 30 mev at an angle oi 90° (in units 10’ i8 cm 2 per tit. quant ateraaian on me mu« numoer A).

»o«u

<a ev . 7-1 4-441 USC Omm-OC 24 010- as 4 PHOTONUCLEAR DATA SHEET 5

U.s. DEPARTMENT OF COMMERCE

NATIONAL SUACAuOr STANDARDS
REF. J. L. Burkhardt

EL EM. SYM. A Z Phys. Rev. 100, 192 (1955)

method

Pb 32

REF. NO.

55 Bu 1 JOC

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G RLX 0 - 3 C 3 NAI-D 90

(C) (d) Fro. 3. Scattered photon flux.

Fic. 4. Differential photon scattering cross sections at 90*. The

points shown on the graph are taken from references 3, 5, 7, 8, and 22.

form MBS-418

(REV. 7.1 4. 94) (JSC OMM.OC 2601 0*P64 PHOTONUCLEAR DATA SHEET 6

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Ref. W.R. Dixon

Can. J. Phys.

^

785 (1955)

Elem. Sym.

Pb

ftef. No.55 Di 1

82

Method Synchrotron; neutron spectrum, angular distribution; nuclear

emulsion; scintillator; ion chamber NVB

Reaction EotiE

s

ad E J

rr Notes

Pb(y,xn)

Pb(7,xn)

70

E =

n0.5-8

Used scintillator for angular

distributions; curves fitted to

2

a + b sin 9.

Used emulsion for spectra.

FiC. 3. The energv tii'fnluifHMi *4 ph*’(o<trutmn« fmm lead. The v>iid and ria*hc*d . ir\e« w* calculated for the wapnation 14 iir^t and -et **nd iH-utfni*. rc*pecnvelv. J - I I L TABU-: II Experimental v.an s k»r h,,i

Target

Correction factor

for cutti-riiic Corrected h/a

Lead 1 10 -0 08 ±0 ns

Tin 1 .ns 0 12 ±0 17 Copper 1 48 0 28 ±0 15 Iron 1

.

85 n on-H) 25 Aluminum 1 17 0 80 ±0 20

Carbon 1 8 i n ±u s Beryllium (I) Beryllium (2) 2 *;

1 85.

• 1.2 ±11 1

I

I ^ - Th«* I'ViiLr di« r rilitition* <if phi»tnn*iitr«*i« a* measured %ith Ihe fine Mjlphm*-

form NBS-418

<•• 1*631 USCOMM-OC 18936-P63 PHOTONUCLEAR DATA SHEET 7

U.S. DEPARTMENT OF COMMERC =. NATIONAL 3URCAU OF JTAMOARDS
REF. EL EM. i f M. Sven A. E. Johansson

Phys. Rev. £7, 434-43 (1955) Pb 82

METHOO

Synchrotron; ZnS counter; ion chamber

REP. NO. 55 Jo L NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N RLY THR - 65 C 65 SCI-D 5

- + DST

G,N RLY THR - 65 c 65 SCI-D 10 - + DST

Fic. 9. The angular distributions of the neutrons from lead. Counter thresholds at 5 and 10 Mev.

Curves of form a + b Sin Q

form M8S*418

(REV. 7»14->«4) USCOMM.OC 26010«P04 PHOTONUCLEAR DATA SHEET 8

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAUOF STANOAROS
REP. ELEM. SYM. A

K. G. McNeill

Phil. Mag. £6, 321 (1955) Pb 32

methoo REF. NO.

55 Me 1 EGF

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE

TYPE RANGC TYPE RANGE

G.XN RLY THR - 22 C 22 NAI-I 90

Target Count* in 30 minutes 22 mcv yield mol/r Yield/ inolr

element per 1000 monitor counts relative to copper X 10~4

Cn 288 ±15 10 3-2

Cd 647 ±28 41 ±0-3 13 Hg 661 ±26 9-5 ±0-0 30

Pb 470 ±17 8-4 ±0-5 27

FORM NBS-418 { CV. T.IAMI USCOMM.OC 2«010-P«4 PHOTONUCLEAR DATA SHEET 9

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OP STANDARDS
Ref* E.G. Fuller, E. Hayward

Phys. Rev. 101, 692 (1956)

Elem. Sym.

Pb 82

Method Betatron; photon scattering; Nal spectrometer

Ref. No.

56 Fu 1 NVB

Reaction E or AE

s

<7d E J

tt Notes

Pb(7,y) Bremss.

k-ko

Detector at 120 .

Cross sections given here are 13$ too

high due to erroneous cos 9 factor in

denominator of Eq. 5. [See footnote

8 in Phys. Rev. 106, 993 (1957)1.

rrr

li

J lt‘ 4 t {

1 ++- t\,

U +

I

u

f Jt

1

1- It;

i + T

i .*

' ii

*—. j— i

-r* .—*—

' att It '! t

4 E. R. Gaerttner and G.*L. Yeater, Phys. Rev. 76, 363 (1949).

* Dressel, Goldhaber, and Hanson, Phys. Rev. 77, 754 (1950).

» M. B. Stearns, Phys. Rev. 87, 706 (1952). form NBS-418 uscomm-oc issse-Pea

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 10
Ref. W.K. iartley, W.E. Stephens, E.J. Winhold

Pnys. kev. 104, 178 (1956)

Elem. Sym.

Pb 82

Method (p,r) source, 480 kev protons.

Ref. No.

5 6 Ha 1 EGF

Reaction E or AE <7d E J

tt Notes

(Y,xn) Average Li cross section is 310 mb; cross section with detector response

weighted for low energy neutrons,

W

Assumed ratio 1Y

.

6/

1I4- . 8 = 1.7.

Calculated cross section at 1^.8 and

17.6 MeV assuming cross section

curves measured at Pennsylvania and

Saskatchewan (refer Table i).

13.75 ^.5 a°= = 735 mb.

form H6S»41S UlCOMM«OC

PHOTONUCLEAR DATA SHEET 11

U.S. DEPARTMENT OP COMMER

NATIONAL BUREAU OP ST ANOAF
Ref. M.E. Toms, W.E. Stephens

Phys. Rev. 108, 77 (1957)

Elem. Sym.

Pb

Ref. No.

57 To 1

82

Method plates; 23MeV Bremss.; BF_ neutron counters.

5

EGF

Reaction AE crd E J n Notes

(Y,xn) ~ 8-22 13.8 2A a =55 barns, max

Proton yield of 1.^2X10^ n 's/mole r is low compared to Price and Kerst

[Phys. Rev. 77. 806 (1950)] value of

2.3 X 107 n/mole r and Montalbetti,

Katz and Goldemberg [Pnys. Rev. 91.

859 ( 1953 )] value of 2.7X10T n/mole r,

Neutron spectron measured for 23 MeV

Bremsstrahlung.

Fic. 3. Photoneufcron cross section of lead as a

function of photon energy.

Fig. 4. Angular distribution of j>hi*i«»nrutr<»ns tmm lea* I having

energies >4.0 Mcv. The curve is **f the form «in^. with a />,• •< ^itio of 0.23.

, J .A „ i ——,

x;0 6

.

‘ k l.ntftf\ >lt*tril.uti«>n «»f phot' .neutrons from lead wit

» • ' \ 1.1 -c. .•i.int-uimn -•» i*h*.toneuf r.m* ;r..n» lean witn curves taUufatcd t..r 'Yvafviratinn'’ with residual nuclear ten

'ifv« « ..n.. i - . xu-ratiMn” with r»%»lualI niuU-ar n-mo jiratufes. II Mev Mashed*. 1.15 Mev (solid). and 2<-

f .ii ur *-»-1 II Mi\ dasdinl* I *' Mcv and - W \| cv Molted', and with the correction for f-0 neutron tran- Mi v aim r... , .rnt fi'.n tor neutron ir.in«»mi**M»n thmuen mrnmin through the rrmntitgal liarner °

. -»»i|-iC.ll i*.»', Mi f • form MBS-418

<S*«-«3> USCOMM-OC I8SS6-PS3 PHOTONUCLEAR DATA SHEET 12

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Ret. T. Asada, M. Masuda, M. Okumur a, J. Okuma

J. Phys. Soc. Japan 1^, 1 (1958)

Elem. Sym.

Pb

AeL So. 58 As 1

82

Method Betatron; angular distribution; scintillator; ionization chamber

EH

Reaction E or AH a d E J e Notes

Pb (7, n) Bremss.

17

Angular distribution is of the form,

2

a + b sin Q

where b/a = 0.30±0.11

i

rrm ar—iil—

- 1 - * - - 1- roMM MIS-411

(9*1*4 SI uSCOMM-OC 1 9B99*R9S

Table 1. The raluaa of b a

F.nenrr Al

Tartet Cunucleus Pb Da Detector

Present 1 17 Mae! 16*08 0 17 c 0 04 0.30*0.11 1.29*0 S3 fmmrrich*

Lhioa (70 Mar) 0 34 1 0.29 0 23 *0.15 uniform 1 2t0 4 Hornyak*

Halpern > 70 Mev» 1.39 f-0 11 K mme rich* Pnca 22 Mae) 0.33 0.64 uniform Al ••». pi

•

Johanvun (69 Mae) 1 0.9 1 5 Hornyak*

a> A KiMiUaiuw detector with a ZnS pararftn -l.ui-ite light' guuir

h. A rcmt illation detector «itli • ZaS-Lucita.

c \ fart neutron detector by (n»iwrmr the beta activity M AI*7 •. /# vt*»; react h ei.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 9TANOAROS

PHOTONUCLEAR DATA SHEET 13

-I

Wi-hlfh

r'liXfU**'
:.G. Fuller, B. Petree, M.S. Weiss

Miys. Rev. U2, 55^ <1958)

CL CM. SYM. A

Pb 82

Betatron; ion chamber

REF. NO.

58 Fu 1 NVB

REACTION RESULT EXCITATION ENEROV

SOURCE detector

ANGLE

TY PC HANOI

G, XN RLX 7-40 C 7-40 BF3-I 4PI

CF DAN^S THEORY

Fio. 6. Mon energy and width of giant resonances. “£#" and ‘T” are the mean energy for photon absorption and the full width

at half maximum of the giant resonance obtained from dashed

histograms as in Fig. 5. No attempt was made to fit data with

resonance curves to obtain these parameters. Tabu L Target properties and results.

Element Form used Weightgrams barns

S*dE* NZ/A

Mev-b

"r‘* Mev

Sn Sn 4.S1 0.30 0.064 5.0

i i 8.55 0.36 0.085 6.0 La La 10.43 0-34 0.063 5.2 Ce Ce 4.99 0.45 0.080 4.5 Sm SmjOt 2.90 0.26 0.073 8.6 Tb Tb,0, 3.04 0.39 0.087 8.7 Ho HojO, 1.87 0.41 0.079 7.5 Er Er^Oi 5.41 0.50 0.100 8.5 Yb YbsOs J.57 0.50 0.090 7.0 Ta Ta 8.41 0.49 0.077 6.0 Au Au 3.16 0.68 0.085 4.2 Pb Pb 8.05 0.75 0.081 3.8

• «*(ir.M) it the maximum value and "I*” the full width at v*(v.*)/2 of the neutron production crosi section corrected for multiple neutron emission. Data were not fitted with resonance lines to determine these values.

k Integrated neutron production cross sections corrected for multiple neutrons above (t.2») threshold.

oirves represent tL integ^neutro^ f£V£

Um

'h rbiUm’ m

lea?‘ 1?

e P°‘/ntS and s,nootk +3*W»)+. ... The scales are normalized to give ^( vr

) "^”)+2tfWn)+' (^'

obtained by propagating the statistical uncertainties 7v/*n ; n th

tal neutron yield at 40 Mev. The errors indicated

tri*. Solid histograms represent Sffer^c^ dau th[°u«h ** i»«8ral cross section n.

multiplicity above the (yjn) threshold. ^ curves' Dashed ^tograms show result of correcting for neutron

S-41«

uN«f

t

• * n. r«4

U.3. 06PARTMENTOF COMME3C: national hu«cau op j r A ,s , f A i 4 PHOTONUCLC .R DATA SHEET 14
REF.

V. C. Barber end U. D. George

Phye. Rev. U6, 1551 (1959)

i MCTXOO

EL CM. SYM.

Pb 82

REF. NO.

59 Ba 3 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE

E t N ABY THR - 36 D 10-36 BF3-I 4PI

ELECTRON ENERGY E0

I.VEV)

F.o. S. Yield of neutrons per incident electron as a function o:

initial electron energy for the natural lead targets ot

. v-rtou*

tlucitr.uae*. The number 50 refers to the value of the VI curve

at the indicated energy.

Tadm: f. Thicltnesscs of the targets used in the experiment.

•.vi;n the exception o; heavy '.eater, targets conta>neu oOio;.es

in the!: naturally-occurring proportions.

*< *ii length*/

: ic^vv wa;cr (i.r/)s ••• : »•

I.e 0.5n9 O.Cio67 c-r 0.W1 O.NS AM 24.19 i.lKl Cu-A 1 J72 n.iuji

(•;:-! 1 b.2G

(ji-1. 2bJ(* 2.0.S Cu-iU od.M’i o.i.

;

Cu-iV S.Y.l.i T , / •»• f G.21

r 11.42 l.'iT Th-i i I ITJO 2., ).s

i *;#•# \ 22.59

i-b-vt j4.t2 5.'m U-f 0.17 1.14

i:-rr 12.42 2JU

i-ur IM.1

Co.-.crdc 2s.i 1.19

:c • .o' *-

ONE RAOlATiCN LENGTH

TARGETS

E

9

• 34. 1 M£V

• EXPERIMENTAL POINTS

• CALCULATES POINTS

10

= 3

I_ I

r.

i

•

: \ i

i \ ;

» . NORMALIZATION-

• POINT

i ;

2 -»

i

20 40 SO 60 >00 ATOMIC NUMBER 2 ^'Npcrintental and expected yield* of neutrons per

at e.ectron tor l-raitiation-lenuth targets at J4.o Alev, a* .. ... .a-c. o; at.er.tc number /.. The experimental yields -..ere

.. i .

.'j y ntv.i.tf.e tue measured yields from the target* l..delcd

‘ *“* •*claT tiuciir.esses dated in Table I. The e.WeCted

•* • - a '•‘"c caicu.alcu . rom c.\jj reason

fomu MBS-411

(*EV. USC OMfc*»OC 2S 01 0» PS 4 PHOTONUCLEAR DATA SHEET 15

U.3. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. EL EM. STM. a L S e G. Cohen

Nuovo Cimento, 931” 37 (1959) Pb 82

METHOD

^F(p,a)^0 reaction

REF. NO. 59 Co 6 NVB

REACTION RESULT EXCITATION SOURCE OETECTOR

ANGLE ENERGY TYPE RAN GC TYPE RANGE

G,G ABX 6,7 D 6,7 NAI-D 30

(6.14. 6.91. (6.14, 6.91

and 7.12) and 7.12)

Average elastic cross section do

| ^

30

° = 5 x 10

-28 cm steradian at E = r

7 MeV.

Elastic cross section da

| > 3 x 10

-29 cm

30

steradian at E^ = 6.14 MeV.

energy 2.9 .MeV. Mean angle of scattering 30’.

Pig. 3. - Spectrum of v-rays seal loreil from' lead. Primary v-rays mostly 8.14 MeV. Proton energy

1.5 MeV. Mean angle of scattering 30".

Energy of primary

V-rays (MeV)

! Energy of scattered V-rays (MeV)

Approximate energy of excited

levels of Pb nuclei produced ! after inelastic scattering (MeV)

7.0 (average) 7.0

6.1

! 5.0 7

I form N8S-41S 4.5 (REV. 7- 1 4- *41 JICOMM.OC 2S01 0oP44

0.9

1.4 f 2.5 MENTOF COMMERCE

IAU OF STANDARDS 16
(

i

REF. ELEM. SYM. A 2 P. Paul and U. StierLln

Nucl. Phyaica 576 (1959) Pb 32

METHOD REF. NO.

59 Pa 3 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYRE RANGE TYRE RANGE

G, G ABX 17 D 15,18 NAI-D 17 90

Source Li(p,Y) with E

P = 500 keV.

Tabeixz 1 Die gemessenen totalen Streuquerschnitte in cm* unter Annahme von El- und E2-Streuung

Element eigene Werte

Fuller und

Hayward >*) Steams *)

Pb (5.8±l)x 10-*» (4 — 8) x iO-** (5-9) x lO-"

A1 (2 ±l)xl0-» (2-8) x 10-“

0 (1 -5) x 10-**

c (5.8±2) x 10-**

Durchdie Wahl der MeQgeometrieergibtsich fur erne El- wieeineE2-Winkelverteilunginnerhalb

der Fehlergrenzcn dcr numerischen Rechnung der gleiche Wert far den totalen Streuqucrschnitt. Die angegcbenen Fehler enthalten nrr den Fehler in der Bestimmung des pnmarcn

y-Flusses und die statistischen Fehler der Streuraten. Zum Vergleich jind die entsprechcndcn

Ergebnisse^on.Fullcr und Hayward 11

) und Steams*) gegenubcrgestellt. Die angegebenen Werte gehAren jeweils zu den Fehlergrenzen.

roDM MBS-411 mcv. t-i*-»4) JICSMU.OC 2S01 0-P4 4 PHOTONUCLEAR DATA SHEET 17

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAN DA R D 3
U.3. DEPARTMENT OF COMMERCE NATIONAL BUREAU. OF STANDARDS

form NBS-418

(8-1-93) USCOMM-OC 18888-P83 PHOTOHUCLEAR DATA SHEET 18
Ref K. Reibel, A.K. Mann

Phys. Rev. 118, 701 (i960)

Elem. Sytn.

Pb 82

ftef. No. 60 Re 1

Method Y's from F^(p,oy) reaction; protons from VandeGraaff; Nal JHH

Reaction E or AE E

o r S'" J

IT Notes

Oy,y) V 2 * 05

E - 2.40

P

Zy - 6.9

Ey » 7.1

1

1

<

(ct> = 15 ± 2.2 mb

D(average level spacing based on j):

3. If ± 2.2 kev

rycfiy - o.6 ± 0.3

P = 0.6 ± 0.3 eV

f =0.36 ± 0.15 eV

yo

<o>= 7. If ± 1.2 mb

D( average level spacing based on j):

1.3 ± 1.0 kev

r ff = 0.2 ±o.i

yo' y

?

y

= 1.0 ± 0.5 eV

r = 0.2 ±0.1 eV

yo

a If .

8

± 1.1 mb

= 18 ± 4 mb

foam NB$*4li

(••Ml) use OMM-OC H9B9-P63 PHOTONUCLEAR DATA SHEET 19

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF ST AN OAR 03
CLEM. SYM. I A a.3. £eker, K.3. McNeill

Can. J. Phys. ^2, 1158(1961) Pb

METHOD betatron; fast neutron yield; angular distribution; A1 and Si

threshold detectors; ion chamber

okr. no. 61 Ba 2

t z

82

NVB

REACTION RESULT EXCITATION ENEROV

SOURCE OETECTOR

ANGLE TYRE RAMOS TYRE RAMOS *

G,XN ABY THR-22 C 22 THR-I 3-+ DST

G,XN ABY THR-22 C 22 THR-I 5-+ DST

In Tables 2 and h:

a * average cross section of detector

weighted with neutron spectrum

* "3-+" is the detector range of

Aluminum and "5-4-" of Silicon.

$ a neutrons/lOO roentgen/mole

W(e) - t

Cl + A

n

Pn

(cos

n=l

TABLE II Normalized yields for aluminum detectors

Element

AI(*.y) reaction Al(s,p) reactions

30* 90* 150* a* 30* 60* 90* a* at a* (o*)*XlC

Bismuth 300 567±130 620 541 ±85 3632 5139±290 3168 4306±185 0.06±0.06 —0.35±0.1 17.76 478 423 ±130 Ml 484 ±85 2562 5353 ±290 2955 4144±185 -0.05±0.06 -0.53±0.1 16.87 Lead 428 312 ±120 725 429±77 3123-

5754 ±260 3154 4591±160 —0.004±0.05 —0.51±0.07 18.68 Tantalum 378 367±100 688 441 ±122 2757 3024 ±425 2088 2757±275 0.14±0.14 —0.19±0.17 11.22 Lanthanum 208 222±110 330 243 ±70 2139 3371 ±250- 1891 2768±100 0.05±0.07 -0.43 ±0.10 11.27

Arsenic 77 100±50 108 97±32 788 937 ±115 764 865±74 0.02±0.11 —0.16±0.14 3.52 Copper 13 65±30 70 55±20 710 748±70 569 700±45 0.11±0.08 —0.14±0.11 2.85

•(r*{ - LOTXIO*** SMbsrs msirb.

. -r- - TABLE IV -

I 11 III IV V VI VII Element a* at a« (ae)X10»* nni(22Mcv)X10*

Vanadium 245(1±0.06) 0.01 ±0.08 -0.00±0.10 6.05 0.21 0.12 Chromium 164(1 ±0.03) 0.04 ±0.04 —0.05 ±0.05 4.05 0.17 0.10 Manganese 308(1 ±0.02) 0.07 ±0.03 -0.09±0.04 7.61 0.25 0.12

Iron 200(1±0.03) 0.05±0.04 —0.17±0.05 4.94 0.18 0.11 Cobalt 300(1±0.02) 0.08 ±0.03 —0.22±0.04 9.63 0.26 0.15

Nickel 145(1±0.05) 0.07 ±0.07 -0.23 ±0.09 3.58 0.12 0.12 Copper 347 (l±0.02) 0.05 ±0.03 —0.29±0.04 8.57 0.30 0.12

Arsenic 482(1±0.03) 0. 11±0.04 -0.24±0.05 11.91 0.33 0.15 Rubidium 638(1±0.05) 0. 13±0.06 —0. 14±0.08 15.76 Strontium 408(1±0.05) 0.10±0.06 —0.17±0.08 10.10 Yttrium 290(1 ±0.10) 0.08±0. 12 —0.12±0.15 7.16

Silver 590(l±0.04) 0:10±0.06 —0.22±0.08 14.57 0.87 0.07 Cadmium 905(1 ±0.02) 0s 02 ±0.02 -0.26±0.03 22.36

Iodint 1133(1 ±0.03) 0.04 ±0.04 —0.29±0.05 27.99 1.42 0.08 Barium 1048(1±0.04) 0.10±0.00 —0.38±0.08 25.89

. Lanthanum 1595(1±0.02) 0.02 ±0.03 -0.42 ±0.04 39.40 1.04 0.16 Cerium 1316(1 ±0.05) 0.05 ±0.00 —0.39±0.08 32.50 Dysprosium 1652(1 ±0.03) 0.04 ±0.10 —0.34 ±0.13 40.80 Tantalum 1558(l±0.02) 0.04 ±0.03 —0.22 ±0.04 38.48 2.60 0.06 Tungsten 1365 (l ±0.02) -0.07 ±0.03 -0.24 ±0.04 33.71 Mercury 1345 (l ±0.02) 0.04 ±0.03 —0.31±0.04 33.22 Lead 2274(l±0.01) 0.02 ±0.02 —0.42±0.03 56.17 2.72 0.08

. Bismuth 2162(l±0.02) 0.05 ±0.03 -0.45 ±0.04 53.40 1*34 0.06 Thorium 3031 (l±0.04) 0.0G±0.05 —0.32±0.07 74.87 Uranium 4630(1 ±0.02) 0.05 ±0.03 —0. 17±0.04 114.36

<04) m tffyiy n — Error* arc Macdant error* due to counting (taiUtlcr only.

' ro*M M8S-4tt miV. 7-U>«41 USC OMM-OC MOIO.OM PHOTOHUCLEAR DATA SH6€T 20

UO. OERARTMENTOR COMMERCE

NATIONAL SUMAUOF STA.V.3AR3S
REF. J. Miller, C. Schuhl, C. Tzara

J. Phys. Radium 22, 529 (1961)

EL EM. SYM.

Pb 82

MCTHOO

Positron annihilation; neutron cross section; BF^ counter;

ion chamber

REF. NO.

61 Mi 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE MANSE

G,G ABX 10-22 D 10-22 NAI-D 10-22 DST

G.XN g*rn ABX 8-20 D 8-20 BF3-I 4PI

V70

Fie. 8. — Section efilcace totale da diffusion dlastique et

* module au carri dc l'amplituda da diffusion vers l’avant. Cas da Nl, Pb et 3i. Cerdes vides : module au carr6 des amplitudes da dif- fusion absorptive calculdes ft partir dcs sections efficaccs «(T. n) -p 2o(f. 2n) -r «(y. np) + . . . (soule la premidro , reaction interviont vert (14 McV).

• Corclet plcins : limites •*)* do la section cfllcaco da diffusion & haute dtiergio. Ki» rdalitd, u cause dcs inter- actions misoniques dcs nuduont et do 1’incertitudo tur

la limits i haute dnergie da la diffusion.il vaudraitmieux

parler da la section afllcaca da diffusion vers l’avant au

deli da la resonance gdante at avant la tauil photomdsoniqua ; on paut montrer qua l'axprcssion

(ZaVAf**)* (1 + 0.8*)

»

oft seat la fraction do fore* d’Achange antra nudAona.est

miaux appropride.

Ea polntiltts : rdaultaU da Puller at Ilayward.

fie. 7. — Distribution sngulairo dcs photons “

. diffuses ilastiquernant tur Pb.

IMV. 7-lfcMI mcom oc a«oio>p«4 PHOTOMUCLEAR DATA SHEET 21

U.S. DEPARTMENT OF COMMERCE

NATIONAL BURIAUOP JTANOAROl
PHOTONUCLEAR DATA SHEET 22
***• T. Tohei, M. Sugawara, S. Mori, M. Kimura

J. Phys. Soc. Japan l6j 1657 (1961)

Elea. Sya.

Pb

Ref. No.

82

Method 25 MeV betatron; photon scattering; Nal(Ti) spectrometer;

ion chamber 61 To 1 c

5

NVB

Reaction AE <Jd E J * Notes

Pb(y,7) Bremss.

5-12

7-2

References

1) E. G. Fuller and E. Hayward: Phys. Rev. 101 (1956) 692.

2) see E. Segre: ExpsrimsiUal Nuclear Physics,

vol. 1, p. 346.

3) J. S. Levin and D. J. Hughes: Phys. Rev. 101 (1956) 1328.

4) K. Reibel and A. K. Mann: Phys. Rev. 118

(1960) 701.

Table II. The correction of the enemy scale

Energy in Ref. 1

4.0 Me

v

6.0

8.0

10.0

12.0

14.0

should be read

Me’.

. 5

Detector at 120°

Table II from J. Phys. Soc. Japan 18,

17-22 (1965)

“

<*. r.rt

0>O>

50 iIL

Iso'oce ocwroarcc .:36%

Poi0? 2 22.6%

Pb”*’ 52 4 %

i i..;

form NBS-4U

USCOWM-OC 1BSSB-PBS

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PH0T0NUCLEAR DATA SHEET 23

^

wi

nin.w i

REF. H. Breuer

Z. Naturforsh. 17a, 58^ ( 1962 )

Betatron; neutron spectrum; L1I spectrometer; ion chamber

ELEM. SYM. A

Pb 82

REF. NO. 62 Br k NVB

REACTION RESULT EXCITATION SOURCE DETECTORANGLE ENERGY TYPE ranok TYPE MANGE

G,N SPC 8-33 c 33 SCI-D 0-11 90

( 32 . 5 )

Figure 8 is figure 7 minus the statistical part.

<Ur.

Abb. 8. Spcktrum der „direkt“ emituema PhoUmBuuoaea.

Abb. 11. 1 ni\/Ea a Is Funktion dcr Ncutronencnergic .

•

W ORM HBS-41S

(REV. 7.I4.MI UICOM.OC MOtO.R.4 PHOTONUCLEAR DATA SHEET 25

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARO*
U.S. DEPARTMENT OP COMMERCE

NATIONAL auNEAU OP STANOAROS

form N8S-418

CO-t-O 31 'jscomm-oc iaes«>p«3

PHOTONUCLEAR DATA SHEET 26
PHOTONUCLEAR DATA SHEET <?7
Ref- V.G. Shevchenko, B.A. Yurev

Nuclear Phys. ^95 (1962)

Elem. Sym.

Pb 82

Method 35 MeV betatron; emulsions

Ref. No. 62 Sh It. JHH

Reaction E or AE <7d E J

tt Notes

Pb (y,p) Bremss.

22.5

33.5

Parameters a, b and p for

uu(0p) = a + b sin2

0 (l + p co6)‘

in Table I.

«. 25-* 73 08 1.0 0.4 3

•

* 22.8 8. 73- 11.73 2.8 1.9 1.2 ms 20 >11 75 1.4 •» 30 2.6 * 33

Pt 78 7 . 25-103 2.1 1.1 2.6 %33

33.5 > U 25 0 5 0 8 3.4 *70

3. 23- lo ° 23 > 10.23

1 . U3

0 73 * 10 ^30

3 23-10 23

10. 23- U. 23 >14 23

1.9 "1.13l 2

0.03

l

«•

1.2 3.0 33

% 20 %43

% 70

hum it

da aad eta

-X-.

*1“ ISA =>&-*.» xl«» VniiTitaTA

--** • saa ~ tsxur -»’•'?»

,--W. sit «».»•« w.j-agisL'air :lbxI<a

*•«*»«* .?•£-** -« ,*»» • P.?:-* m -435

.. miw . v.. « ixi9

<'• f*- —

~

^V> ig*.- -V*. -»

WS-11. Anfxlanlaai ltn HiMaoSpAotoynxonatru WaTh. uprrtaMtal pobaa lor m ft) MoT u <!! kr xH dob tor £, - Ul-lass 3bV iad aoiad iqim tar X, > ICS* lbV. bjtb cam o( E_ - SS t M.V oatrta dnb dam I, - tU-iaU MaV. OIIMI Inn

»i ~ *- — , - nr — :

•) Tb jrtaid Ywta

bbW.t Ibltai. Pk*ta *»»• M (IMS) «M

InHta.i ud A. G. W. Cum. Ihya In. W (tSSS) I1M .' I) M. X. Ta

S) M. M. HnHta.o t S) W. C. Barter an* V. J. Vutayn. bbi Fbrtaca I* (ISM) Ml «im TmitaW.l ll^lm, Fbrm. tan. « (ISM) MS

*) K. D. Makfeamkr. JETP M (ISM) M

•)».«. T.ytar. Noclanr PHytacr IS (1SSS) < _

T) A. ©. W. Cum. W. Him ate L. ballltln. SI (ISft) I S) V. Clntalta. V. O. Smteako and !». P. TtaSn. Mapoti at <te 1 tar Hxctaar InrtnnX L»» and Hill «ufl

S) B. 0. Canal. Phya. Mac. S3 (1SS1) 1M 5**-

IS) V. . ktatar. T.fcttUxtall4tl>Ms]«I?« I _L FORM N 85*41

8

(S-1-«3) USCOMM-OC 18SS9-P63

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 23
R. Bosch, J. Lang, R. Muller, W. Helva. Phys. Acta j56, 625 (1963)

METHOD

Wolf 1

i

Pb

REF. NO.

82

n capture source; photon scattering; Nal spectrometer 63 Bo 2 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANCLE

TYPE RANGE

G,G ABX 9 D 9 NAI - D DST

Fig. 10. Experimented bcstitnnuc W irkungs<juersohnittc fur die Strcuung von 9-McV-Quantcn an 3lui. Die gcstriehcltc Ivurvc gibt <lcn thcorctischcn Wert i;ir Thomson- und Raylcighstreuung (nach Bethe) ; in dcr ausgczogcncn ivurvc ist zudem dor Dcibriickcffckt (nach cincr Extrapolation aus den Wcrton Zerxiks) mit cinbczogcn.

i.Z. -ePA-TMENT OF COMMERCE

: . A : ~ N A L. BUREAU OF ST ANCaROS

w ohm MBV41I

(REV. 7.I4.S4) USC OAAM.QC 2S01O-PS4 PHOTONUCLEAR DATA SHEET 29
H.H. Fleischmann

Ann. Physik 12, 133 U963)

METHOD

Pb 82

REF. NO. Radioactive source; photon scattering; Nal spectrometer

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE

TYPC RANGE

G,G LFT 2-6 D 2-6 NAI-D

Peak at 5*2 MeV

r = 0.9±0.4 eV

o

G-WDTH

I Imp /Kana! 200 Min

.

I 0 10 30 <>0 50 60

2.0 10 *0 SJO 6.0 Me/ Abb. 6. Pb-.Streu.-.pcktrum mit Cd-Quolle (gestrichelt ungcfahrcr nicht stroukorperbedingter

Untergrund)

form NBS-41S

(R EV. 7-1 4- Ml

USC OMM-OC 2601 0»P64 PHOTONUCLEAR DATA SHEET 30

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Ret. C.S. Young,- D.J. Donahue

Phys. Rev. 1^2, 172^ ( 1963 )

Method 200 kW pool reactor; monoergic y's from (n,7)in Ti, Mn, Fe and Cu;

Nal

Elem. Sym.

Pb

Ref. No. 63 Yo 1

82

JHH

Reaction E or ±E a d E J * Notes

(y>y) 5. 0-8.

2

7.285 - 7.285 D.lsr ^ev

O

Measure a (elastic scattering) values

in Table II; interpolated to 7 MeV in

Table V.

7.285 MeV angular distribution fits

W(0) = 1+(0.9^±0.1) cos2e [ see figure

5].

1

i Table II. Total elastic scattering cross sections (mb).

Source rlement

Energy

interval (MeV)

Source energy (MeV) Ta(IJ)

Target

(thickness

in cm)

Hg(3) Pb(0.6) Bitl J)

Tl yo-j.o 6.41 6.75

0.6 ± 0.4 Mn 6JJ-7J 7.26

7.15

7.05

<0J 0_5 ±0.3 0.9 ± 0.5 0.8 ±0.4

Ft 4.0-7.

6

7.64

7.28

0.7 ±0.4 2.4 ±1.3 125 ±20* 2.0 ±1.1

Cu 7.6-8.2 7.91. <0.2 <0.4 <0.2 «£2

• Calculated using the intensity of 7.64- MeV 7 rays produced by neutron

'.suture in iron.

1 - - - J

Table V. Cross sections at about 7 MeV (mb).

This work Ref. 2 Ref. 1* Ref. 3 Ref. 4

b Ta <0.3 2 Hg 0.5±0.3 3.5 Pb 0.9±0.S 15 17 60 55

Bi 0.8±0.4 17.5 19 35 17

• See also E. G. Fuller and Evans Hayward. Phys. Rev. Letters 1. 465

(1958).

11 Differential cross sections at 135* were multiplied by 11.3.

1 E. d. Fuller and Evans Hayward, Phy». Rev. 101, 692 (1956)

;

NucL Phys. 33, 431 (1962).

* EL Riebal and A. K. Mann, Phys. Rev. 118, 701 (I960).

1 Tsutomu Tohei, Masumi Sugawara, Shigeki Mori, and

Motohara Kimara, J. Phys. Soc. Japan 16, 1657 (1961).

4 P. Axel, K. Min, N. Stein, and D. C. Sutton, Phys. Rev.

Letters 10, 299 (1963). - ^ -. fOSM MBS-418

(S-»-S3» USCOMM-OC 183S6-PSJ PHOTONUCLEAR DATA SHEET 31

u.s. department of commerce

NATIONAL. BUREAU OF STANDARDS
REF. F.R. ALlum, T.W. Quirk, B.M. Spicer

Aust. J. Phys. J/7, 420 (1964)

METHOD

Synchrotron; r- chamber

ELEM. SYM. A

Pb 32

REF. NO. 64 A1 4 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TV pc- RANGE TYPE RANGE G,N N0X THR- 18 C 18 SCI -I 4- DST

(17.5) (4.5- )

>«)

| i. i

•

\ '''1 v * \

W

Fig. 1.—Fast phoior.cui.rGr.

(a) Bismuth, 1(0, —

(b) load, 1(0) = -i -;0 — u 1 .

A-Sr /»

3-3 1-

:os“ us“

V, angular distributions from bismuth and lead. cos 0 — 2-52 coa-0 ,bot;cd line); ''a 0 — 1-71 coa-0 (doited line).

No asymmetry about 90 .

FORM NBS-418

(REV. 7-1 4* 64) U 3 C OMM.QC 28010-P9 * PHOTONUCLEAR DATA SHEET 32

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. ELEM. STM. A F.R. Allum, T.W. Quirk, and B.M.

Nucl. Phys. 53, 545 (1964)

METHOO

Spice r Pb 32

REF. NO.

64 A1 5 JOC

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

angle

TYPE RANGE TYPE RANGE

G,XN N0X THR-34 C 34 THR- I 6- DST

Table 1 Summary of present experimental data at 34 MeV bremsstrahlung

Element _ A

a* a.

.Be 0.43 ±0.02 0.05 i0.0! •c 0.61 ±0.04 o.o9 ±o.o: i»Al 0.39 ±0.03 0.05x0.01 »Ti 0.34±0.02 0.06 ±0.01 **Cr 34 MeV 0.33 ±0.02. 0.02x0.0: 22 MeV 0.1 3 ±0.07 -0.02 xo.o; „Cu 0.36±0.02 O.IOiO.O: i*Sn 0.38 ±0.02 O.lixO.o; M Ba 0.39 ±0.03 o.u ±o.o: t»Ta Before installation of iron shielding 0.26 ±0.04 o.i3x0o:

After installation of iron shielding 0.27±0.02 o.i 2 x0.o: nPb target diameter 3.0 cm 0.39±0.03 0.15x0.01

target diameter 1.5 cm 0.40 ±0.03 0.19x0.01 nBi 0.42±0.03 0.17x0.01

Y - cos 0-t-a( cos'

0

form MBS*418

IR (V. 7-1 4-841 U1C3MU.OC 2S010-RS4 PHOTONUCLEAR DATA SHEET 33

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
REF

‘ b. Arad (Huebschoann) , G. Ben-David (Davis), I. Peiah,

Y. Schlesinger

Phys. Rev. 133 . B684-700 ( 1964)

ELEM. SYM.

Pb

A

CO tv

METHOD

Reactor, (n,y) reactions source

REF. NQ. 64 Ar L NVB

reaction RESULT

EXCITATION ENERGY

SOURCE OETECTOR

angle

TYPE RANGE TYPE range

G ,G ABX 7,7 D 7,7 NA1-D 135

(6.98, 7.32) (6.98, 7.32)

Table II. Capture gamma-ray sources and their properties. 4

Source

Chemical

composition Mass

Principal y rays (in McV)

A1

ClCo

CrCu

FeHg

Mn

Ni

TiVY

Metal

polwinvl Chloride cob

Metallic powder

Metal

Metallic powder

Hg-(NOi)j-2HjO

MnOj

Metal

TiOi V;0,

YjOj

1.640

<1.580 .0.230

o.-iso 1.560 0.440

0.310 0.240

0.600

0.2JO

0.120

0.200

7.73

S.55, 7.7S, 7.41, 6.96, 6.<M, 6.12, S.72

7 49, 7.20, 6.9S, 6.87, 6.6S, 6.48, 5.97, 5.67

9 72, 8.S8, 8.49, 7.93, 7.09; 6.65, 5.60

7.91, 7.63, 7.29, 7.14, 7.00, 6.63

9.30, 7.64, 7.28, 6.03

6.44, 6.31, 5.99, 5.67, 5.44

7.26, 7.15, 7.04, 6.96, 6.79, 6.10, 5.76

9.00, 8.50, 8.10, 7.83, 7.58, 6.84, 6.64

6.75, 6.56, 6.42

7.30, 7.16, 6.86, 6.31, 6.46, 5.87, 3.73

6.07, 5.63

- * more detailed information, additional lines* intensities, etc.., see Ref. 6.

Table III. Effective cross sections.

y source Energy (MeV) Element Protons

Scatterer Neutrons

(tfrr) (mb) Notes Hg 5.44 Hg SO 116, 118, 119, 120, 121, 122, 124 128 Cl 6.12 Pr‘« 50 S2 103 a V 6.508 Sn 50 62, 64-70, 72 14 Co 6.690 Pr>« 59 S2 2.7 a Co 6.867 Nd oO 82, 83, 84, 85, 86, 88 22 A1 6.98 Pb3* 52 126 2900 b Cl 6.98 Pb 52 124, 125, 126 346 a Ti 6.996 Bi3* S3 126 1560 b Cu 7.01 Sn 50 62, 64-70, 72 1000 b

Ti 7.149 Pb3* 52 126 1000 b Co 7,201 I’bP« SJ UO 25 Mn 7.261 Pb3* . > 126 25 a Fe 7.285 Pb3* * 2 126 4100 a V 7.305 Pb3* •> 2 126 12.5 Hg 7.32 Pb \2 124, 125, 126 5500 c Fe 7.639 Ni J V 30, 32, 34, 36 10.5 d

Fe 7.639 Pr‘“ :<

> 52 10 d Cr 8.499 Cu l't 34, 36 24.4 Cr 8.881 Pr‘« 5‘) S2 9.3 Ni 8.997 Sm (>2 S2, 85-88, 90, 92 2.8

0 A large error could be introduced in the cross-scctiwn Groshev ei.of. (Ref. 6).

* Because of the low counting rate, thick scatterers were < — • nuclear cross section.

* The cross section was evaluated assuming the ga :r.r * * Reference 6 gives the 7.639 line of iron capture g.»:r. 2031 (1962)] reports two different lines of equal irucn-.: - * difference of 14 IceV. therefore, there is no possibility <*:

a . -«• large differences in line intensities quoted by Bartholomew and Higgs and by

. *.!! introduce a s y- ter.iatic error in estimating (*yy) for resonances having a high

.• w :»:iotons per ;oo captured neutrons (see text).

. ..:.e. However, u recent paper by Fiebiger. ivand. and Segel CPhys. Rev. 125.

. . - ot 7.04 7 and 7.o3.> MeV. The present experiment cannot resolve an energy

...c .» responsible for the scattering.

B U.S. DEPARTMENT OF COMMERCE

FORM NB5»4lO NATIONAL BUR E AU OF ST ANOAROS

(REV. 7.14.641 U9C OMM*DC 26010-P64 PH0T0HUCLEAR DATA SHEET 34
REF. M.M. Dorosh, A.M. Pariag, V.A. Sh&oda- U1 ' Yanov, L.A.

Zhur. Eksp. i Teoret. Fiz. ^6, 1540-44 (1964)

Soviet Phys. JETP 1042-44 (1964)

METHOD

Shabalina

EL EM. SYM. A Z

Pb

REF. NO.

82

Betatron; ion chamber monitor 64 Do 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N ABX 3 - 20 C 8-20 BF3-I 4PI

FIG. 1. Cross section of (y, n) reaction in lead and photo- neutron yield curves from an infinitely thick lead sample

under the action of electrons. The ordinates on the left show

the cross section of the (y, n) reaction in bams, and on the

right the absolute yield of neutrons in neutron/electron units; curve 2 shows the cross section of the (y, n) reaction in lead, obtained in the present paper and calculated from the yield curve of Fig. 2.

FORM MBS-All IMV. M4-WI

USCOMM-OC 24 010- PA

4

PH0T0NUCLEAR DATA SHEET 35

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF at ANDAROS
M. Giannini, P. Oliva, D. Prosperi and S. Nuovo Cimenco JI 4, 1H6 (1964)

METHOD

Sciuti

ELEM. S YM.

Pb 82

REF. NO. Reactor; Fe(n,y), Al(n,y) 64 Gi 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

G.G N0X 7,8 D 7,8 NAI-D 135

(6.98, 7.28) (6.98, 7.28)

WIDTH

Table I.

Source*

scatterer Energy;

; (MeV) ; <<r,.(300)> (Bam)

<4.(300) (Bam)

<<W 100)>

<<x,,(300)> r-r.tr rro («V) 3 (eV)

»»Fe-*»*pb

j ;

! 7o 28 !

i ; 5.62 ±0.15 17.5±1.5 1.004±0.006 0.84 ±0.08 0.73 ±0.05 4.8 ±0.3

•rjVMiXi 7.64 0.375 ±0.006 ^ 0 0.838±0.011 0.71 ±0.07 0.15 ±0.02 11.0±0.5 wpe.iuocd

J 7.64 0.287± 0.006 4.1 ±1.8 1.116±0.015 0.11 ±0.06 0.22 ±0.02 <1

j 6.9S 1.29 ±0.06 22.1 ±2.7 1.002±0.012 0.:i0±0.07 0.86 ±0.10 11.5 ±2.5

Cross sections based on assumed 1 + Cos 0 distribution.

form NB$=418

(RCV. 7® 1 4» 941 USCOMM.OC 26010-P64 PHOTONUCLEAR DATA SHEET 36

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF' Yu.Ya. Glazunov, M.V. Savin, I.N. Safina, E.F.

Yu. A. Khokhlov

Zhur. Eksp. i Teoret. Fiz. ^6, 1906-08 (1964)

Soviet Phys. JETP 12, 1284 (1964)

METHOD

Fomushkin

,

EL £M. SYM. A

Pb

REF. NO.

82

Linac 64 G1 1 NVB

REACTION • RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N SPC 16 D 16 TdF-D 0-5 90

mt>. «rb. units

Photoneutron energy distributions.

shown in the figure. The solid curves a. b, and c are the evaporation spectra

.V (£)--£- exp (--£-)

with the temperature T = 0.48 ± 0.03 MeV for

platinum, 0.84 ± 0.04 MeV for Bi, and 0.98 ± 0.04

MeV for lead.

The solid curve d is the sum of the evaporation

spectrum and the fission spectrum of uranium:

.V (£) = X y

exp : - y-) - (t — x) exp

x exp | — sinh

y no,r, \ h

1 V ojt

with the parameters: T = 0.33 ± 0.03 MeV,

Tf = 1.05 ± 0.04 MeV, w = 0.5 MeV, a = 0.49

± 0 . 01 .

V

o

hm NBS-41S

(REV. 7.14.64I USCOMMOC 26010-P64 PHOTONUCLEAR DATA SHEET 37

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STA-^AROS
M. Giannini, P. Oliva, D. Prosperi and S. Sciuti

Nuclear Phys. 6jj, 344 (1965)

METHOD

[Page 1 of 2]

tu tM. S r M.

Pb

REF. NO. 65 Gi 1

32

EGF

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G.G LFT 5 - 8 D 5 = 8 NAI-D 3 - 8 135

Source n capture y' s from Fe and A1 changed temperature from 150-400°K„

< d rs > J

/(E)d

rs (E)dE

o

-

0 ra I

r

/

/(E) «*,-dE

o

03

J* /(E) ^ rs (E)dE

o

/(E) source spectrum

form NBS-418

(REV. 7° 1 4»64l U9C OMM«OC 26010.P64 PHOTONUCLEAR DATA SHEET 38

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS
REF. M. Giannini, P. Oliva, D. Prosper! and S. Sciuti

Nuclear Phys. 6£, 344 (1965)

EL EM. svm.

Pb 32

METHOD

[Page 2 of 2]

REF. NO.

65 Gi 1 EGF

REACTION RESULT

EXCITATION ENERGY

SOURCE OETECTOR

Fig. 6. Fe-Pb resonance. Calculated variation in resonant scattering cross section as a function of

scatterer temperature, for different values of d.

ANGLE

Tabu I Experimental results

Source

scatterer Energy

(MeV)

«r„(300)>

(b)

<t„(300)

(b) AeV) <HeV) Fe**’-Pb*" 7.2* 5.62 ±0.15 1 7.5 ±1.5 1.2 ±0.2 0.86±0.06 5.0±0.5

Fe*’-Ni'"» 7.64 0.375±0.006 4.4± 2.6 3.0 ±1.5 0.63 ±0.17 12.5±0.5

Fe*’-Cdm*> 7.64 0.287 ±0.006 4.1 ± 1.8 1.6 ±0.5 0.22±0.05

Al“-Pb*“ 6.98 1.29 ±0.06 22.1 ±2.7 — 3.5 0.95 ±0.10 10 ±1

u.s. department of commerce

* NATIONAL BUREAU OF STANDARDS

[ In columms 3 and 4, <<rn

(7'

( )> and <<rr> (r,)> are cross sections measured at temperature 7",(°K). 39
REF. I. Bergqvist, B. Lundberg. L. Nilsson, and N. Starfelt

Phys. Letters _12, 670 (19o6)

ELEM. SYM.

Pb

A 4

82

METHOD

Van de Graaff

REF. NO. 66 Be 1 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

N,G SPC 14 D 7 NAI-D 8-18

Fig. 1. Gamma-ray spectra emitt.ri • .• calculated for the decay of a compound ma-ray spectrometer for 16.0 MeV y ra.

:;.n> of 7.4 MeV neutrons. The dashed line is the spectrum

••-.a i he dot-dashed line is the response function of the gams.aiC.i—particle states as determined from (d,p) reactions are shown.

form NB$~418

(REV. 7*1 4-04) use OMM-OC 280I0-P94 PHOTONUCLEAR DATA SHEET 40

U.S. DEPARTMENT OF COMMERCE

NATIONAU BUREAU OF STANOARO?
REF. N. De Botton, J. Miller, C. Schuhl, G. Tamas and C. Nucl. Phys. 21 , 396 (1966)

METHOO

Tzara

ELEM. SYM.

Pb 32

REF. NO.

Photon Monochromator 66 De 1 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

G.G RLX 12 - 17 12_~. 1Z. KAl-

. P . DSI

Fig. I. Sections efficaces de diffusion dipolaire vers I'jvant. Rteultats diduits de raies de Lorentz:

I ) maximum a 13.3 MeV, 2) maximum a 14 MeV, 3) rcsultat experimental. - courbe en traits mixtes:

diduite de 1'absorption mesuree - cercles pleins et vidcs: points deduits des rteultats experimentaux

de diffusion, relatifs au Pb et 8i respectivemenL

Tableau l Donate experimental

Z-, dai dll (/<b-sr > (MeV) Pb Bi

6 = 90’ 135° 90° 135°

12 305*20 348 ±25 246— 1

5

252*15

13.33 570*20 690*30 5 50 a: 20 692*30

14.67 602 ±20 910±25 635±20 925*30

16.00 407*20 648 ±30 369-20 540*30

17.17 270 ±15 412±20 215*15 412*15

Tableau 2 Section efficace et lerme d' interference a 8 =» 0 £ X — V-rff, 1 (mbi i (mb)

(MeV) Pb Bi Pb Bi

12.00 0.61*0.04 0.49 * 0 03 0.15 ±0.05 0.17*0.03

13.33 1.14*0.04 1.10*004 0.26 *0.05 0.19*0.05

14.67 1.20*0.04 1.27 r 0 04 -0.008 *0.04 0.04*0.05

16.00 0.81*0.04 0.74 *0 04 -0.054*0.05 0.02*0.04

17.17 0.54*0.04 0.43 r 0 0) -0.010*0.035 0.12*0.03 41

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF ST ANOAROS
REF. H. M. Gersten'oerg and E. G. Fuller

NBS Tech. Note 416,' June 1967

METHOO

ELEM. SYM.

Pb 82

REF. NO. 67 Ge 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ancle TYPE RANGE TYPE RANGE

G,N ABY THR- 27 C 22.27 BF3-I 4PI

T«bl« 7. Comparison of neutron yield*. Yield* *re given In unit* of (neutron ca^/fceV nucleus) xlO' aa . The eatlaated uncertainties In Y and Y

fi are of the order of 6% and 10%, respectively.

Kleaant *(*.> UCRL Sac lay Va. NBS(Old) UCRL Sac lay Va. MBS(Old) Ref. Exp Exp Exp Exp

Y

c V*

Pb 27 103 86 0.83 26,30

22 111 92 116 0.83 1.05

Au 27 89 97 1.09 24,30,

22 92 98 88 115 1.07 0.96 1.25 38

Ta 27 81 82 77 1.01 0.95 27,30,

22 85 79 80 U3 0.93 0.94 1.33 38

Ho 27 67 75 1.12 27,31,

22 69 77 82 103 1.12 1.19 1.49 39

A* 27 36

“

22 34.8

Cu 27 14.4 13.2 0.92 28,30

22 12.6 11.5 12.4 0.91 0.98

Co 27 12.7 12.1 0.95 29,34

22 10.6 9.9 13.5 0.94 1.27

Ca 27 1.69 1.13 1.01 0.67 0.60 32,35

P 27 2.35 1.76 0.75 36

A« 27 1.92 1.62 1.38 0.84 0.72 25,37

0»« 27 0.54 0.42 0.48 0.42 0.78 0.89 16,32, 37 c 27

i 0.50 0.35 0.33 0.46 0.70 0.66 25,32,

-22

form N8S-418 miV. 7*1 4*44) U3COMM.OC 2601 0*P64 PHOTONUCLEAR DATA SHEET 42

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU O F STANOAROS
Fig. 31* Abaolut* ntutron yield «• • function of atoalc nuabar. Th« nautron yield froa calclun

(Z = 20) la particularly low in coaparlaon with the other eleaanta becauae Ita (y,n) threahold

la high coapared to the aean energy of the giant reaonance.

43
CLEM. SYM.

Pb 22

REF. NO. 67 Hu 2 EGF

REF. S„ M. Hussain and K* G. McNeill

Can. J. Phys. 2851 (1967)

METHOD

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N ABY THR-22 C 22 THR 4- DST

YIELD AT Eo > 22 M«V

*» ln, f

) ACTIVATION BY PHOTONEUTRONS

! fast photoneutrons from various elements as measured in the present

1 j

an** Baker. The present results have been normalized to Baker's measurements for

SOOOr 9 PRESENT WORK

• BAKER (l««0)

h

o 1000 o

soo

• •

Zt

An

•C4

c

e ®Z»

100

«NI

10 30 SO 70 90

ANISOTROPY COEFFICIENT -0. a

Fig. 2. The anisotropy coefficients a,, in the formula W(8) - a0(l + at P, a,P3 ), obtained in the present work, and those obtained by other workers in the same part of the

Periodic Table.

TABLE I

Element os* Ol

Nickel 77 (1 ,0±0.05) 0. 14±0.04 —0.34 ±0.06

236(1. 0±0. 04) 0.06±0.03 —0.30±0.04

Selenium 525 (1 .OdbO.Oo) 0. 10±0.04 —0.25±0.05

Zirconium 380(1. 0±0. 05) 0.03±0.04 —0.27±0.05

Niobium 392 (1 .0±0.03) 0.0t±0.02 —0.30±0.03 Molybdenum 410(1. 0±0. 03) 0.05±0 03 —0.41±0.04 Cadmium 755 (1 ,0 ±0.02) o.o5±o.oi —0.28±0.02

Tin 955 (1 .0±0.02) 0.03±0.02 —0.30±0.02

Lead 2274 (1 .0±9.02) 0.06±0.02 —0.48±0.02

that obtained by Baker and McNeill (1001) and la the yield per mole per 100 roentcen. AO other

values of a. have also been quoted with the same normalisation.

foam NBS-418

(REV. 7-14.44) U1COMM.OC 24010-P44 PHOTOHUCLEAR DATA SHEET 44

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS
nr.

A. V. Mitrofanova, Yu. N. Ranyuk, and P. V.

J. Nucl . Phys. (USSR) 6, 703 (1967)

Sov. J. Nucl. Phys. 6, 512 (1968)

METHOO

Sorokin

ELEM. SYM. A ! Z

Pb

REF. NO.

82

67 Mi 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,F ABX 300-999 300-999 FRG-I DST

Angular distribution measured for Pb was found isotropic;

for other elements it was assumed isotropic.

999 =1600 MEV

III leu* .viuuLiliility D

Cross j| Nuset lion it., *ai3

|j cleu*

Fissuinuliilily 1) Cross

lection <r,. nfi

Bi i

*

'. i ~o.ni 7.8-*-0.6 Os 0.00'.8~ 0.0005 0.37 x0.04 Pb ii.i .'11 — 0.004 • 3. 4x0.

3

Ro o.uv.«i-fc0.fMVw; 0.35±0.04

T1 .It -0.003 2. 1x0.

2

To (».0045x‘MX)05 0.27x0.03

Au 0.019x0.002 1.25±0.t0 Ilf O.u042 x0.0004 0 . X. 0 a 03

Pi 0.ui2±0.Q02 0.80±0.08

£*G*V

Fig. 2. Photofis»ion fragment yield* a* a function of Z*IA. The

ordinates are values of <r« in units of cm1

. rom* MBS-4H

IMV. 7-14-MI UICOUM-OC 2S010-PS4 PHOTONUCLEAR DATA SHEET 45

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OP STANDARDS
REF- Yu. N. Ranyuk and P. V. Sorokin

J. Nucl. Fhys. (USSR) j>. 37 (1967)

Sov. J. Nucl. Phys. j>, 26 (1967)

EL EM. SYM.

Pb

A z

• 32

METHOO REF. NO.

67 Ra 2 HMG

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,F ABX THR-260 C 100-260 EMUI

DST

Tabic II

MeV

Cross section per equivalent y quantum, 10'" cm*

Bl Pb AU Pt

100 0.07+0.005 0.017+0.002 0.003+0.0005 0.0012+0.0002

120 0.15+0.01 0.032+0.003 0.014+0.001 0.0035+0.0003

140 0.20+0.01 0.054+0.004 0.020+0.001 0.0053+0.0006

150 • 0.61+0.12 — — —

160 0.31+0.01 0.096+0.005 0.037+0.001 0.012+0.0005

180 0.46+0.02 0.13+0.01 0.055+0.001 0.015+0.001

180* 0.68+0,09 — — * —

200 0.62+0.02 0.20+0.01 0.082+0.002 0.031+0.001 200* 1.3 ±0.24 — 0.31+0.09 —

200 •• 0.7 — — —

220 0.83+0,03 0.28+0.01 0.108+0.003 0.039+0.001

240 1.22+0.03 0.36+0.01 0.146+0.003 0.063+0.001

240 •• 1.5 _

250* 1.78+0.22 — 0.33 +0.07 —

260 1.50±0,04 0.50+0.02 0.180+0.004 0.085+0.002

•From ®. ••From"'.

Fig. 2. Angular distributions of fragments (in relative units) from the fission of lead induced by y rays.

Fig. 3. Pbotofisskm cross sections. O-Bi, •-Pb, A—Au, A—

ft, The,ewes were calculated from amootbed yield curves.

FORM NBS-41S

ISCV. 7>1 4.04) USC OMM.OC 2601 0.PS4 PH0T0NUCLEAR DATA SHEET 46

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUR EAU OF ST ANOAROS
REF. J. W. Jury, J. S. Hewitt, and K. G. McNeill

Can. J. Phys. ^6, 1823 (1968)

EL EM. SYM.

Pb 32

METHOD REF. NO.

68 Ju 1 EGF

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

g,n NOX THR-22 C 22 THR 5- DST

W(0) - a

Q + a^ + a

2

P

2 TABLE I

Target ciemcnr Z Energy ao' ^1/^0 az j0 Vanadium 23 32 640 + 50 o. n-o. io -0.09-0. 1

1

Chromium ^ 4 in 365 r 39 0.02-0.08 0.C0-0. 10 Manganese 25 n 450 r 33 0.07 + 0.05 -o. i : - 0.06 Bromine 35 27 874-54 0.05 + 0.06 -o. : 5 — o.ojs Molvbdcnum 42 610r 60 0.09-0.05 -0.35- 0.06 Ruthenium 44 27 UGOr 25 0. 12-0.02 -0.29-0.03

Rhodium 45 27 1270-47 0.06-0.03 -0. 14-0.03

Palladium 46 27 1350r 29 0.26-0.02 -0. 12-0.02

Antimony 51 27 2140 r 62 0.04-0.08 -0.25-0.1!

Lanthanum 57 27 1940-4 70 0.12-0.10 -0.52-0. 14 Praseodymium 59 30 1800-58 0.20 + 0.08 -0.40 + 0.09

Platinum 78 27 2600 + 52 0.17-0.02 -0. 15 + 0.03 Lead 82 22 2274 + 59 0. 08 r 0.08 -0.46r0.09

•The yield per mole per 100 r was normalized to a yield of 2274 for the lead >amp»e at the same energy.

form MBS-41S

IRCV. 7-1 4-041 USCOMM-OC 2«010-Pf4 PHOTONUCLEAR DATA SHEET 47

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
REF" N. N. Kaushal, E. J. Winhold, P. F. Yergin, H. A. Medicus and

R. H. Augustson

Phys. Rev. 175 . '1330 ( 1968 )

EL EM. SYM.

Pb 82

METHOO REF. NO.

Page 1 of 2] 68 Ka 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N AfiX 50-85 C 55,85 T0F-D 10-35 67

(67.5)

NEUT ENGY SPEC

* *

*|Hi

1 N • :

.

•

a

1

Tn

"•is A .

«

L • | *L «•

'* %

%

,

** >

Tl I

i

a., i 1 Co

!!)*

m

• *»•.

Zs

%

0

1 A S® ® ,* * ,. * Vi,.

U

1 ‘-U- S

i

NEUTRON ENEMY, MM

Fro. 6i Observed neutron spectra doe to 55-&£MeV difference photon spectra. The effective croee sections have been divided by

Fig. 7. Effective cross sections for production of fast neutrons with energies greater than 10 MeV (solid circles) and 30 NleV

(open circles) by the 55-85-MeV photon difference spectrum. The

dashed curves are modified quasideuteron model predictions as discussed in the text.

TabLX I. Comparison of pcsaent cross-section values in mb

for production of nigh-energy photoneutrons by 55-85-MeV photons with measured cross sections also in mb, for total photoneutron production. The present cross-section values are uncertain by 8 to 10% because of counting statistics and normalisation errors; in addition all values depend on an absolute normalisation in terms of the deuteron photodisintegration cross section, which is known to about 10% at these energies.

Target

4»(dr/<M«I (£.>10 MeV)

[Present experiment] '

f(t,Th) Tones and

Terwilliger* Cotta d «J> Other

results

Li 0.75 1.0 Be 1.0 2.7 2.3 2Jt* B 1.0 1.4 C 1.5 U 1.4 2.4* O U 1.6 AI 2.8 5.5 4.6 8* S 2.1 4.4 6J*

Fe 4.2 16 12 Cu 4.3 20 19 Zn 4.4 15 In 7.4 Sn 7.0 Ta 10.7 95 Tl 10.7 Fb 8.3 100 Bi 13 U 16 65

» Average croaa aectiona between 55 and 85 MeV, a* read from Figi- A "1>/ii«-/i,W£/S0. aa taken from Fie. 4 of Ref. 5 and Table I of

^S?"Coata. L. Paaqualini. G. Pirasino. and L. Roaaio. Nuovo Clmenfo

42. 306 (1966).

a G. Blahop. S. Coata. S. Ferronl. R. Malvano. and G. Rlceo. Nuovo

Clmento 42. 148 (1966).

form MBS-418

(REV. 7-1 4-04) USCOMM-OC 2601 0-P64 PH0T0NUCLEAR DATA SHEET 48

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
n€W' N. N. Kaushal, E. J. Winhold, P. F. Yergin, H. A. Medicus and

R. H. Augustson

Phys. Rev. 17£, 1330 (1968)

EL EM. SYM.

Pb 32

METHOD

[Page 2 of 2]

REF. NO. 68 Ka 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE TYPE MANGE TYPE RANGE

Fk. 5. Neutron energy spectra for beryllium and lead due to

i.L ud 85-MeV bremsstrahlung, together with the corresponding

ifntnct oeutraa gjectra. Error bars indicate statistical errors

Fio. 8. Neutron energy spectra for beryllium, aluminum, and

lead. The dashed curves are Dedridc’s quasideutcron model calculations of the primary neutron spectra, arbitrarily multiplied by

1.15. For aluminum and lead these have been modified by esti- mates of the effects of secondary interactions on the outgoing

neutrons, as discussed in the text, to produce the solid curves.

rouM MBS-4H

(RCV. 7-I4-S4I USCOMM-OC 2S010-PS4 PHOTONUCLEAR DATA SHEET 49

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARD*
K. Go McNeill, J. S. Hewitt, and J.

Can. J. Phys. 46 , 1974 (1968)

METHOO

W, Jury

EL EM. SYM. A

Pb

REF. NO.

32

68 Me 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN NOX THR-32 C 22-32 THR-I 5- DST

ENERGY (E,max) in MeV —

Fio. 1. The variation of anisotropy. of fast photoneutrons from lead with maximum X-ray energy: O. present work; O. Hussain and McNeill (1967); O, Baker and McNeill (1961); x , Allum et al. (1964); . Mutchier(1965).

FORM NBS-418 (MV. 7-1 4-04) U9C OMM*OC 2601 0* P64 PHOTONUCLEAR DATA SHEET 50U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. T. Tomimasu

J. Phys. Soc. Japan 2^, 655 ( I9c3)

EL EM. SYM.

Pb 82

METMOO REF. NO.

63 To 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN ABX 10-24 C 10-24 BF3-I 4PI

MONITOR CALIBRAT ION

S

Tabic II. Parameters of the photoneutron cross lections for natural Cu and Pb. *1116 contribution of

the O'. P) cross section for Cu was considered. Km I (MeV)

| r

Z/Z.

9-1 *—2

• (mb) (MeV) (MeV-mb) (mb, MeV) 0.00223 AV*

Cu

Pb

1 17.2:10.3

| 14.1 ±0.3 ]

78±8

660 ±60

8.0±0.5

5.0±0.2

587±90

3910±590

0.62 ±0.1

1.32 ±0.2

1.81 ±0.24

18.6±2.4

0.73 ±0.11

(0.93x0.14*) 1.13±0.17

Fig. 13. Comparison of photoneutron cross sections

for natural Pb.

form HBS-418 (MV. 7-1 4- *4) USCOMM.OC 28010-P84 PHOTOHUCLEAR DATA SHEET 51

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. R. Garfagnlnl, G. Plraglno & A. Zanini

Attl Accado Naz. Lincei, Rend.

Cl. Scl. FIs. Mat. Natur. 47, 33 (1969)

ELEM. SYM.

Pb

A z

82

methoo REF. NO.

69 Ga 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN SPC 8-85 c 85 CCH-D 135

! 200 -

i— 1 1—

E„ » 30 M*V

3^ 100|- •

• •

-I JL \400- 10 < E„ < 30 HeV

|§20oL

-1 I L.

c

sT

Qt<3

C£<

-I I L. T 1 I T

8 « E„ < 12 M*V

MI“t

-I 1 1 I 1 4 < E„ < 8 M*V

it

1

(

_L_ * 2 < E„ < 4MeV

• .8 < E« < 2MeV

I

1

* 11 J

10 20 30 40 50 60 70 80

Hi*'. 2. Number of photoneutrons emitted at 135® normalized to the sum

rule factor NX A. as a function of Z. In the upper part is reported the effective cross section divided by NZ/A for photoproduction of fast neutrons hv 55 K; MeV bremsstrahlung photons as deduced by Kaushai et al. [i].

Fig. 1 . - Percentage of the phntoncutrons emitted at 133®. in tlv r> -;x-. tn.- energy ]_ —

interval as a function of Z. by a y- ray bremsstrahlung l» am nth KY m»« _ N.N. Kaushai et al. , Phys. Rev. 175 . noahps — 85 M>-V The open circles represent the values obtained at < 10° for 'l.i ami *H<- 1330 (1968). 52
RIF. H. Tsubota', N. Fujiwara, H. Ishimaru, E. Tanaka, T.

M. Kanazawa and N. Mutsuro

J. Phys. Soc. Japan 26, 1 (1969)

METHOO

Aizawa,

EL EM. SYM. A Z

Pb

REF. NO.

32

69 Ts 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N NOX 14-26 C 26 SCI- D 7- DST

(25.5)

Paper gives summary of angular distribution measurements.

Tabic I. A summary of the results. W(0) = A-r3sin: 0-i-C cos0

Target I E.u(VteV) A 3 C G/A C/A

Bi 7.4 0.65=0.02 o.35=o.:: 0.16=0.05 1 0.55=0.20 0.24=0.10

! 8.7 0.66=0.01 0.34=0.06 0.18=0.03 : 0.51=0.10 0.27=0.06

'

Pb 7.4 0.45=0.05 0.55=0.11 0.10=0.01 1.22=0.25 0.22=0.04

8.7 0.75=0.03 0.26=0.03 0.17=0.03 0.22=0.03 0.22=0.03 Ta 7.4 0.69=0.02 0.32=0.03 0.03=0.01 i 0.46=0.05 0.05=0.02

8.7 0.30=0.04 0.20=0.02 0.05=0.03 0.25=0.04 0.07=0.04

1.2

02:-

0* 30* 5G° SC’ !2C° . 5C°

I 2 —

C* 3C® 6C° 9C° 2C* ~5C° .££»

• EMISSION

fig. 5. i he angular d:str:b..:.urs o: :_s; photo- neutrons from Pb ir radiated v. . ... 25.5 MeV

brcmsstrahl...-.^.

(a) The neutron cetecting bias energy :s su: a: S

' MeV

(b) The neutron detecting bias energy is ^e: a: 7 4 MeV.

FORM M8S-41*

(REV. 7.I4.MI USCOMM-OC 26 0 7 0- P6 4 PHOTONUCLEAR DATA SHEET 53

U.S. DEPARTMENT OF COMMERCE

NATIONAU BUREAU OF STANOAROS
REF.

METHOD

I. Klnrura, S. A. Hayashi, K. Kobayashi, S. Yamamoto,

and T. Shibata

Ann. Repts Res. Reactor Inst. Kyoto Univ. 3, 75 (1970)

ELEM. SYM.

Pb 82

REP. NO.

70 Ki 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.XN SPC 7-18 C 15-18 T0F-D DST

Table 1. Neutron yield from lead, bismuth, iron, beryllium and uranium targets bombarded by electron beam

THICK TARGETS

Worker Target

Conversion factor

(neutrons, electron)

Electron Energy 'MeV)

Pb 5x 10 x lOfcm*)

1 Bi 5x 10 x 10(cm*)

9,5. 10- —18

1.05x10-* —18

. Present author* Fe 5x lOx 10(cm*) 9.3x 10-* -18

1 Be 8.9cm dia.x25cm 2.3x10-* —18

Pb SxlOxlOfcm*) 6.5x10** 14 Okabe et aL>» Pb (22.6g/cm* thick) 1.5x10- 13

Feld**' Pb (thick) 1.0 x 10- 16 Barber et aL*> Pb (22.89g/cm* thick) 7. Ox 10— 14

Coates et al.*' U 6cm dia. sphere 2.5 x 10— 45

Table 2. Nuclear temperature for lead obtained from photoneutron

spectrum measurement

Present authors

• 0.89

1.49

Gayther et aL** 0.98 Marco et aL”) 0.9

Glazunov et aL1 *'

I 0.98

MeV (2 MeV to 3.5 MeV)

MeV (4 MeV to 7 MeV)

MeV (1 MeV to 4 MeV)

MeV (2 MeV to 4 MeV)

MeV (0.2 MeV to 1.3 MeV)

1.035 MeV (1 MeV to 3.5 MeV) for Pb-208

Verbinski et aL'»> 1.41 MeV (>3.5 MeV) for Pb 208 0.92 MeV (1 MeV to 3.5 MeV) for Pb-206

^Coates, M. S. et al. , J. Nucl. Energy, 22 (1968) 547.

9Gayther, D.B. et al. , J. Nucl. Energy, 21 (1967) 733.

14

Glazunov, Yu. Ya. et al. , J. Exp. Theor. Phys. (USSR)

46 (1964) 1906.

15Verblnski, V.V. et al. , 0RNL-3714, l (1964) 20.

24

Okabe, S. et al. , Ann.Repts. Radiation Center of Osaka,

Pref. , Japan ,3 (1962) 65.

^Barber, W.C. et al. , Phys. Rev. 116 (1956) 1551.

27 DeMarco et al. , Nuovo Clmento, 44, l (1966) 172.

porm N3S-418

. (REV. 7-14-64) USCOMM-OC 26010.P64

i rf.-

\

. te*eMev \\ ’ > --t •I. ee»i65 ' Mev s, V,

£e*:5Mev * .

' - 2 3 «

" 5 6

’

' ‘a ^

Nieurron Energy (MeV)

Fig, 5. Energy spectra of photoneutrons from

a lead target bombarded by electron beams of three different energies.

(over)

PH0T0NUCLEAR DATA SHEET 54

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
s

U.M jkX>, Irm l>» I

I

"•

I

i

"<r 30- an- <*e .73- 'Su-

(Lao* Stt, 2a* ^-oiiwm)

<* i <-iS«vI*4Asmi

o- rr acr 90- '3D- -sn1 (I iit

•a

.« «

••'So*, < u

O* *,• fi,* •»/• ijr iv «.- MV •

,

I Lejo Srfw*. OemOom««*)

A

3 5 _

. — —

4 i -

^5* x>* «• it*

" -ao* ' - •*•••

I »no flci" i

3s

J

/•'3"V,-I«23o» j 0- JO- «J- SO* U* 30* >80-

4

fee^J-saem

n»r

— ’kM***

• <aiunii r.rr

* £7) #

—•***!•

n«. 4 Angular distribution of photoneutrons from land targets bombarded

by electrons uf about lit MeV. measured by the "Alin. p) n Mg. n .H

(n.«s) **Na and ,rSfn.p> "I* reaction*. The statistical error on each

point i* about 0.1 », and it is mvolvrd in these circles. The uncer

tainties of angles on each point are A* - ±0.05’ for 12.5 cm from the center of sources. A* «• ±066- for 9 5 cm and A* - ±I.T8* for 4.5cm.

55
hep- K. G. McNeill, J.^W. Jury, and J. S. Hewitt

Can. J. Phys. ^8,*950 (1970)

| ELEM. SYM.

Pb 82

MfTHOO RE P . NO.

70 Me 1 egf

EXCITATION ENERGY

SOURCE detector

REACTION RESULT

TVP£ range TYPE range

ANGLE

G.XN SPC 8-31 C 31 TOF-D 1-6 98

TABLE II Correlation between peaks in the crow section and the neutron spectrum for the reaction 2a

*I*b('r,n) ,#T

I ,b*

Excitation energy from Sticlay data. assuming ground

state transitions From neutron

spectra From Saclay data 7.2 MeV) (present work) via Fig. 2 (MeV) (MeV) (MeV)

2.0 1.9 2.0

2.2 2.3 2.6 2.5 2.7 2.6

2.9

3.2 3.1 3.2

3.5 3.4

3.3 3.7 4.0

4.3 4.4

"The error on the rsperimentally determined neutron cnerDr U in

ali cues between 70 and 100 kV. Ftc. 2. The photoneutron spectrum obtained by the

irradiation of lead by brcmsstrahlung of maximum energy 31 MeV, the High* path direction being at 'ji'

1 to the brcmsstrahlung beam. The line is merely to guide the eye.

foam NBS-418

iaev. 7 . 14. aei use OMM-OC 2601 0.P04 PHQTONUCLEAR DATA SHEET 56

u.s. department of commerce

NATIONAL BUREAUOF ST ANOAROS
REF. ELEM. SYM. A

METHOD

Yu. P

I. Yad.

. Antuf'ev, V. L. Agranovich, V. B. Ganenko, V. S. Kuz'menko,

I. Miroshnichenko , and P. V. Sorokin

Fiz. 13, 473 (1971); Sov. J. Nucl. Phys. 13, 265 (1971) Pb

REF. NO.

82

71 An 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE range TYPE range

G,P SPC 37-999 C 700.999 TEL-D 25-400 DST

G,D SPC 42-999 C 700,999 TEL-D 25-400 DST

999=1. 2 GEV. REL D/P

Table I. Values of the parameter r, MeV

J E, • 700 MeV E , • I200M«V

frsttR DvnUroos Prtxoits Deuicront

40* mr - »ar tar 1- terj cs- - - tv - «r ur u 46 a 34 30 27 28 24 n 21 20 45 a 27 24 Be a 43 34 30 XI. 28 26 24 22 19 45 28 27 24 C » u 31 30 26 34 33 29 23 19 so 48 33 37 34 22

Si 43 28 IT • 22 46 35 28 25 Cm 45 29 27 24 Ta 28 21 45 34 27 24 Ph SI 29 36 22

Yield of protons 30-400 MeV, deuterons 30-200 MeV.

The measured secondary-particle spectra for kinetic energies T > 80 MeV are weil described by

the expression

<To / dQdTQ * const f exp ( —7* / 1 ), which is identical to the formula for the evaporation process. C<1 In Table I we have given the values of the parameter r for the nuclei studied, at various angles.

The accuracy in determination of r is about 10%.

FIG. 4. The ratioi N^/Np

as a function of target-nucleus inau number A at an angle 9 - 60® for E, 1200 MeV. SoluJ curve-A* '*

form N3S-418

(R E V . 7-1 4-641 USC OMM- O C 26010-P64 PHOTONUCLEAR DATA SHEET 57

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOARDS
V. Enina, S. Lo Nigro and G, Milone

Lettere al Nuovo Cimento 2 , 117 (1971)

method

i

i Pb 82

RE*. NO. 71 Em 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,F ABY THR-999 C 300-999 FRAG-I 4PI

999 = 1000 MEV

Table I. - Fin* ion cionn-necUoim per photon between 30o and HiOO JleW

Our results Previous results

<Tk (mb) dk (mb) <rt (mb)

Bi 7.6 ± 0.2 7.9- 1.3 7.8 — i>.2 ( 3

) 7.8 — O.s ( 5

) Pb 3.3 i 0.1- 3.2 - 1.5 3.4 — 0.3 ( J

)

15 -

r

o

1— * , <•00 S00 8C0 1000 1200 (MeV)

1 : "" r ex|“ rmieiital of I lie (lie. loll—ion oro— -M-.'I 0.11*11. -r ei|iiivulent. ,|ii,tii|.iim*fi>r Hi jim) |-|,

. o"'|.."-. .1 mil, n -iill-. lOMieriiiienliil pomU: • iiiii- .lili n l,,l ,.l ,,^,,.1 of ||,.. ,, .„n.

oi.i.oiu .1 mil. I lull .Hill flunk lana-la; * ref. (•); u. u ref. d. Tlie ,lm.lie,| In,,,, 1 1„. i„.,|

. .Ilenl., 1,,1 ||> II,u le.inl-miimivM inetliiMl Ukiinf into uceuiiitl mu- n„ii|u only. I, In, n,.

J ' J OMAN ami n. «. JiTKlXHu: i‘hue. lire., 106, j sj (lo.'.T). COUTJXI. K. Di:l Giuuich. li. l\rn:s*.\ ..ud U. Uijkivilui: .V««r« C.W.ifo. ••l • tf 1 t Jlf t ), (•» \. V. Miin.aMN.iVA. Vir. X. 1IANVHK ami l*. V. Sum,kin: .w. Jo„r». .Y„W. /•/„».. 6. iU ilOO.M.

FORM NBS-418

<R E V. 7o| 4o«4» USC OMM-OC 20010-PS4 PHOTQNUCLEAR DATA SHEET 58

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
I. A. Grishaev, A. N. Krinitsyn, N. I. Lapin, V. I. G. D. Pugachev, and B.I. Shramenko

Yad. Fiz. 14, 35 (1971)

Sov. J. Nucl. Phys. 14. 20 (1972)

METHOD

Nikiforov,

ELEM. SYM. A

Pb 82

REF. NO.

71 Gr 2 hmg

reaction result EXCITATION ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

G.PI+ ABY 150-560 560 EMU-D DST

G , PI- ABY 150-560 560 EMU-D DST

PI-/PI+ YIELD RATIO

Croes section for photoproduction of i* and t* mesons for E, = 560 MeV —

lyciVwKdVsqipitH -» • — ».tr Deteef «tVT»

13 MeV OM Mi.

T - 40 MeV Ok Aiii m

T • 40 MeV T • Ml MeV

•* m- m* m* *•

c

AtOs

Kk

2t.t x&s mtit

rum

XUe IS lit 1

t l.4x VI

MJiJ

47S±4 Melt

ira»zi

St x 4 watts Wx-IM

56.4x21 t6*S4

r.2 r in a w»*r

:i>±2.i *'2z 35 V 5 t M

i:n- 19

2KS-2.6 S2±4 .7 ns tint JOitAS

111 f

a

°rH

;,f

1

a !

I

c

;H

1 Li Li *n

FIG J. w'lw* yield r»no u i function of

N/Z. e-d 60*. T » 40 MeV. b -d • I 20*. T- 40 MeV; c- d 120* f • 65 MeV

He"'*' fi r%n

FIG. I . Total yield of chaffed mwm u • function of atomic wctfhL The tobd straight line is t 1m e a penmental dependence, and the dashed

straight line is the A a) law. a-d • 60*. T 40 MeV ; b-d I 20*. Points: O-T - 40 MeV. A-T - 65 MeV.

tOSM N3S-418

(REV. 7-1 *.««> USC OMM.DC 29010-P64 PH0T0NUCLEAR DATA SHEET 59

U.S. OEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARCS
REF.

METHOD

J. Maly

Phys. Letters 35B . 148 (1971)

EL EM. STM.

Pb

REF. NO.

82

71 Ma 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,F SPC THR-999 D 500,999 FRG-I 4PI

999 = 1.3 GEV

Tablo X Estimated energies and cross-sections of fins ion fragmont formations produced by 1300 MeV electrons

(detected on (D) foils) Range in mylar

(i«*»> EaUmatod energy of fragment la MeV

A rn 25 A m 50 Am 75 Am 100 Cross section in fib (passing foil No.) Zrn 10 Z • 20 Z -30 Z rn 40 U Pb W

(O.foil) • 3*10* 6 x 10® 400 if HJ

«nX

79 185 294 391 1.7 2.2 4.1

67 jim

(S. foil) 89 222 362 484 1.8 1.0 1.2 79 fim

(6. foil) 105 260 422 676 3.6 1.2 1.8 Akin from Q values Klnetio energy from fission of: (MeV) 23.6 60.1 60.0 49.8 18&w

22.4 61.6 80.0 66.9 208^

49.2 92.0 111.0 111.3 238^

5Ub 92.6 192 302 433

S. . tar fusion witb: ltb 180*

(MeV) 99.7 203.5 315 442 208pb

107 209 334 462 238y

L°ver j FORM NBS-416

IRKV. 7-14.04) UICOMM-OC 20010- PO

4

PHOTONUCLEAR DATA SHEET 60

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Fir. 1. Penetration of fission fragments through mylar

foils from fission induced in U, Tb and W by slectrona and bremsstrahlung. Explanation of symbols:

Cf spontaneous fissionO; U fission front foils A and back foils A; Pb fission front foils and back foils Q;

W fission front foils O and back foils O . Symbols with arrows (o.g. O) denote background level.
REP. T. Methasiri and S. A. E„ Johansson

Nucl. Phys. AI67,* 97 (1971)

ELEM. SVM.

Pb

I z

82

method : REP. NO.

I 71 Me 1 egf

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

Type range TYPE RANGE

G,F ABY THR-900 c 300-900 FRG-I 4-PI

Table 1 The constant fission cross sections above the threshold

Element a, (cm1

) Element a, (cm1)

. Pb (5.0 ±0.2) x 10” 17 La (1.1 ±0.1) x 10"** Au (1.7±0.1) x 10 _1T Sn (4.3±l.l)xJ0-»* Ta (3.3 ±0.2) x 10* *• Ag (8.4±2.0)xl0- 1 * Yb (1.2 ±0.2) x 10_1 * Mo (1.7±0.4) x 10” 1 * Ho (5.5±0.3)x 10"** Cu (6.6±1.2)xl0” 1 » Gd (5.3—0.8)xl0*** Ni (5.8±0.1)x 10“* < Nd (l.3±0.2)xl0-*»

[over]

form NBS-418

IR EV. 7.1 4-041 USCOMM.OC 26010-P64 PH0T0NUCLEAR DATA SHEET 62

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAN OA R f
(e) <d)

If)

Fig. 1. Cross sections per equivalent quantum 0 (£) as a function of log S,

q

63
REF.

METHOD

H. J„ Von Eyss, H. Schier, and B. Schoch

Elba-71, Tagungsbericht Elektronen Beschleuniger Arbeits Gruppen

(Sept. 1971) Justus Liebig-Universitat Giessen, p. 391

ELEM. 5YM. A

Pb

REF. NO.

82

Page 1 of 2. 71 Vo 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,N ABX THR-266 C 150-266 TOF-D 90

Over for figure.

form N3S-418

(R EV. 7-1 4-64) USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 64

U-S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
5

-

10 H

5-i

10 °-

5 —1

-1 10 J

5-

o

0

o

ow

CD

1/1

O

S2

Xo

T3

cd UJ

T3a

Sleitarget 4,3X 0 dick (wassergekuhlt duller R u n 1 ) ^n =90°

° Run 7 Ee = 266 MeV

•' Run 5 Ee s 234 MeV

a Run 4 E e

s 20 2 MeV

Run 3 E e

= 182 MeV

Run 2 Ee=170 MeV

x Run 1 Eg = 1 50 MeV

\ \\\°o Y&>'«.•>

Quasideuteron- Mo dell

Ot sUO MeV/c

E b -*I0 MeV; E we u = 30 MeV

0*1=19,0

E e = 150 MeV

E e= 200 MeV

E e= 234 MeV

E e

s 266 MeV

—

r~ 20 40 60 80 100 120 HO MeV

F i qu r 2.: 0 i f f eren t i e 1 1 er Neutronenprodukti ons-Wi rkun/rsquerschni tt

der Runserie 1 als Funktion der Neu tronenenergi e fur

verschieaene Prinarelcktronenener«ien

65
REF

H. J. Von Eyas, H. Schler, and B. Schoch

Elba-71, Tagungsberlcht Elekcronen Beschleunlger Arbeita Gimppen

(Sept. 1971) Ju8Cus Lieblg-Unlversltat Giessen, p. 391

| EL EM. SYM. A

Pb

METHOD

I J ^

Page 2 of 2. E 0

= 2 34 M,-V

x-V 90°

Target- Pbl Targetlamelle (A, )

REF. NO.

71 Vff i

E n =20 MeV

30 MeV

40 MeV

Ficur 3 0i fferenti ell er ’Jeutronenprodukti ons-Wi rkungsquerschni t

' b als Funktion der Massenzahl A fiir einige .Jeutronenener82

hmg

gien 66

T OF COMMERCE

J OF ST ANOAROS
G. Anders son, I. Blomqvist, B.

I. Kroon, K. Llndgren and B. Nud. Phys. A197 . 44 (1972)

METM00

Porkman, G. G. Jons son, A. Jarund,

Schroder

Pb

REP. NO.

82

72 An 8 egf

reaction RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

G,F ABE 1- 7 C 1-7 ACT1

4PI

ENERGIES GEV

Table 3 Experimental mean photofission cross sections a, (mb) from refs. *• '*•») compared to the results of the present work

Present work

0.3-7.4 GeV

Ref. *•) 0.3-0.9 GeV

Ref. *‘) 0.3-1.0 GeV

Ref. •) 0.3-1. 6 GeV

Au 1.44=0.10- Va II- o 1.19±0.06 1.25 ±0.1 Pb 3.8 ±0.3 5.0 =0.2 3.3 ±0.1 3.4 ±0.3

(over)

row N8S-41S IMV. M4>44)

U3C OMM-N BS*OC PHOTONUCLEAR DATA SHEET 67

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Table 6

Partial reaction cross sections relative to the total photoabsorption cross section, a(axot (in %)

Reaction 0.3 GeV 1.0 GeV 5.0 GeV

1JC(y, n) 10 ± 5 6.8 ± 3.4 0 ± 5

I7Al(y,.'* +

) 0.2 ± 0.1 0.1 ± 0.1 0.04 ± 0.02

(y. 2pn) 1.7± 0.9 1.5± 0.8 1.7 ± 0.6

,17I(y. 3n) 1.6± 0.8 0 ± 3 5.5 ± 2.3

(y, 6n) 0.9 ± 0.5 1.2± 0.6 1.5 ± 0.8

('/, 7n) 0.9 ± 0.5 0.5 ± 0.3 0.1 ± 0.1

(y, 8n) 0.7 ± 0.4 0.6 ± 0.3 0.4 ± 0.2

(V, 9n) 0.3 ± 0.2 0.2 ± 0.1 0.5 ± 0.3 S(y,.xn) 4.4± 2.2 2.6± 1.3 7.8 ± 3.9

(y, P3n) 1.7 ± 0.9 1.7 ± 0.9 0.9 ± 0.5

(y, p7n) 1.9 ± 1.0 2.1 ± 1.1 0.9 ± 0.5

(y, p9n) 1.6± 0.8 1.6± 0.8 1.3 ± 0.7 I(y,pxn) 5.2 ± 2.6 5.4± 2.7 3.1 ± 1.6

(y, 2p3n) 0.6± 0.3 0.3 ± 0.2 0.3 ± 0.2

(y, 2p5n) 0.5 ± 0.3 0.6± 0.3 0.8 ± 0.4 (y,2p7n) 1.3 ± 0.7 1.0± 0.5 0.4 ± 0.2 (y,2p9n) 1.1 ± 0.6 1.7± 0.9 2.4 ± 1.2

(y, 2pl0n) 2.7 ± 1.4 1.9± 1.0 5.0 ± 2.5 -O'. 2pxn) 6.3 ± 3.2 5.6 ± 2.8 8.8 ± 4.4

(y, 4pl2n) 1.5 ± 0.8 i4± 1.2 2.0 ± 1.0 (*/.4pl4n) 0.8 ± 0.4 1.9± 1.0 2J ± 1.3 (y,4p!5n) 0.4± 0.2 0.6± 0.3 1.5 ± 0.S -(y, 4pxn) 2.7 ± 1.4 4.9 ± 2.5 6.0 ± 3.0 (y,6pl7n) 0.5 ± 0.3 1^ ± 0.8

(y, 6pl8n) 0.1 ± 0.1 0.2 ± 0.1 0.1 ± 0.1 S(y, 6pxn) 0.1 ± 0.1 0.7± 0.4 1.6 ± 0.8

(y. 8pl8n) 0.8 ± 0.4 2.5 ± 1.3 L(y, yp.vn) 19 ±10 20 ±10 30 ±15

t,?Au(y, 3n) 0.9 ± 0.5 2.2 ± 1.1 1.5 ± 0.8

(y. 7n) 0.8 ± 0.4 1.3 ± 0.7 2.4 ± 1.2

(y. 9n) 0.8 ± 0.4 0.6 ± 0.3 0.3 ± 0.2

(y. lln) 0.4± 0.2 0.9 ± 0.5 0.5 ± 0.3 —(y.*n) 2.9 ± 1.5 5.1 ± 2.6 4.6 ± 2.3 Au(y, f) 1.5 ± 0.4 2.7 ± 0.7 6.9 ± 2.0

Pb(y, f) 3.1 ± 0.8 6.9 ± 1.7 17 ±5

68
V.P. Kovalev, V.P. Kharlts, V.V. Gordeev, V. I. Isaev (USSR)

Atomnaya Bnergiya 32, 496 (1972)

REF. EL EM. SYM. A Z

method

Pb

REF. NO.

82

72 Ko 8 hag

REACTION result excitation

ENERGY

SOURCE DETECTOR

ANGLE

TYP| RANGE TYPE RANGE G,N NOX 6- 22 C 22 THR-I DST

MnLUClib

Oircp- rmc

ancKTpO- nni,JlCTCK- TOP

Vra.1 , ipaO > B/A

30 SO 70 90 : i o 130 ISC

Al

22,5 P31 («,/») 1,05=0,08 l,03±0,08 0,97±0,0S 1,0=0,OS 0,95=0, OS 1 ,02±0,08 1 ,04±0,08 ll30Tp0aIIOO

22,3 Al5 •(«,/») 0,99±0,13 0,93=0,13 1.02=0,15 1,00=0,14 0,9i'.±0, 13 1,07=0,13 1,01 ±0,13 A

Ti

22,3 i*3l K p) 1 ,04±0,07 0 , 00 ~^~0 .0 < 1 ,03=0,07 1,00±0,07 0,9S±0,07 l,05±0,07 1 ,03±0,07 »

22,5 Al27 (n. p) 1,0G±0,13 0,94±0,13 1.04 ±0,12 1,00=0,12 0,93=0,11 0,9S±0,U 1,02 ±0,10 •*

Cu

12,

S

P3i (n,/>)|0,97±0,l0 1,04=0,10 1,02=0,10 I,00±0,10 1 ,01±0, 10 0,93±0,10 0,9G±0, 10 *

17,0 i’« Kp) 1,03=0,07 0,T)7=0,07 1,00=0,07 1 ,00±0,07 1,00=0,07 0,95±0,07 O,8S±0,07 *

22,5 P31 (n, p) 0,S7=0,05 0,91=0,03 0,97±0,03 1 ,00±0,05 0,99=0.03 0,03±Q,03 jo, 91 ±0,03 0 , 1 S ±0 , 0!

22,5 Al-7

(«./»)| 0,75=0,00 0,8'* i0,0/ 0.93=0,00 1,00 ±0,05 1,02=0,05 0 ,91 =0,04 0 , 00 =0 ,04 jo , 2S±0 , 00

Mo

22,5 l*31 K /*) 0,90 =0,03 1 0,93=0,03

j 0,93=0,05 1 ,00=0,05 j 0,99=0,05 0,92=0,05 jo ,S 1 ±0 ,0.‘>jo ,21 =0,01

22.5 A

l

27 (.a. P)| 0,S0=0,0S ! 0,93=0,03 j 0,95=0.07 1,00=0,00 0,91=0,03 0, S3—0 .04 io, 72-^0, O'*

i 0,44=0,08

22,5

j ,Vl27 (« a)j 0,72=0,03

j 0,81=0, OS 0,89=0, OS 1 ,C0±0,03 j 0,93=0,OS 0,S7=O,.3S;0,C3±0,03i0,78-0,tS

1 1 W

22,5 1 I’ 31 (/i, p) [ 0,55=0,0'* 0,90=0,04

j 0,93=0,04 1 1 ,00 =0,04 1 0,98=0,04 0,92=0 .04 Jo.0S7=0.04jo,25±0 ,04

22,5

| Al27 (.i,p)j 0,73=0,06 0,84=0,00 i 0,59=0,05 | 1,00=0,05 j 0,97=0,04

J i 1 0 ,Su^ 0 ,04 Jo ,75~0

,

0-ijo , 3 i—0 , 0C

1 Pb

22,5 i P31 (n, p) 0,79=0,04 j 0,35=0,04 j 0,90=0,04 1,00=0,04 0,93±9,04 j 0,S3±0,04 Jo,S4±0,0l|0,3G±0,05

22,5

j Al« (n.p)| 0,70=0,00 0,81=0,03 0,94=0,07 1 1,00=0,00

1 0,9 »±0,OG O.SO-0,03 [0,09=0,05 0,C9±0,12

(over)-

'Oku N8S-4U

in tv. i-it-Mi USCOMM-NIS-OC PHOTONUCLEAR DATA SHEET 69

u.s. department of commerce

NATIONAL BUREAUOF STANOAROS
1,2

1,0 0,8

%

1

«o

1,2 1,0

0,8

1,2

1,0 0J8

1,1

1,0 08

<2

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0,8

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Ifi 08

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l

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I l I l i I l 20 50 70 90 110 120 150 8, zpad

yrxoMue pacnpencjeimn Gucrpux jioTOHeirrpoHOB na Al, Tl, Cu, MX, W, I'D, ofijywiux aaearpoiuMii e ancprucu 32,5 Mm. Acres* Top I*** (», p) SJ**.

70
REF.

METHOD

ELEM. SYM. A I. Kroon and B. Forkman

Nucl. Phya. A179 . 141 (1972) Pb 82

REF. NO.

72 Kr 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,F ABY THR-999 C 350-999 TRK-I DST

999 = 1 GEV

Pb

1

’-0

I <>-• i

- 14 iw.3

i M

1

•

• • •

- •

• • .

* .* \

- • •

•

• 4

• • •

f •

» *

,

•

•

i - *

* * • »1

#

i

‘ •

•

• •

,

* •

*

# •* V . *

4 • •

• ' . . : •

.

14' •*. .

os 0 co* I

-05

"P"

E *,»=»0Me¥

E I«.s450M**

E|*.:550M«*

Elm*.1 ®50***

E U:1000M|«

-14

Fif. 2. The differential lead cross section per unit solid angle in relative units as a function of cos 9 where

9 is the angle between beam and fragment directions for bremsstrahlung energies indicated.

(over)

porm N3S-418

<R IV. 7*1 4-64) USCOMM-OC 26 01 0- Pfl 4 PHOTONUCLEAR DATA SHEET 71

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANQARCf
Bremsstrohlung energy (MeV)

Fig. 4. The tantalum, gold and lead forward-to-backward ratios as a function of bremsslrahlung energy.

Figs. ? and 6. The lead and gold photofission cross section per equivalent quantum as a function of bremsstrahlur.g energy- calculated from the number of fission fragment tracks in the forward glass plate (full curve). The corrected cross sections are also shown (dashed curve).

Table 1 Ratios between the number of fragments in the forward and backward directions recorded in glass

detectors, Nt/N%

Element Present work Proton sandwich

experiment*) from angular sandwich

distribution*) experiment*)

Ta 1.29 ±0.04 Re 1.42 ±0.01 Au 1.19 ±0.02 1.20 ±0.01 1.45 ±0.07 Pb 1.11 ±0.02 1.13 ±0.01 1.61 ±0.15 »>»u 1.26±0.0S

*) Ratios calculated from the angular distributions at 700 MeV.

*1 Ratios obtained with the sandwich technique. '00 MeV for Au and Pb. 800 MeV for Ta.

*) From ref *1. Proton induced fission at proton energy 660 MeV.

9

V.A. Ron' shin, E. S. Matusevich, V. I. Regushevskii,

Sov. J. Nucl. Phys. 2 , 489 (1966).

72
R.F. Barrett, J.R. Birkelund, B.J. Thomas, K.S

Nucl. Phys. A210, 355 (1973)

METHOD

Lam, and H.H. Thies

EL EM. SYM.

Pb 82

RET. NO.

73 Ba 20 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N NOX THR- 27 C 10- 27 BF3-I 4PI

2 . 01- MEAN NEUT ENERGY

J 1 . 1 l . i 10 U It 22 25

E

# (Me V)

Fig. 1 1. Same as fig. 5, for lead and bismuth.

1

H. Baba and S. Baba, Japan Atomic

Energy Research Institute report

JAERI-1183 (1969).

2

H. Baba, Nucl. Phys. A159 , 625

(1970).

15

T.D. Newton, Can. J. Phys. 34 , 804 (1956).

Fig. 15. Ratio a^Ja9 versus atomic number A. Here is the level density parameter taken from

the neutron resonance work of refs. '•*), and a, is the level density parameter derived from the present (y, n) work. Filled circles represent points where nuclei in the neutron resonance and in the

<y. n) experiment were the same. Open circles represent points where the respective nuclei were approximately matched. Triangles represent points which are based on measurement of neutron mean energies at two bremsstrahlung energies only. ro*M N3S-4 is ' IN V. 7-1 4-841 U1COMM.OC 280I0-PS4 PHOTONUCLEAR DATA SHEET 73

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
9 >

e

o&

2W

5 «

e w g«

s <-

S3 S

d — —

5 3

aj

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irt - N N

u* o

u. lb

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a. H

Q

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o

c

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Q u.

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JS <3 £ Q

74

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-» N r* 00 -

—

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—- e ^

§

« 3-2 “ 8 * ;5t N

C 5 3 II « u „ a J - e «

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c 2

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>

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j

. ^

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s

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ta S 3

5 " 5

|

S.K

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g i § §

u ® ,0

<4! « " c

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0

o « S

3 © «

^ ao _ C

C u ra y « > V

e £ J2 g

"3 <— 5 c

3

° £ 2 SSI " ? u c u 1 ill

— a

00 90 e e ’ 3> .2 3 £ = s • SB §’a

1 « 2 </» _ 3 ^-S 2 Zl- >fl rrjr

o

e p

c

a E o

IX o o. §* s

“ 1 5

•5 > u £ .«

- « c ^ si

w p t §33 2 a so u e a >* •- § 'S ‘a — e a

. u

5 «

= 5 * ZJj

a • £

.O

x .a u c. u

.2 S

*3 3^1 u a O. u

/I o y

2 1 ?

« 2 —

- o •§

u. ^> — o22

^2 e «

r- i/t » §|

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J* 1£ E on , ? o c hj a Z ^

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> c ape| Dj £ so; jz « a

.=? » «

« < 2
H. J. von Eyss and G. Luhrs

2. Phyaik 262, 393 (1973) «EF. ELEM. SYM. A Z

Pb 82

method REF. NO.

73 Ey 3 egf

reaction RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE E.XN SPG THR-270 C 150-270 TOP-D 90

R,XN SPC THR-234 C 234 TOP-D 90

Fig. 7. Photoneutron spectra produced by electrons on a thick lead target (4.3 X0 thickness) with primary energies of 150, 170, 182, 202. 234 and 266 MeV. These results are compared with the predictions of a quasi-dcutcron model calculation (solid lines) with the parameters (defined iq the text): a= 140 MeV/c, £we „ = 30 MeV, £fc = — 10 MeV and C'I=I9.0

NEUT E ABV 12 MEV

Fig. 8. Comparison of the shape of the high-energy part of the photoneutron spectra from C, Al, Cu, Cd and Pb. These measurements were performed with the same

•/-shower spectrum, produced in a 0.3 cm thick lead sheet (see Fig. 2b). All spectra were fitted to the value for carbon at £„= 100 MeV. The values predicted by a quasi- deuteron model (solid lines), which are also fitted at £„= 100 MeV, were calculated with the parameters (defined in the text): £,,= — 10 MeV, £wel,= 30McV and C'L= 19.0 for different impulse parameters a=100, 120, 140, 160 and 180 MeV/c

(over)

»o«m M8S-41I

imtv. 7-IAMI USCOMM-NtS-OC PHOTOHUCLEAR DATA SHEET 75

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAnOAROS
Fig. 10. Neutron yield from targets of mass number A relative to carbon, measured at E,= 234 MeV. The target arrangement is that of Kg. 2b. The solid lines are fit curves through the experimental values. The dashed curve shows the energy dependence of

the ratio of the nuclear absorption factors

/

a (Pb)//a (Q, taken from Fig. 6. The error

bars correspond to the statistical error

Fig. 9. Dependence of the production cross section on the mass number A with the neutron energy as parameter, measured at £,= 234 MeV. The y-quanta were produced

in a 0.3 cm thick lead sheet (see Fig. 2b) in front of the target of mass number A. The

solid lines arc fit curves through the measured values. The dashed lines are values calculated using a quasi-deuteron model with the parameters (defined in the text): 7 g £6 = — 10 MeV, £wtU =30 MeV, a.— 140 MeV/c and C'£= 19.0. The dotted curve

represents the dependence NZIA, fitted at A= 12. The error bars correspond to the

statistical error
REF. CL EM. 3YM. A E. Hayward*, W.C. Barber, and J.J.

Phys. Rev. CIO , 2652 (1974)

METHOD

McCarthy

Pb

REF. NO.

82

74 Ha 4 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

$ G,G ABX 15 D 15 NAI-D 90

(15.1) (15.1)

TABLE L Results.

dol/dD, do^/dQf

Target (Arbitrary units) tj

Cd 0.042 x 0.028 0.39*0.05 0.11*0.07 0.09*0.07

to* 0.026*0.020 0.54*0.04 0.05*0.04 0.03*0.04

So 0.084 * 0.036 0.65*0.06 0.13*0.06 0.11 *0.06 Sb* 0.14 *0.030 0.77*0.05 0.18*0.05 0.16*0.05 Nd * 0.14 *0.07 1.03*0.10 0.14*0.07 0.12 *0.07 Ta 0.24 *0.10 1.47*0.14 0.16*0.07 0.14*0.07 W 0.S2 *0.10 1.66*0.12 0.31*0.07 0.29*0.07

Pt 0.23 *0.08 1.94*0.13 0.12*0.04 0.10*0.04 Au 0.39 *0.11 2.08*0.15 0.19*0.06 0.17*0.06 Hg* 0.33 *0.09 2.16*0.15 0.15*0.04 0.13*0.04 Pb* 0.19 *0.14 2.42*0.19 0.08*0.06 0.06*0.06

Bi 0.10 *0.15 2.65*0.26 0.04*0.06 0.02*0.06 Th* 0.31 *0.12 2.26*0.19 0.14*0.05 0.12*0.05 U* 0.21 *0.11 2.38*0.19 0.09*0.05 0.07*0.05

* Data not previously reported.

POL PHOTONS

tjiDCM)

0.19

0 19 0.07

0.20

0.20

0.08 0.07

0.03 0

0

0.07

0.08

TABLE IL Comparison wtfh Sac lay data.

Target

M,| 2 This experiment

(Arbitrary units)

Mol2 Sac lay (mb) Ratio Cd 0.337*0.058 0.508 0.663 ±0.114

In 1 0.507*0.046 0.591 0.859 ± 0.078 Sn 0.550*0.072 0.822 0.669 ±0.096

Sb a 0.590*0.061 0.794 0.743*0.077 Nd » 0.837 * 0.100 1.170 0.715*0.086 Ta 1.19 *0.18 1.88 0.633*0.096 W 1.05 ±0.17 2.05 0.512 ±0.083

Pt 1.67 ±0.16 2.70 0.619*0.059 Au 1.62 ±0.20 2.92 0.555*0.068 Hg* 2.16 *0.20 3.29 0.540*0.060 Pb* 2.20 ±0.27 3.43 0.641 ±0.078

Bi 2.53 ±0.31 3.43 0.737*0.090

Th 1 1.89 ±0.22 2.73 0.692 ±0.080 U» 2.13 ±0.22 2.83 0.754*0.077

0.656*0.021

* Data not previously reported.

FORM N3S-418

IR EV. 7-1 4-641 USCOMM-OC 28010- PSA PHOTONUCLEAR DATA SHEET 77

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAnOAROS
REF.

METHOD

ELEM. SYM. A , i K.E. Jackson, G.E. Thomas, and K.J.

Phys. Rev. Cg., 1153 (197*0

Wetzel

Pb

REF. NO.

82

lb Ja 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 10 D 10 SCD-D DST

(10,83) (10.83)

FIG. 6. Angular variation of the elastic scattering cross section in lead. The measured values are shov.-n together with the errors of measurement. The solid curve represents the values calculated using the Delbruck

amplitudes of the CERN group (Ref. 18), the broken curve, using those of the Trondheim group (Ref. 19), and the dashed curve is the variation expected for no Delbruck

scattering. The two curves which include Delbruck scattering are extended only to the same large angle for which the corresponding Delbruck amplitudes have been

computed.

TABLE HL Comparison of calculated and observed

values of the 90* cross sections for elastic scattering and of the. ratio at 90* of Raman to elastic scattering by

various nuclei for 10.83-MeV photons. The parameters

used in the calculations are given in Table II.

<*«,!„ (90°)/dn (mb/sr)

^il2L/dv«E>

Target Calc Exp Calc Exp

Tb 0.036 0.031 = 0.003 0.80 0.51*0.06 Ta 0.055 0.037 * 0.003 0.28 0.18*0.04 Pb 0.076 0.079* 0.005 0

Bt 0.101 * 0.006 0 ~0

Tli 0.128 0.129*0.015 0.91 0.80*0.08 U 0.157* 0.182*0.017 1.03 0.85*0.08

a If the Livermore parameters (Ref. 33) for 23SU are used then this calculated value would be 0.210 mb/sr.

18

F. Ehlotzky and G.C. Sheppy, Nuovo Cimento 33 , 1185 (1964).

19

K. Mork and P. Papatzacos, private communication.

33

C.D. Bowman, G.F. Auchampaugh, and S.C. Fultz,

Phys. Rev. 133 , B676 (1964).

FORM N3S-418

(REV. 7-14»e4> USCOMM-OC 26010-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANOARQ3 PHOTOMUCLEAR DATA SHEET 73
V. S. Evseev, T. N. Mamedov, 0. V. Selyugin

Yad. Fiz. 21, 245 (1975)

Sov. J. Nucl. Phys. 21 , 129 (1975)

REF. ELEM. SYM. A Z

METHOD

Pb

REF. NO.

75 Ev 1

82

hmg

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N SPC 6- 31 C 31 SCI-D 140

Neutron energy spectra have been measured in the energy range 2 £ £, £ 3 MeV for photoexcitation of

the nudei Ta. Pb, Bi. and Th by brcmsstrahlung with maximum energy 31 MeV. From the neutron spectra we have determined values of the nodear temperature T after emission of the first neutron: 1.01 ±0.04, 1.12x0.04, |.| 1 1 0.04, and 1.25 xO.OS MeV respectively for Ta, Pb, Bi, and Th. Comparison of the values obtained for the nuclear level-density parameter with the predictions of the statistical theory of nudear

reactions shows that this theory does not describe the decay of collective nudear states of the giant dipole resonance type.

foam N 8S-4 18

l A cv. 7-1 «-•«> USC OMM-N 8S-OC PH0T0NUCLEAR DATA SHEET 79

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAnOAROS
ref.

method

6. Bologna, V. Bellini, V. Emma, A.S. Figuera, S. C. Mllone and G.S. Pappalardo

II Nuovo Clmento 35A, 91 (1976)

Lo Nigro CL CM. SYM. A Z

Pb

REF. NO.

82

reaction RESULT excitation

ENERGY

SOURCE OETECTOR

angle

?VP| RANGE TYPE MANGE

G.F RLX 220-500 D 220-500 TRK-T 4PI

COHERENT BREMS

12

0£ o

c*

1 1 1 1 ' 1—

: +>->

.

3

i

' i i r >

a) b)

1

1 1

1 1

1 1 1 1 *

. i.Llj

c)

1 1 1 1 1 I

a)

—I . I » i 200 300 400

A.(MeV)

j

300 400 500

Fig. 6. - Photofission yields per equivalent quantum of Bi, Pb, Au and Pt as a function

of the first peak energy kt of photons. The dots are the experimental data; the dashed

curves represent the yield functions estimated as described in sect. 5. a) Bi (v f) b) Pb (r»f). c) Au (Y. f), d) Pt (y, f).

FORM H8S-41I miv. 7.1 4.441 uscoMM>Nas<oc

over PHOTONUCLEAR DATA SHEET 80

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUN C AU OR STANOANOS
Fig. 7. - Photofission cros3-section estimated by our unfolding method. For Bi the procedure used to deduce the FWHM of the first maximum is indicated, a) Bi (y, f), b

)

Pb (y, t).

81
REF. V. Emma, S. Lo Nigro, C. Milone

Nucl. Phys. A257 , 438 (1976)

ELEM. SYM.

Pb 82

method REF. NO. 76 Em 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.F ABY THR-999 c

999 TRK-I 4PI

Table 1 Measured values of <r, at £ = 1000 MeV and deduced values of <rk assumed constant from £0 to 1000 MeV

999 = 1 GEV

Element Z*/A

(mb)

Eo (MeV)

<Tk (mb) .

Bi 32.96 123 ±0.6 200 7.6 ±0.6 Pb 32.45 5.4 ±0.4 220 3.6 ±0.3

TI 3110 4.1 ±03 230 2.8 ±0.3 An 31.68 10 ±015 240 1.4 ±02

pt 31.18 1.1 ±0.08 255 (8 ±0.7) x 10“ 1 Re 3021 (3.7±0.3)x 10" 1 280 (2.9 ±0.3) x 10“ 1 W 29.78 (33 ±03) x 10-' 290 (2.8 ±0.3) x 10" 1 Ta 29.45 (33 ±03) x 10- ‘ 300 (2.7 ±03) x 10“ 1 Hf 29.04 (1.7 ±0.2) x 10“ ‘ 310 (1.4±02) x 10“ 1 Yb 2831 (13±0.1)xl0-‘ 330 (12±0.1)x 10~ 1 Tm 28.18 (73 ±0.8) x 10“ 2 335 (6.8 ± 0.8) x 10“ 2 Ho 2721 (3.6 ±0.4) x 10- 2 355 (3.5 ±0.4) x 10“ 2 Dy 2630 (16±0.3)x 10" 2 360 (2.5 ±0.3) x 10“ 2 Tb 2638 (23 ±0.3) x 10“ 2 370 (2.5±0.3)x 10“ 2 Gd 26.04 (1.6±02)x 10" 2 380 ( 1.7 ±02) x 10“ 2 Sib 2536 (13±02)x 10“ 2 390 (1.4±02)x 10“ 2 Nd 24.96 (92 ±0.9) x 10" 2 405 (1 ±0.1) x 10“ 2 Ce 24.00 (8 ±0.9) x 10“ * 420 (9 ±1 ) x 10“ 2 La 2339 (8.4±0.9)x 10“* 430 (1 ±0.1)x 10“* Sb 2136 (I2±02)x 10“ 2 460 ( 1.5 ±03) x 10“ 2 Te 21.19 (8.8 ± I )x 10“ 2 465 (1.2 ±02) x 10“ 2 Sn 21.06 (13 ±02) x 10“ 2 465 (1.7±0.3)x 10“ 2 Cd 2049 ( 1.7 ±0.3) x 10“ 2 470 (2.2 ± 0.4) x 10“ 2 Ag 2047 (2 ±03) x 10“ 2 470 (2.6 ± 0.4) x 10" 2 Zb 13.76 (2 ±0.4) xl0_l 515 (3 ±0.6) x 10“ 1 Cu 13.44 (14 ±0.5) x 10* 1 515 (3.6 ±0.8) x 10“ 1 Ni 1335 (14 ±03) x 10“ 1 510 (3.6 ±0.8) x 10“ 1 Fe 1110 (3 ±0.6) x 10“ 1 510 (4.4 ± 0.9) x 10“ 1

Fig. 2. Nuclear fissiiities as a function of Z

1/A. Experimental points: solid circles represent oar data:

squares, the data from ref. i

); open circles, the data from ref.

7

): and crosses, the data from (p.f) experi- ments20

). The straight line is the best tit calculated from our data for Z

2/.4 > 26. The dashed curve is the curve VI calculated by Nix and Sassi 12

).

form N3S-418

IR EV. 7-1 4-s«> USCOMM-NBS-OC

4

A.V. Mitrofanova et al.

Sov. J. Nucl. Phys. 6_, 512 (1968)

.

V Methasiri et al., Nucl.

Phys. A167 , 97 (1971).

12

J.R. Nix et al., Nucl. Phys.

81, 61 (1966)

.

20

N.A. Perifilov et al., JETP

(Sov. Phys . ) 14 , 623 (1962)

;

Proc. Symp. on the physics & chemistry of fission, Salzburg

1965, vol. 2 (IAEA) Vienna,

1965, p.283.

u.s. oepartmentof commerce NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 82
REF S. Kahane, R. Moreh and 0. Shahal

Phys. Rev. C 18., 1217 (1978)

EL EM. SYM.

Pb 82

METHOD REF. NO. 78 Ka 6 hg

REACTION RESULT excitation SOURCE DETECTOR

ANGLE ENERGY TYPE RANGE TYPE RANGE

G,G ABX 6- 12 c 6- 12 SCD-0 DST

(6.84-11.39) (6.84-11 .39 )

Monoencrgetic photons at eight energies in the range 6.84-11.39 MeV were elastically scattered from

targets of "'Ta, Pb, and “*U at 9 m 1.21*— 1.50*. The differential scattering cross section at such angles was measured relative to the Compton cross section. The photon beam was obtained from the Ni(n.y)

reaction using thermal neutrons. Strong evidence for the contribution of both Rayleigh and the real Delbruck

amplitudes and for their destructive interference was obtained.

ENERGY .Msvt FIG. 3. Differential cross sections for clastic scattering of photons from U and Pb. The solid curves

denoted | D— R|* represent theoretical values obtained by Including the Rayleigh, Delbruck. nuclear resonance,

and Thomson scattering amplitudes. The dashed curves

denoted | R|l and | D|J represent almost pure contributions of Rayleigh and Delbruck scattering, respectively.

I D+R| 2 represents the coherent sum of Delbruck and

Rayleigh contributions taken to have the samt phase.

The NR and NT coherent contributions were also In- cluded In the dashed curves.

TABLE I. Differential cros3 section (mb/sr) of elastic photon scattering from U at 9=1.21*

±0.26* and Pb at 0 = 1.25*±0.26*. Columns 4 and 7 give the cross section after excluding the

real D amplitudes.

E (keV) Exp. U (Z = 92

)

Theory No real D Exp. Pb (Z = 82) Theory No real D

6 837 1274 ±50 1265 2118 917 ±68 885 1443 7819 932 ±120 890 1675 657 ±53 631 1138

8 120 812 ±220 834 1600 533 ±160 570 1064

8 533 732 ±90 760 1494 452 ±45 503 967

8 999 691 ±50 694 1392 443 ±15 436 868

10 596 747 ±450 604 1169 340 ±260 333 642 11388 489 ±114 607 1108 294 ±70 337 594

form N3S-418

CV. 7-1 4.641 use OMM-N 6S-OC rnuiunuLLCSK UAI A an C C I 83

CE

OS
*tr. K. Baba, I. Endo, M. Fujisaki, S. Kadota, Y. Sumi,

Y. Murata, S. Noguchi, A. Murakami

Nucl . Phys, A322 , 349 (1979)

METHOD

H. Fujii, EL CM. SYM. A Z

PB

rep. no.

82

79Ba8 hg

REACTION RESULT EXCITATION ENEROY

SOURCE OETECTOR

ANCLE

TV P( RANQC TYPl RAN6C

G.PI- SPC *668 C 700 MAG-0 0. 0. G.PI+ SPC *668 C 700 MAG-n 44

Abstract: The photoproduction of charged pions in the sub CeV region has been studied for two nuclear

targets, copper and lead, by using a magnetic spectrometer. The photon energies are determined in steps of SO MeV by a subtraction method for the bremsstrahlung spectrum. The observed pion momentum spectra reveal characteristic features of quasi-free production (QFP) even for such heavy nuclei as copper and lead. The data are compared with results obtained by a PWIA

calculation, which give a good fit to the data. The QFP cross sections per relevant nucleon at 44.2* and the average photon energy (It ) = 668 MeV are found to be approximately proportional to A

~ 1

/

*AVG PHOTON ENERGY

u>

““H

-2.0 2

5A

3

-1.0

QP

TJ —Jd

Cl1

(b> Cu(r.jf)

, 563 r La-VI-I l 28.4*

t,=0.25 llW1

400 soo

(M«V/c) 600

(e) Cu(t.iO

- 2.0 I

f ,

f \yr~K

t r 668 MeV

| 28.4*

: 1 f,=o3o.

K

i 500 600

PION MOMENTUM- P„ (MeV/c) PION MOMENTUM P„ (MeV/e)

Fig. 1. Typical examples of the measured pion spectra. Errors are statistical only. The solid curves are

/. x (PWIA calculation) with parameter values pe = 270 MeV/c, e = 25 MeV and f„ being shown in the

figure. The dotted curves in (a) and (b) correspond to the cases in which pF = 300 MeV/c while e is unchanged, and e = 35 MeV while pf is unchanged, respectively. Anows denote the values of the pion

momentum, p(ru, which is calculated from the assumption that the target nucleon is free and at rest.

OVER

rexM MaS-418

IREV. 7-1 4- Ml uscomm-nbs-oc PHOTONUCLEAR DATA SHEET 84

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OR STANOAROS
O W> O «0

(JWqrf) (N iO 2)/(UW(lU),ip|

II. «

S £ c c

E

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1

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c\i n \0

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— CM rv| boo’

d d d

>o d »r « r-bbobo’bbbb oo! dddddddd-n - •* —.p^ — o^'tr^r-r^q'Ci n ^ m p* « Oc O' X 30 pn. 3

s» ooooooo

VI

m ~ ~ — >«dridodc

„ >

o*aor*NO»c\*rmrM **CM0*3*P''0'0'<*'0£££* — oa'»'»r-*'’G — Z ^ ^wn ^ nndn«nndnmnN(N(Nnr««N<N^f'

C 0 c

«c ** O u « j£ 3 o *5

* Is

48 s. 2

= H

5 v

(j^qrl) Z/(UPIPP)

«M o

(jvqrt) NKtfWPP)

2 * i 0 «- C 2 1 = 2 io

o 2

. i

I

; o

•= b s

s sr 2

£ b ^

»i- 5j 2r

8.5. 5 uoN £ u “ 5|S

^ 3 2

r* — LLi

2u

** ..O

0 c

i: o

3 .2 II

1 i O ^

Q. ^ 0 mm - s ^2

1

S

> 2 '*6 c ^H<« « u

O

o

Q£

Q_

a:

u_

i —

«

(S) cocr

II a.

LuO’

85
ref. V.I. Noga, Yu.N. ftanyuk, Yu.N. Telegin

Sov. Atom. Ener. £7, 735 (1979)

EL EM. SYM.

Pb

A N

00 8\>

METHOD REF. NO.

79 No hg

REACTION RESULT excitation ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,N RLY 6-999 D 230-999 ACT-D 4PI

999=1 .2 GEV

Fig. 1. Neutron yield fn

as a function of target thickness l pb at 230

(O) and 1200 MeV (•).

Fig. 2. Neutron yield fn

as a function of electron energy Et under

saturation conditions : results of

[3, 4] (•), our results (O); calculated in [5], ——calculated in

[61 .

form N3S-4I8

(R E V. 7o t 4*641 use omm»n as«o c PHOTONUCLEAR DATA SHEET 86U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
ref. S.A. Hayashi, S. Yamamoto, I. Kimura, K. Kobayashi, T. Mori,

S. Kanazawa, H. Nishihara, S.A. Bokharee, R.W. Emmett, R.C. Block

M. Becker, D.R. Harris, B.K. Malaviya

Ann. Rpt. Res. Reac. Inst., Kyoto Univ. 13* 23 (1980)

METMOO

"

EL EM. SYM. A Z

Pb

ref. no.

82

80 Ha & egf

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

G.XN SPC 7-60 C 30,60 T0F-D DST

Three kinds of photoneutron targets, the cylindrical lead target, and the spherical and spheroidal tantalum targets were designed as pulsed-neutron sources with an electron linear accelerator

for the fast neutron spectrum study in assemblies of reactor materials. Angular distributions of photoneutrons and X-rays from these targets bombarded by about 30- and 60-MeV electrons were

obtained by the activation method and the results show fairly isotropic photoneutron distributions except to the forward and extraordinarily sharp forward peak of X-rays. Among these three targets the spheroidal tantalum target is seen to be superior to others from the viewpoints of the isotropy

ot photoneutrons and of a lower forward peak of X-rays even at the higher bombarding energy. However, for the lower electron energy, about 30 MeV. both the lead target and the spherical tantalum target can be usable for the above purpose, although the maximum beam power of the former is restricted to about 120 watts. Neutron spectra from these targets were measured in the energy range from 20 keV to 10 MeV

by the LINAC TOF method. It was found that neutron spectra from tantalum targets are apparently softer than that from the lead target. "'th the above characteristics obtained experimentally, these targets will be used for the neutron spectra measurements in assemblies of reactor materials.

ANG DST WITH ACT PET

Fig. 4. Angular distribution of photoncutrons emanated from the cylindrical lead target bombarded by 32-McV electrons. The -*\a activity from the

,T AI(n. (t'ri'Na reaction was measured with a Ge’l.ii detertor. A and show the measured reaction rate of the activation foils, which

were placed on the vertical plane at the position of 20 cm from the effective center ol the target. O and • show the measured rate, on the horizontal

plane. Solid curve shows the calculated one normalized at 45 degrees.

Fig. 5. Angular distribution of photoneutrons emanated from the cylindrical lead target bombarded by 62-MeV electrons. The ! *Na

activities from A1 foils are shown. The symbols

are the same as in Fig. 4. A number shown by arrow is the value at zero degree.

(over)

rOM M8S-41*

1R*V. 7-14-MI USCOMM-NSS-OC PHOTONUCLEAR DATA SHEET 87

U.S. DEPARTMENT OF COMMERCE

NATIONAL SUN ( A U OF STANDARDS
T T

Fig. 12. Distributions of X-rays near the forward

direction around the central axis of the electron beam

from the spherical tantalum target bombarded by 36- MeV electrons and the spheroidal tantalum target by

64-MeV and 28-MeV electrons Uid. Fig. lib)). The

,T Ni activities from Ni foils by 36-Me\ . 64-MeV and 28-MeV electrons are shown as the symbols T , • and O. respectively.

Fig. 14. Photoneutron spectra from the lead target and the spherical tanta- lum target bombarded by approximately 30-MeV electrons. curve is obtained by eye guide fitting of the measured tantalum target data and curve is for the lead data. curve is obtained by fitting the data of the lead target with nuclear temperatures of evaporation spectra. T,=0.89 MeV (£3.8 MeV neutrons) and T.= 1.70 MeV ( >3.8 MeV

neutrons). •••• shows data measured with the s Li glass scintillation or

the l0 B-vaseline-plug Nal(Tl) detectors. DCCC shows data with the liquid

scintillation detector.
mtt. J. Arends, J. Eyink, A. Hegerath, K.G. Hilger,

G. Noldeke, H. Rost

Phys. Lett. 98B, 423 (1981)

MCTHOO

B. Mecking, CL EM. SYM.

Pb

REF. NO.

82

81 Ar 1 hg

reaction RESULT EXCITATION eNEROY

SOURCE OETECTOR

ANGLE

TYPE RANGE

G,MU-T ABX 215-386 D 215-386 TOF-D 4PI

DATA ALSO IN 81AR3

Double differential crots sections for the photo-emission of protons and charged pion production were investigated for

a number of target nuclei (He, Be, C, 0, AU Ti. Cu, Sn, Pb) in the photon energyrange* * (215-386) MeV. On the basis of these experimental results the total hadronic cross section was determined.

Fig. 7. Parameter o0 ** * function of photon energy (data points) compared to the mean cross section for a free nucleon (solid line).

The total hadronic cross sections for all measured

elements can be parametrized in the form

o(k,A) * aQ (&) • A

x

, A being the atomic number, with a constant exponent x » 1.1. The photon energy dependence of o0

is shown

in fig. 7. Compared to the mean cross section for a free nucleon (the solid line in fig. 7) the excitation of the A-resonance is suppressed. Such a suppression is ex- pected in the A-hole model [11],

'OKU M8S-41C (MV. 7-1 USCOIMH4IS-OC PHOTONUCLEAR DATA SHEET 89

U.S. OeRARTMENTOF COMMERCE

NATIONAL SURCAUOP STAnOAROS
*ir. J. Arends, J. Eyink, A. Hegerath, K.G. Hilger, B. Mecking,

Go Noldeke, H. Rost

Nucl. Phys. A3 58 , 367c (1981)

EL EM. SYM.

Pb 82

METHOO ref. no. 81 Ar 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TVP C RANG! TYtf RANGE

G.MU-T ABX 215-386 D 215-386 TOF-D 4PI

AbStr^LSU'I*

dirrent

:

al

. Cr0SS secti0ns f0P the Ph°toemission of protons and

P;°n

n

Ph

? 0PTr0dUrCtl °? were investigated for a number of target nuclei

the *Rnnn Rnn^J) ? Tl

: C *’ Sn

l US1ng the ta 99 ed bremsstrahl ung beam at tne Bonn 500 MeV-Synchrotron in the photon range k = (215-386)MeV On the ba- S|SeOf these experimental results the total hadronic cross section was detert?soo

c . , - . k(MeV

rig.- 2. Cross section for the process: < _ + Pb - p + x. The proton threshold is 53 MeV.

5.00

ISO

too

ISO

100 2 2 so £

~S 200

a ISO

100

0 50

000

175

k (MeV)

Fig. 3. Total hadronic cross section for Be. The Jatj section taken from ref. ). ire compared to the cross

The photon energy dependence of the total cross are similar to the Be results. The complete data se f form

sections for heavier nuclei

-i’1 parametrized in the

o(k,A) = o

Q

(k) . A*.

FOMI NSS-41S

IREV. 7-1 4>«4i USCOMM-NSS-OC PHOTONUCLEAR DATA SHEET 90

U.S. DEPARTMENT OF COMMERCE

NATIONAL EUREAUOF STANOAKOI
mtf A. LeprStre H. Beil, R. BergSre, P. Carlos, J. A Vpvs^iArp

Nucl . Phys. A367 , 237 (1981)

METHOO

Fagot, A. De Miniac, EL EM. SYM.

Pb

ref. no.

82

81 Le 1 egf

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE MANGE

G,SN ABX 25-140 D 25-140 MOD14PI

G,XN ABX 25-140 D 25-140 MOD14PI

Abstract: The total photonuciear absorption cross section for Sn. Ce, Ta, Pb and U has been studied from

25 to 140 MeV using a continuously variable monochromatic photon beam obtained from the annihilation in flight of monoenergetic positrons. The basic experimental results are a set of data

giving sums of inclusive multiple photoneutron production cross sections of the form t/'‘(ET )*

in :Ey ) for neutron multiplicities ranging from i - 1 to 12. From these data the total photonuciear absorption cross section <r(tot : Ey ) has been deduced. It is concluded that Levinger s modified quasideuteron model describes the total cross sections reasonably well. When these data

are combined with lower energy data and integrated to 140 MeV they indicate the need for an enhancement factor K for the Thomas-Reiche-Kuhn sum rule of 0.76 ±0.10. No evidence was

found that would indicate an ,4 -dependence for the enhancement factor.

E PHOTONUCLEAR REACTIONS Sn. Ce. Ta. Pb. U(y. xn), Ey » 25-1401 MeVmeasured a(Ey ) summed for x-l-12; deduced <7<E„ total), integrated <x, interaction models. Monochromatic photons.

( G, SN) NO G,1N IN G,SN

cr"'(Ey ) = Z cr(y, in : Ey )

.

Table 3 Integrated cross sections

Sn Ce Ta Pb * U U

<ro -0.06NZ/A (MeV- b) 1.74 2.04 2.61 2.97 3.40 3.40

E*,< MeV) 29.7 25 25 25 18 18.30

f e’. (MeV-b) M- <rGD*(Ey ) dEy

(tr0 unit)

2.0 ±0.1 5

*)

1.15 ±0.09

2.13 ±0.15

1.04±0.07

2.90 ±0.23 *)

1.11 ±0.09

3.48 ±0.23 e

) 1.17 ±0.08

2.98 ± 0.1 5

d

) 0.88 ±0.05

3.58*)

1.05

f ltOM* V

,2. (Mev-b) V- tr, 2\Ey )dEy

(<To unit)

0.96±0.1

d. 55 ±0.06

1.27 ±0.1

0.63 ±0.05

1.73 ± 0. 1

5

0.66 ±0.06

1.69±0.15

0.57 ±0.05

2.59±9.2

0.76 ±0.06

2.59 ±0.2

0.76 ±0.06 (MeV - b) M + N

(<r0 unit)

2.96 ±0.2

1.70±0.12

3.40±0.2

1.67 ±0.10

4.63 ±0.3 1.77±0.105. 17 ±0.3

1.74±0.10

5.57±0.3

1.64±0.10

6.17±0.3

1.81 ±0.10

(AY + N)

t

evaluation of the

- 140 M«V

d Ey contribution 1 .74 ±0.15 1.71 ±0.15 1.81 ±0.15 l .78 ± 0. 15 1.68 ±0.15 1.85 ± 0. 15

(1 + K) ((To unit)

|

<tl(Ey ) d Ey (<Tr> unit) 1.28*) 1.24 ^ 1.30

b

) 1.35 *) 1.18

4

) 1.43*)

*) Ref.

2t

). s

) Ref.

27

). c

) Ref. ’). ") Ref.

2 V *) Ref. ”). The symbols M and N are defined in the text. The last row gives the integrated cross sections for the Lorentz line fit. <rL(Ey ) to the GDR data, published in the above references.

(OVER)

roiw NBS-411

(ftCV. 7» 1 4» 44) USCOftMMMC PHOTONUCLEAR DATA SHEET 91

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STanOAPOS
Fig. 11. The general behaviour of ihe “smoothed” average neutron yield cross sections <r(y, xn)=*

T' i<r{y, in: Ey ) for the Sn. Ce, Ta. Pb and U nuclei studied in the present paper (see text).

E

J

( HtV

)

Fig. 15. Total photonudear absorption cross sections crttot : £, ) » £,) from the present paper, represented by the experimental points and the corresponding full lines, are shown for Pb. Sn, Ce. Ta and

U. These experimental results for photon energies E, between 20 and 140 NleV are compared with: la) Lorentz line tits to the GDR data of the appropriate nucleus represented by the dot-dash cr l

i E, I plots, (b) Quasuleuteron cross sections. crQDiEy ) = i4.6.VZ/ A ur0\Ey

) for the appropriate nuclei, represented by

the dotted <7qD(E,) plots. Here <7 Dt £* 1 ‘ s the photodisintegration cross section of deuterium, to Modified

quasideuteron cross sections. ctocm! £, ) =* ($.VZM)«yDi£,j exp {-D/E,) with D =* 60 MeV. represented by the dashed 9\iqo(E.,) plots. Pertinent GDR data for Pb. Sn. Ce. Ta and U were taken from

92
Rtr- M. Schumacher, F. Smend, W. Miickenheim, P. Rullhusen, H.G. Borner

Z. Phys. A300, 193 (1981)

CL CM. SYM.

Pb 82

MCTHOO REF. NO. 81 Sc 6 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPC RANGE

G.G ABX 2-7 2-7 sen-n 90

2.60-6.67 MEV

Elastic scattering by nuclei in the range of mass numbers between 64 and 238 has been

studied with monochromatic photons in the energy range between 2 and 8 MeV. These

photons were provided either by a Ti(n,y) source installed in the tangential throuah

channel of the Grenoble high flux reactor, or by 24 Na and 56Co sources produced by

deuteron bombardment of A1 or Fe at the Gottingen cyclotron. The photoexcitation of

-3 nuclear levels has been observed and the decay properties and groundstate widths of

the majority of these levels have been determined. For the lead scattering target the coherent elastic differential cross section has been studied in detail. There is evidence that below the photo-neutron threshold the elastic scattering via virtual photoexcitation of

the nucleus can be approximated by extrapolating the real part of the Giant Dipole Resonance amplitude along a Lorentzian urve. Coulomb corrections to Delbriick scat- tering seem to play a small role at 6.5 MeV.

TaMc 1. Differential cross sections for elastic scattering Ida JQ)"* of photons from 5 °Co and J4 Na sources by different scattering targets,

in units of pb/sr. Errors in the last digits are given in parentheses. 9

deg

Scattering

targets

2.599* (MeV)

1754* (MeV)3.010* (MeV)3.202* (MeV)3.254* (MeV)3773* (MeV)

3.4521 (MeV)

90 J3«u 517(25) 57.5(25)* 5606) 47(4) 456 (10)* 34(6) 4904)

J0’Bi 33.1(30) 32 (2) 3301) 32(4) 25.6(20) 29(6) 3305)

M, Pb 31.5(23) 31.0061 35 (8) 27(3) 26.6(22) 25(4) 23 I8i ~m 31.5(33) - 2702) 32(5) 24 (3) 22(7) 34(15) "•’Hg 30.0(27) - 24001 28(5) 25.5(18) 26(8) 20 (8) ««w 22.5(11) - 17 (7) 19(3) 18.405) 18(5) 21 16 ) l, ‘Ta 20.005) 19.2 (6) 193(20)* 20(4) 17.3(21) 18(5) 21 (8) “5 Ho 15.9(13) - 17(10) 1316) 15.6(20) 18(8) - —Nd 11.4 (7) 14.2 (5i“ 15 (7) 14(3) 24.202)“ 13(3) 9 (6) "**Ce 11.1 (9) 11.0 15) - 11(3) 9.5U3) 8(4) i- 127J 8.41 10) 8.6 (5) - 9(2) 7 0) 5(3) - “Sb 8.0(11) - - 10(4) 6.809) - 1770(50)* “Sn 6.5 (7) 7.0 (5) - 5(2) 7.6 (8) 6(3) - ~Cd 67 (5) - - 6(2) 6.6 (8) 7(3) -

120 2J«U 55.1(25) 64 (4)* 4305) 55(5) 574 (10)* 48(5) 4801) ‘"Ta 27.505) 25.0 |9| 227(20)* 22(5) 21 (2) 22(8) - ““Nd 17.9(30) 17.0 |9|4 - 29.8(47)“ - -

* 5 *Co source in Fe lattice * J4 Na source in Al lattice (part of data have been published elsewherei

* Transitions to exaied states observed in addition to the ground-state transition

4 Photoexcitation of nuclear level identified from the size of the differential cross section

FOAM N9S-41I

ip ev. m»mi

U1C3UU.OC 2«OIO.P«4

(OVER)

U.S. DEPARTMENT OF CC.MM- PC - NATIONAL BUREAUOF SfAMOA-DS PHOTONUCLEAR DATA SHEET 93
Tabic 2. Elastic difTerential cross sections da d Q 1 0 = 90°) in pbsr measured with the Ti(n.y) source and compared with theoretical pre- dictions. n: predicted number of levels in a J£ = 25 eV interval at 6.3 MeV. Errors in the last digits are given in parentheses

Scattering

target

6.418 MeV 6.555 MeV 6.759 MeV 7.168 MeV n

exp. th. exp. th. exp. th. exp. th.

23 (12) 10.3 • _ _ - 45

:o* Bi - - 219(39) l> ° 8.0 12 (4) 7.4 1.5(3) 10 5 ** c 5.7 0.1 «. pb 7.0(15) 8.6 - - 6.5(11) 7.4 - - 0.05 “*T1 1586 (92)*-° 7.5 - - 13 (3)

6 6.0 - - 0.4 M, Hg 12 (3) 7.8 74(l7) b 6.5 6.7(15) 6.4 - - 3.4 "*'W 159 (101*-° 6.6 306(33)*-° 6.3 20 (2)*-° 5.6 - - 13

l "Ta 68 (4)°-° 6.3 - - 10.1(12)** ° 5.3 - - 28

,65 Ho 15 <3)*> 4.7 - - 9.5(14)** 3.9 - - 18 “*'Ce 4.1(21) 4.1 r

- . - 17 <!)•»' 3.6 - - 0.04

"*'Sn 4.2113) 3.0 - - 2.5 (5) 2.7 - - 1.9 *“Mo 1,474 (44)°-° 15 407(39)*-° 15 8.5(15)**° 13 817(258)**' 2.0 0.5 "*'Zn 14 (8) 1.6 * 1.8 (5) 1.5 - - 0.3

1 Transitions to excited states observed ** Photoexcitation identified from size of differential cross section

c Photoexcitation reported in [1 1]

Fig. 8. Differential cross sections for elastic scattering of photons

by Pb through 0=90° versus energy, (a) calculated including R,

T, lowest-order D. and N (Lorentzian shape) scattering. |b| same

as (a) but not including lowest-order D scattering, let same as (a) but in addition including Coulomb corrections to the D amplitudes. Id) same as (a) but replacing the Lorentzian shape of the GDR by a Breit-Wigner shape, le) same as (a) but omitting N

scattering. (GDR-parameters: E, = 13.42 MeV. a1 =640mb. f, 405 MeV.) The data for £.=4.291 and 4.767 have been trans- ferred from 0=120° to 90° in proportion to the theoretical pre- dictions (ai

94
mr. G.W. Dodson, E.C. Booth, F.L. Milder,

D.R. Tieger, J. Comuzzi

Phys. Rev. C26, 2548 (1982)

NETHOO

B.E. Parad, B.L. Roberts, CLEM. SYM.

Pb

REF. NO.

82

82 Do 3 egf

REACTION RESULT EXCITATION ENERGY TYRE G,PI0 ABY THR*20 C

SOURCE

140-155

TVPK CKV-I

Photoproducncm of tr° mesons off targets of *Li,

l2C, “Si, *°Ca, natural Cd, and natural Pb was studied using a bremsstrahlung beam with endpoint energies of 140, 14S, 130, and

133 MeV. Photoproduction from a liquid hydrogen target was employed as a nonnahza- on. The measured yields were found to be in disagreement with published theoretical cross sections for 4Li(y,ir0)*Li and also in disagreement with a simple schematic model

which assumed only coherent contributions from the Mi* multipole. The schematic

model, however, did approximately predict the relative magnitudes of the yield curves for the energy range 14—20 MeV over threshold.

detector

ANGLE

1PI

*MEV ABOVE THR

NUCLEAR REACTIONS *U IJC, “Si, *°Ca. Cd, Pb, (y.e-0

); £r — 140— 133 MeV; measured <r, test of reaction model.

FIG. 6. The experimental and calculated yields for r.T 5

) off a range of complex nuclei. The data were

valed so that the 1JC(y,!r°) IJC experimental yield fit the

calculated yield at 9.7 MeV over threshold (see text).

root) N8W41S

(MV. 7*1 44) USC OMM*OC 2S010-*«4 PHOTONUCLEAR DATA SHEET 95

U.S. DEPARTMENT 0=- C0MMEPC-- national bureau of iTi'.najs
A. Leprltre, H. Beil, R. Bergere, P. Carlos, J. Fagot, A. Veyssiere,

I. Hal pern

Nucl . Phys. A390 , 221 (1982)

CLEM. SYN.

Pb 82

METHOO REF. NO. 82 Le 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE G,XN N0X 30-140 0 30-140 M0D-I 4PI

See also A. Lepretre et al . NP A390 , 240 (1982)'

Abstract: From event-by-event records of observed photoneutron multiplicities for photons from 30

to 140 MeV on several heavy targets (Sn, Ce, Ta and Pb), it was possible to determine the mean

number of photoneutrons, v, for each photon energy and the widths W of the multiplicity

distributions. The mean neutron numbers increase smoothly from about three to six over the photon energy span for all four targets. The widths go from about one to two neutrons in the same interval. When these measurements are combined with other photonuclear information, it is possible to extract the average numbers of fast neutrons and fast protons and the average number of evaporation neutrons emitted per photoabsorption.

PHOTONUCLEAR REACTIONS Sn, Ce, Ta, Pb(y, xn), £ =* 25— 140 MeV; measured

photoneutron mean numbers, width distributions; deduced fast evaporation neutron, fast proton average numbers. Monochromatic photons.

MULT ANAL 81 LEI

Table 1 Nucleon emission features following absorption of a 70 MeV

photon by a Pb nucleus

diV

dE

fn

case ibi

iquii fui'i i o

2 w £ 75 i

3 -5 O

a £ g

-

: .5 o S' = 2. .6 3 « • •=_ £ « -3 -

O M « = £Qe | 1- » a

o S' a 2 nf =1 x 3 ^ c _ £

• -a x H e u —

w = Z 3 2

•2 5 g S s “ill 2

.= 2311

a 0.31 0.35 & 1.46 1.37 0.74 £0.16 0.66±0.15

0.23 ±0.04 0.23 ±0.04

o. 4.1 ±0.3 4.1 ±0.3

£,( MeV) 27.3 ±6 26.6±6 £’ (MeV) 42.7x5 43.4 ±5

Experimental data are taken from ref. ') and fig. 2 of this paper, v stands for neutrons and ir for protons; f stands for

fast particles and s for evaporated particles. £* is the residual excitation energy after all fast particles have escaped - carrying with them energy £,. The coefficients a and 0 have to do

with the ratio of fast neutrons to fast protons that are emitted. They are explained in the text. The uncertainties in this table are statistical only.

Taiile 2 Photonucleon emission features for tour targets at 70 MeV

r S £ « -c ~ S

u -3 'S

un C g w II I S It £“

3

r

-Oa.

^ c f > . 2 * 3 4; 5 Jr 2

U C. m

c -3 — O 3 W 2

«— 3 -2 3

U G. 3. ty 2 > £ S E ^ -i ^

JT rsj ^ 'J 2 ^ s 5 = 11 = x

Sn Ce Ta Pb

V 4.3±n.2 4x0.2 4.5 x 0.2 4.8 x 0.2

~xE, iMeVl £* MeVI

0.50x0.11 0.24x0.05

3.8 x 0.3 23.4x5 46.6x6

0.59x0.13

0.26x0.05

3.4 x 0.3 26.3x6

43.7x5

0.71x0.16

0.27x0.05

3.8 x 0.3 28.7x6

41.3x5

0.66x0.15 0.23x0.04

4.1 x0.3 26.6x6

43.4x5

(See caption under table 1.)

iquii ( ui ’i) o — ac 3 o

.2* g JS w

u, £ o E (OVER)

form MS$°41t

IPEV.' 7 oI 4.«4) USCOMM.QC 24010-P44 PHOTONUCLEAR DATA SHEET 96

U.S. DEPARTMENT OF COMMEPCi NATIONAL BUREAU CF STAMGAR 3 S
Ce

Sn

Ej IMfVI

Ta Pb

Fig. 2. Average experimental photoneutron multiplicities vi£„> plotted against photon energy for 25 MeV < £, < 140 MeV. Data points were evaluated using results from ref.

l ). The full line represents

a smoothed average behaviour. The dashed line represents vi£, i values, measured in the giant dipole resonance iGDRi region, in previous Saclay experiments T. Fig. 2a: Sn: fig. 2b: Ce; fig. 2c: Ta; fig. 2d: Pb [where the Z point refers to the SIN

l9

> measurement with stopped »“].

Sn Ce

Ta Pb

Fig. 3. Widths, WiE,) of the experimental photoneutron multiplicity distributions as a function of the photon energy £, for 25 MeV* £, * 140 MeV Data points were evaluated using results from ref.

l ). The full line represents a smoothed average behaviour. Fig. 3a: Sn: fig. 3b: Ce; fig. 3c: Ta; fig. 3d: Pb. 97

Fig

4

Average

experimental

pholoneutron

multiplicities

i'mF,

I

for

lead

plotted

against

photon

energy

t\

for

25

MeV14(1

MeV.

The

full

line

represents

the

smoothed

average

behaviour

of

lig.

2d.

The

dashed

line

represents

the

prediction

of

the

calculation

ofC

hang

and

Wu

IJ

).

\ .

Pb

A=204

Pb

A=204

I 99

Pb

A=204
V.

w

•

V •

.

' J

100
ref. d. Turck, H.-G. Clerc, H. Trager

Phys. Lett. 63B , 233 (1976)

EL EM. SYM.

Pb 204 82

method REF. NO. 76 Tu 2 egf

REACTION result excitation

ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

E,F ABX 24- 50 D 38- 50 TRK-I 4PI

Fig. 1. Cron sections6 for electron inrfurxt Onion in

Ft* and 709 Bi u a function of the incident elec- tron energy Eq.

FISSION BARRIER

Fig. 2. Summary of fission barrier heights obtained from fits to experimental fission cross sections for nuclei with Z < 85.

o: a-induced fission [12]. For 101 Tl, the value of 22.5*1.5

of ref. [3] is also included; &: proton-induced Ossion [12];

a: electron induced fission (present work). Values for different isotopes of the same element are connected by straight lines. The nuclear charge numbers are indicated. The erors are 1 1.0 MeV for proton and a-induced fission [12] and * 1.5 MeV

for electron induced fission.

. Mosel, Phys. Rev. C6 (1972) 971.

D.S. Burnett et al . , Phys. Rev. B134

12

(1964) 952.

L.G. Moretto et al., Phys. Lett. B38

(1972)952.

Table 2

Fission barriers Bf as determined from electron Induced Baton.

In the last column theoretical Ossion barriers according to

(1 ] with surface independent pairing strength are

isotope Bi (MeV) Bf

*®°r

- (MeV)

,04 Pb «7 Pb *•»

wPb

24.0*1.5 24.0 26.3*1.5

26.9*1.5

262

28.6* U

24J*1J

28.1

posm N3S-418

<R CV. 7. 1 4. 64. USCOMM-NBS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 5T ANOARCS PHOTONUCLEAR DATA SHEET 101
ref. K. Masumoto, T. Kato, N. Suzuki

Nucl . Inst. Meth. 157, 567 (1978)

ELEM. SYM.

Pb 204 82

78 Ma 10

REACTION EXCITATION SOURCE oetector

RESULT ENERGY TYPE RANGE TYPE RANGE ANGLE

G,N ABY 8=68 C 30-68 ACT -r 4PI

G,3N ABY 24-68 C 30-68 ACT - r 4PI

G,2N ABY 15-68 c 30-68 act -r 4PI

Analysis is made of reactions interfering with

photon activation analysis procedures.

The activation yield curves have been presented for a number of photonuclear reactions in the epergy range from 30 to 68 MeV, in order to evaluate quantitatively the interferences due to competing reactions in multielement photon activation

analysis. The general features of the yields as functions of both target mass number and excitation energy were elucidated from the data obtained, discussion being given on the results in terms of the reaction mechanism.

Simultaneous neutron activation due to appreciable neutron production from the converter and surrounding materials has also been studied, and. finally, the magnitudes of interferences in real multielement analysis were given in the form

of their energy dependences.

t0‘ 10* Nr

Fig. 2. Yield per equivalent quanta versus target neutron number.

Fig. 8. Activation yield curves for the reactions on Pb. Tl and

Hg.

204 Hg(y, n)20J Hg. 3 l99 Hg(y. n) l97m Hg, 7

204 Pb(y, n) 203 Pb.

204 Pb<>\ 3ni201 Pb. 3 20J Tity, 2n)201 Tl.

O l99 Hg(y. n) 197«Hg.

<> 199 Hg(y, p)

199 Au.

:04 Pbly. 2n)-02m Pb. O

203 TI(y. n>202 TI. • 202 Tl(y. 3n)200 Tl.

form N3S-418

'REV. 7-14-641 use OMM-N BS-OC

' (over)

U.S. OEPARTMENTOF commerce

NATIONAL SUREAUOF STANOAROS PHOTONUCLEAR DATA SHEET 1Q2
E

mu (

M

«V )

Fig. 9 Yields of the ly. m reactions as a function of bremsstrahlung maximum energy jnd target mass number. The

numerical values in the figure are yields per equivalent quanta

in mb.

103

. 'i

- ..

Pb

A=206

Pb

A=206

105

f

Pb . A=206
) /
n. N. Geller, J. Halpern, ar.d E. G. Muirhead

Phys. Rev. _U8, 1302-12 (i960)

iLL EM. SYM. A

j Pb j 206 i 82

METHOO

Betatron; neutron threshold; ion chamber

REF. NO.60 Ge 3 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ancle TVPS KANOS TYP* KANOS

G,N N0X THR C THR BF3-I 4 PI

THRESHOLD

Tasi* L Summary and comparison of neutron separation energies inferred from present threshold measurements with values predicted from mass data and reaction energies. All energies are expressed in the center-of-mass system in Mev.

KmclUm No. runt Present results Other results Method Reference

Pb»*(T^)Pb»» 1 8.09 ±0.07 8.10 ±0.05 LSA 3 8.09 ±0.1 Pb»*(d.<)Pb»* C

• P. M. Van Patter and W. Whallnt. Rev.. Modern Phy». 24. 402 (1954); 29. 754 (1957).

• J. R. Huuensm. Phyuca 21. 410 (1955).

Mev Z\ aaca *or lead from 6.7 Mev to 7 7

threshold. ^ <^ata m the immediate vicinity of

- ..m N8S-418

* . • 4.F.4I 107

U.S. Of-*» AQTMr T

- - ,f*riONAL dUHt-A.-
R«f- K. Reibel , A.K. Mann

PhySo Rev. 118, 701 (i960)

Elem. Sym.

Pb

Ref. No.

60 Re 1

' 206' 82

Method Y's from F

1 ^(p,ory) reaction; protons from VandeGraaff; Nal JHH

Reaction E or AE

(7,7) Ep= 2.05

ad E J

"• Notes <a>= 10.5 ± 0.8 mb

D (average level spacing based on J):

1 6.7 ± 4.5 kev

E = 2.40

P

y 6.9

ryo

/r

y

= 0.6 ± 0.5

f = 0.9 j± 0.4 eV

f

yo = 0.5 ± 0.3 eV

<a> = 9.9 ± 1.5 mb

<a>= 9.7 ± 1.5 mb

= 11 ± 1.6 mb

Samples contained:

rb206

Pb20?

Pb208

- 88$

- 9$

- 5$

form NBS*418

18 - 1 - 93) U3COMM-OC S8S99-P63 PH0T0NUCLEAR DATA SHEET 108

u.s. department of commerce

NATIONAL BUREAU OF STANDARDS
'«f. E.G. Fuller, E. Hayward

Nuclear Physl 55. ^31 (19^2)

Elem. Sym.

Pb

A206

lief. No. 62 Fu If.

82

' :!uvl 50 MeV betatron; BF^, Nal counters

JHH

Reaction E or A E s

ad E ) " Notes

Pb206,7,8

(7,7)

(7,*n)

lt.5-8.5

18.5

J « 3.93 MeV-b

j* corrected for multiple neutron

production.

Self-absorption measurements made

at 7 MeV.

r«»r I observed tranvr>iwH»m v.wrcvicti for eleurMOK .irH.«rptM»r

Target* Absorber ThKiknrsa

if cm: l pm7 : ( v"» » •Pb - Uf ,m i It- * •

n* ION

144 OAAt 00*: 0 *4A otuw

0 A‘*4 00*7 •! 11 :

0U*»A 00*0 0

*4 OlU* 1 •*•: «H-4*

O.N'A# 0 0*1*1 * 12.2 1 01* 0 050 1 04* 00*1 : "r" .

Pb 'A3 0 n :: 0029 .1 Tb 7 N * 0 7UO 0 029 " .1 |._*

7 HA 0.797 0 0:* 1) u| « •pv"*~ T47 0 •*><

n» 7.49 0

’ *> MOM

•) Measured with both target and a Pmwhet al liquid mtrogm icmpcr.ourc

T omc 3 Average level parameters at 6 MeV

Lead Radio-lead Riimu'h

/ 14 rv 10 1 -400 0 *4

•: ih» 24—** 29—105 10—A* rieV> * 1 O.IJ -3 1 0 *4

*. imatMhl mi 20? AH V /' 013 -021 0.14 -- 10 0 2 10 •.{ 1 M.VI- (mbl 21 20 21

I ‘eJflMrV mhi 42 40 4N

SEE ]'AGE 2 FOR FIGURES.

podm NBS-4H

I"S 31 UICOUM-OC llllt'PU

U.S. DEPARTMENT OF COMMERCE

NATIONAL IURCAU OF STANOAAOS

PH0T0NUCLEAR DATA SHEET 109
Ret. Elem. Sym.

Pb

206

Ref. No. 62 Fu k

82

Method PAGE 2 JHH

ad E

curves fr* rui^tnd and hnmuih TV rain* HJ) ftOl as defied m n» ini icq |4» «1 as a f-4#v i •-* of TV .-mi ihviTSK^ ctpw section . for the urgrt and ahwwtwr m«.nr^ uwsi

rs The h.w./.mfai ..nen wnew the measured atienuatnms and ihetf untcrtam««s for ihr rsirr mewi »em*se*ar-re *sr>id im*a» and iiuunl nnrogen imotniun 'dashed lines*. The •uunni? n >*w i* «*••« »* The J'CTJ« tvau aVorrtmn cross scs.i~m at * M«v m <jmtt at ) limes ir« rfeiirtnur mamm. Th.s wawnas vaJue amine* tlcctnc difsnte aaiwid and rtmen

pmuhie t^sna (or it* cacncd two.

• • #// 3», « Fig. 6. Seif-absorption attenuation otfva for lead. Set dacription for fig. 3, fo»mNBS-419

in-i-«3i 'jSCOMM«OC lessf«^«3

T *

' rVrrutn»nrwhJt»cli-ms,rinss<s.:ii-i»fT-t Pb rhe»- .. *te* ?e~:-e- ’ r . * O "-* <m f.w neutron mutlipthifv Points »crr ..ni i.nol f*- -n t t Me\ . ..

ne .ir. >»eM oirveetirpf n*.»r i*ir*sn«s*.f iimiK »tr»l b» : "h- l . * ' " • ••••-

isr. l IV p. iiith represented f*v the ••pen ouies n.tse vn frn.ic i ••« *“* •'* ' Hr trr.sah N-nrsifc the at* »*f abs^.s. is .h-Ir tie •* e en-rj .4 the '~r- " .m p- -»e i suUtcd hv Balashov. er arf. "» lb* V.iihis -f the serin •« r<' * f« " "

st's-neths of the *rtitv' , * ,ns Ref 1L Balashov, Shevchenko & Yudin, Co

be published: Shevchenko,

private communication.

• >e-

*9 r* o OhQTON esE»CVIW»V)

Fig. It. The iv. m erem sections for the lead isotope* near threshold The arrow* indicate the positions of the <y. m thresholds. The arrows beneath the asis of abscissas indicate the energies of the important

dipole tramii ton calculated by Balashov n at. "> The heights of the vertical lines are proportional to the calculated strengths of the transitions.

U.S. DEPARTMENT OF commerce

NATIONAL. BUREAU OF STANOAMOS

PHOTONUCLEAR DATA SHEET 110
Ref. P.Axel, K.Min, N. Stein, D.C. Sutton

Phys. Rev. Letters 10j 299 (1963)

Elem. Sym.

Pb

Ref. No. 63Axl

206 82

MethodBremsstrahlung monochromator 8 0-

Reaction E or ad E J

it Notes

(y,y) 7.85 (350 KeV) Quasi-elastic scattering - poor

resolution of photon; detector did

not separate high energy inelastic

scattering from elastic scattering.

Fig. 135° quasi-elastic cross

section. , n Target Pb

206

88$, Pb207

9$, Pb208

5$.

Cross section scales assume all scat206 tering due to Pb . Triangles

indicate Pb

2^8 contributions from

its three levels.

Optical model considered.

FIG. 1. 135* differential quasi-elastic photon scattering cross sections. The energy resolution values

irregularly from about 75 keV to 200 keV because some

measurements were combined. Relevant (v.n) thresholds are shown along upper abscissa in 1(a)

1 ( 0 .

(a) The target consisted of a natural mixture of Pb

isotopes (Pb204

. 1%; Pb20*, 25*; Pb2" 22*: Pb 208

, 52%). The cross-section scale assumes that the observed scattering was due entirely to Pb*04

. The solid

lines show the limits of the cross section attributable

to Pb204

. The data are consistent with three very nar- row nuclear levels at 6.72 MeV# 7.03 MeV, and 7.29 MeV; the apparent cross sections are a function of the resolution, (b) The target was enriched Pb29* (Pb204

, 88%; Pb24T

, 9*; Pb244

, 3%). The cross-section scale assumes all the scattering is due to Pb204

. The tri- angles indicate the energies of and the contributions

attributable to the three levels in Pb204

.

form HBS-418

( 8- 1

- 63 ) U5COMM-OC 188S6-P63 PHOTONUCLEAR DATASHEET 111

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU C -ANOAROS
REF. R.R. Harvey, J.T. CaldweLL, R.L. Bramblett, S.C. Fultz

Phys. Rev. JJ6, B 126- 31 (1964)

ELEM. SYM.

Pb 206 32

METHOD

Positron annihilation; ion chamber

REF. NO. 64 Ha 2 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G.N in

O

ABX 6-27 D 6- 26 BF3-I 4PI

G t 2N i'll* ABX 12-27 D 12-26 BF3-I 4PI

206

Sample enriched to 99.77$ Pb

(y,2n) threshold 14.37 ± 0.15 MeV

/7C +

Table I. Integrated cross sections in MeV-b, up to 28 MeV, for Pb isotopes and Bi.

Isotope a\y,n)dE J^*(y,2n)dE r<rdE+W

0.06.VZ/.-1

• Pb®4 2.22 0.56 2.7S=0.2S 3.07±0.36 2.96 Pb®7 2.05 0.60 2.65=0.27 2.95=0.30 2.97 Pb®* 1.96 0.95 2.91=0.29 3.21i0.32 2.98 Bi®* 2.17 0.76 2.95=0.29 3.25 =0.33 3.00

Table II. Lorentz line parameters and <r_; values

for Pb isotopes and Bi.

Isotope

Peak

an (mb)

Width

r (MeV) t.MeV) (mb/MeV)

0.00225.1 s '5 (mb/McV)

Pb®4 525 3.75 13.7 15.6=1.6 16. Pb®7 485 3.87 i5.r- 14.5 = 1.5 16 a Pb®8 495 3.78 13.6 14.1 = 1.4 1

. .-T Bi®8 520 3.83 13.5 16.6=1.7

: :c 1 Points shown in top figure are a[_(y,n) Jr(y,np)']L for

*’ ~4 '-'h.ch was obtained from single-neutron counting data,

i •nter figure shows data points for a(y,2n), obtained from double- lip

M-utron Counting data. Bottom figure shows data for <tl(7,») - ' l-ah.2n) for Pb®4

, which represent the formation cross rartmentof COMMERCE section tor the compound nucleus. Solid curve is a plot of a . bur" -» st»-4ards

l.orentz line having parameters given in Table II. The data are

oiicertain below 8 MeV owing to low beam intensities encountered
; * Kr* G. Ben-David, B. Arad. J. Balderman, and Y. *Schlesinger

Phys. Rev. 1^6, B852 (1966)

EL EM. SYM.

Pb

A

206

z

32

METHOD

Nuclear Resonance Scattering using N,G reactions.

ref. no.

66 Be 3 JDM

REACTION REJULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TY Pg PRANGS G,G RLX 5 - 10 D 5-10 NAI-D 5

- 10 135

Fio. 3. Histogram of distribution of observed resonances among the different targets. The atomic number is given directly beneath

the chemical symbol followed by the neutron numbers of the naturally occurring isotopes. Magic numbers are shown in brackets.

i able in. Last or enective cross sections.

Scatterer Energy (MeV) Gamma

source

1 (mb) Energy

Scatterer (MeV) Gamma

source

4 (mb) Sm‘" 8.997 Ni 100 Sn 7.01 Cu 110 pr ui 8.881 Cr 9 Nd 6.867 Co 30 La 8.532 Ni 6 Pr‘« 6.867 Co 3 Te 8.532 Ni 3* Te 6.7 Ni Cu 8.499 Cr 24 La 6.54 Ag 12 Zr 8.496 Se 3050 Cd 6.474 Co 110 Zn 8.1 19 Ni 13 Mo 6.44 Hg 25« Se 7.817 Ni 50 La 6.413 Ti 72 Sc 7.76 K 90 Mo 6.413 Ti 10 Sb 7.67 V . . .* Tl 6.413 Ti 25 Cd 7.64 Fc 40* w Ti ' . . .6 N t 7.64 Fe 7. Sh 6.31 Hg

Pr'«* 7.64 Fe 12* Ti 6.31 Hg 2

•

Tl 7.64 Fe 370. Sn 6.27 75 La 7.634 Cu 7 Pb1** 6.15 Gd Mo 7.634 Cu n Te 5.8 Ni . . .1 Bi* 7.634 Cu 4 La 6.12 Cl 35 Te 7.528 Ni 66< Pr“* 6.12 Cl 1 10 Bi* 7.416 Se 100 Pt 5.99 Hg 40*>c Bi* 7.300 As 80* Tl 5.99 Hg 5c Pb*“ 7.285 Fe 4100 Pb** 5.9 . . .a Cl 7.285 Fe 34 Ce 5.646 Co 17 Pr‘« 7.18$ Se 80 Bi>" 5.646 Co 55 Tl 7.16 Cu 120 Pb*" 5.53 70 La 7.15 Mn 50 Hg 5.44 Hg 75c Bi* 7.149 Ti 2000 Hg 4.903 Co 385

• nun-energy component of a complex spectrum.

• Abroad scattered spectrum with no observable peak structure.

• There are actually two lines of energies 7.647 and 7.633 MeV havine Dual inlfneif ih« in f ha imn mnfn M Ti •

- — — —- f

• .v 4nu «.gjj mev naving equal intensity* in the iron capture gamma spectrum. The crow section

ected. although there is no possibility at present of rMnssnaibla f#\w a.«U

pom Mb V 4 If m*v T.I4.MI

"nr »••*»«- n*

Ill me SIWIS has therefore been corrected. Uuiuuiu nine 1. no poa

deciding which line is responsible for each resonance.

4 Is probably an independent level^in the complex spectrum of Nl r rays on Te.

• Rough estimate.

' May be inelastic component from 7.528 level In Te.

• The relstive line Intensities Is this csss are doe to Groshev and co -workers*

J No line Is known for tbs source at this energy.

1 DUBcult to resoles taosg tbs many soures Uses present at this energy. rHOTOHUCLEAR DATA SHLc. 113
REF.

METHOD

EL EM. SYM. A J. Fo Ziegler and *G. A. Peterson

Proc. Gatlinburg Conference 3 19 (1966) Pb

REF. NO.

206 82

66 Zi 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

E,E/ RLX D 28-70 MAG-D DST

B(EL)

TABLE 1

Values of B(E3 t)

Isotope . Energy

level B( E3 1 ) (eV)

ao *Bl 2. 58 0.527 * .012

2.581

2.73' 0.773 t .020

,#,Pb 2.615 0.788 t .028 Pb 2.621

2.66.1 0.740 ± .012

,8 *Pb 2.60 0.702 t .032

2. Tuan, S. T. , and Wright, L. E., Bull. Am. Phys. Soc. 11, 333 (19661 - eynolds, J. T., Ph. D. Thesis, Duke University; Onley, D. S., private communications. * • 3

‘ EhL'/'p8" "Nuclear Sizes.” Oxford Univ. Press, London. 1961); Hofstadter, R., private communication. '

FORM N8S-418

(REV. 7-14* 94) USCOMM.OC 2901 0.P94 PHOTONUCLEAR DATA SHEET 114

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. EL EM. SYM. A R. R. Hurst and D. J. Donahue

Nucl. Phys. A2I, 365 (1967)

method

Neutron capture gamma rays

REF. NO. 67 Hu 1

206 32

EGF

REACTION RESULT excitation SOURCE DETECTOR

ENERGY TYPE RANGE TYPE RANGE

ANGLE

G,N ABX 9-11 D 9-11 BF3-1 4P1

Table 1 Photoneutron cross sections (mb)

Fig. 1. Cross section (in mb) versus mass number of the target for gamma-ray energies of 9 . 00 , 9.72 and 10.83 MeV. The solid lines are plots of eq. (1) in the text.

Target 7.72 MeV 9.00 MeV 9.72 MeV 10.83 MeV

“Co 9.0 ± 0.8 “As 20.4 = 1.7 “Nb 0.53 ± 0.10 14.6— 2.2 25.8 ± 2.1 ‘“Rh 10.6— 1-7 38.8 x 3.1 ‘•’Ag 1 ‘“Ag j 10.0 ± 1.5 37.6 ± 2.9 “Mn 17.1- 2.6 33.3 ± 2.7 “>Sb \ ‘“Sb j N©

si II p 42.5 ± 3.6 38.7- 5.8 38.8 ± 3.1 ‘“Cs 31.7 = 4.8 52.5= 3.8 ‘“La 8.61 ± 0.86 40.8- 6.5 63.0= 5.0 “>Pr 21.5- 3.2 58.3 ± 4.1 ‘“Eu 1 ‘“Eu J

28.9 - 3.2 61.3 = 14.7 102 =18

‘“Ho 35.6 ± 4.3 92.2 ±27.6 150 =20

“‘Ta 4.14±0.36 45.4 = 3.7 65.0— 5.5 146 =12

‘"Au 44.5 = 3.6 68.4± 13.5 160 =15

,MPb <34.3 238 ±29

."•Pb 22.6 ±11.3 280 ±31

***Bi 36.1 — 12.0 226 ±27

115

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. J. F. Phys.

METHOD

EL EM. SYM. Ziegler and G. A. Peterson

Rev. ,162, 1337 (1968) Pb

REF. NO.

206 82

63 Zi 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE detector

angle TYPE RANGE TYPE RANGE

E,E/ FMF 2-

5

D 28-73 MAG-D 28-73 100

SEP ISTOPS. Bf EL)

_. 206 ?0

f

4.32 M.V

" (4*) - 8(E4t>o.22**»4

Fig. 13. Experimental relative cross sections versus momentum

transferred to the nucleus Pop* normalized to an initiai eiec::. -. energy of 70 ileV for excitations at 2.649, 4.C9, and 4.32 .'..eV. The solid curve is the best at of the G3XOW calculation assummg

the Tussle hydrodynamical modei for the specified trar.s. multipo.arity and the dashed curves are arbitrarily norniu../.e«. for other transition multipolarities.

OVER

FORM NBS-418

(REV. 7- 1X-94) USC OMM.OC 2S0I0.P44 PHOTONUCLEAR DATA SHEET H6

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
4 AUwo 44 a oV^tcrii'itCitiaat Vw>aCi oa TCuUi Ou ri 12 c , cn r w rdn s'a ^ ^ n a)ro Jaii)att4tt.i ij\**i*j aOr v».o c.xcuuUOii oi a uiiCiCiad iroui ^rruir,., sit'aic »o <ii\ c.\CiiCu oiatic aao ueierr.'.ir.c.. uy i.ie j.iCt, ji« scaiiCGn^ n'.ci.aOw) oi luis o.\noriiaicnt ^r.c, oy ot.'.cr ruOinoitSa *ll*o uniis oi i> »*c w.icro c aj iuC o.vCiroA cliMr^c, ** c«*4^ l)) t niu L .s u>c luUaiipOtMniy oi 4itC ir&«isitiona i) \ILU)%p is u«c 5ii*iQ.c*pari*Cie csu^iaic oi vlG).

This experiment

S{EL) Other experiments Level rar.suion o y in*. 0 ^ 2) G- £" G'-£, 0 —a £) XuCiiui W) CiMruClc? trj L £.££)„ Ref. e=i‘

Pi,5** *t.u9 £2 0.25 3=0.02 6.2 a (p,p';0.20

ri>“' 4.

O' *•'•25*; £2 0.263=0.02 7.0

cd(rt,rt

# ;0.o3 (P,/;0.13 ?b« 4.07 £2 0.503=0.02 8.1 c (rt,a')0.3.5 c t>,/;o.i7

Pi,--** 2.65 £3 0.64=0.04 35 a (^,p')0.33 Pb=*» 2.625*'', 2.664*/ £5 0.67=0.04 57 cd • (r.,a')0.56 (p,p'}0.52 Pb“* 2.614 £5 0.72=0.04 39.5 c (a.a'/O.S?

i (e,e')0.53 (?,?)Q.C7

C ip,p';0.56 h (C-1

, 0*7)0.83

i (<>,;>')0.84

j (p,y;o.v7 k vmi i»

, }0.71

Bi"-** 2.61 £5 0.67=0.05 37 c (a,a')0.57

i (e,e';0.55 m (p,p')0.65

Pi,"-** 4.32 24 *» 0.22=0.02 25 a (/»,p')0.05S Pb“T 4,29 L4 0.21=0.05 24 c (a,a')0.12 Pb“* 4.31 ii-t 0.23=0.02 26 0 (a,ci')G. >3

f (c,c')0.24

Pir** 5.23 , .5 0. 15 =C.oo 7.2 e O»,/-)0.057 0.14=0.07 16 Pb5** 5.6 ibj 0.09=0.05 5 c (a,a')0.16 Pb=** 6.2 */> G.07=v.G2 2

w*.0)

Pb"-** 5.2 US 0.06=0.02 14 c (a,a') 0.05

c (p,p')0.054

• y. Y%»iioiS. J. Sand.:.OS. and O. • r. .\.y-. Zi. 512 V 1967;.

5 'vcr4

no* r.' a°4Vca in t..;-» «*.\: ; • :• > t.-i-ru iron; J. C. Kaicie ana R. Woods. PUys. Lcucn 24. 579 vl966).

«

4 \ 4^;or. Pay*. Xcv. 14 a. llj.s v. .o .• L*t:rrs 253 459 >1967*;.

- O. \ . 4 ..o.i. J . Sui.^.r.Os, O. _I-.cc*. M . • ;. .... . P. Lop.uo, Pl.ys. Letters 22, 659 (1966).

• j. S:..“.w..no5 . G. */.. 4 wij. O. oc»*r. V. 4 .. p. L«,;»..to. Pays. Letters 22. 492 (1906).

i». Crar.r.Ci., K. «i 0.r;, ... <*•-; , M. '•*» .rian, Pays. Rev. 122, 925 U961) ; -no H. W. rCcndaU and j. Geaer, » 6iJ. 150. 245 (1963).

*.k. Scott and M. ?. yr;c.;c. 4*..> .. 25. 054 , ; a 0). k 4: ^*O'^-i;0wic*. S. rvopta. s. . /*. .;... 7. W.Lczak. XucL Pays. 79. 495 (1966), references cued therein, and see text oi this section.

• 5- ?• ^••Ca.cr. R. fi. -ox-., .< .*... Jr.-**.;. Phys. Letters 5, 256 (1963).

• 4 . stova*. and N. M. ti.nu, 4 *;«y- 155 d330 U96*>.

• ?. H. Stclaon t

t

a*.. Nuci. Pays Go. v7 looi/.

• Approximate energy oi »cvc: .*•

. ;-***.*. J C Il-icie and R. Woods. Pays. Letters 24, S79 (1966). • S. ninds, n. Marcuant. J. «». a.erre*—fu. ano O. Natnan, PUys. Letters 20, 674 (1966).

117
C. D. Bowman, B. L.. Berman and H. E. Jackson

Phys. Rev. J/78, 1827 (1969)

EL EM. SVM.

Pb 206 82

METHOO REF. NO. 69 Bo 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N SPC THR- 10 C S- 10 TOF-D 135

Tabular data given e

Table VI. Resonance parameters.

G- Width

Isotope This work

Energy in («, y) b c This work d c b

Spectroscopic data b d

(keV) (keV) (keV) (eV) (eV) (eV) (eV) l Pb* 3.00 3.02 0.08±0.Q3* 0.078±0.005

10.4 10.2 0.06:4=0.02 0.13db0.02

16.6 16.7 16.2 0. 14±0.04 0.66±0.07 0.3±0.07 oo) (2+) 25.3 <0.2

29 29.5 <0.4 0.20±0.06 0.35=4=0.13 (>0) (2+) 37 37.6 <0.4 0.7db0.1 (>0) (2*) 40.9* 41.7 41.0 4.13 4.13 3.8±0.4 4.13±0.9 0 (1-) Pb* 3.4 3.36 0.14=4:0.03 0.077±0.006

10.8 <0.05 0.06±0.01

11.4* 11.3 0.54=fc0.08 0.07±0.02

12.3 12.2 0.05=4=0.03 (>0)

14.6* 14.2 0.5S±0.10 0.20=fc0.04

16.6* 16.5 16.5 0.63 0.63db0.03 0.70=4=0.08 0.8±0. 12 (>0) (J-) 20.1 19.6 0.169:4=0.08 0.32±0.06

21 21.8 <0.05 0.28±0.1 0. 18±0.07

25.1 25.1 24.9 0.4±0. 15 0.28=b0.03 1.1±0.2 0.77±0.12 (>0) (n

Pb»k 1.55

7.34

10.2

16.0 33.6

49.9

0.40±0.06 3.4±0.30

1.0±0.1S

0.50=4=0.15

0 The statistical factor l is different depending on whether neutrons or photons excite the nucleus. To make easier a comparison of the results, the present values for Pb39 and Pbm have been multiplied by the ratio (2/'+l)/ (Z/" + I) where /' is the spin of the target for the photonudear experiment and /" is the target spin for the inverse experiment. The Pb19 values are unmodified. k Reference 4.

* Reference &

* Reference 7.

* The uncertainties in the values for g I\s for all isotopes do not include a ±1S% uncertainty in normalisation.

1 The present data were normalised at these resonances using the data from Ref. 7. * These peaks are associated with transitions both to the croud state and the first excited state of Pb19. The excited-state transitions are the stronger (see text). k For Pb19. the energies have not been transformed into the (<|, y) system. 118

form N8S-418

(R EV. 7-1 4.8*1 USC ©MM. OC 260<0-P6«

U.S. DEPARTMENT OF COMMERCE

ATIONAU BUREAU OF STANDARDS
ELEM. SYM.

Pb 206 32

REF. NO.

69 Ve 1 hmg

REF. V. V. VecJbinski and W. R. Burrus

Phys. Rev. L7J, 1671 (1969)

METHOD

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,XN SPC THR-33 C 33 TOF-D C-1Z. DST

I

Table II. (-r,*) reactions induced by S3-MeV end-point

thin-target bremaatrahlung.

Torstt

By (mat

aooaace peal (MoV)

t # r* (MeV)

Threshold*

<7.«) (».#) (t3»). »A1 —22 S3* 3.07 ±0.1 13.1 19.4 24.4

* 93° 3.07 Scat »P1> -1J 90* 130 ±0.1 1.0 143 143

141° 1.43 ±0.1 •Pb —13 90* 132 ±0.1 7.4 143 14.1 141° 132 ±0.1

«"BI -13 90* 104 ±0.1 7.4 11.

1

143

141* i.47 ±ai

• Proa plot at laCe<fi)/»«Bv“] xnu 2L

FlC. 7. Evaporation-analysis

plots ot neutron spectra from

(?,*) reactions. The logarithmic

plots al * (£) /(»,£““) show

moderately good straight-line

fits. Values of T, the magnitude

of the reciprocal slope, are shown. In some cases, T is slightly higher at 90° than at

141°, indicating that a weak

component of direct emissions

is present. These are preferentially emitted at 90°, the direc- tion af the electromagnetic

field.

form MBS-41B

IRCV. 7-14-041 USCOMM-OC 20 010- P04

ENRICHED PB2C6
ref. R. J. Baglan, C. D. Bowman and B. L. Berman Ielem. svm. Phys. Rev. C^, 672* (1971) j Pb

A

206

Z

82

METMOO • NO.

1

i 71 Ba 2

1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYRE RANGE

G.N ABX 8-10 C 9,10 T0F-D 135

(8.08- 10)

FIG. A. The 135* differential threshold photoneutron cross section for :0TPb at low energies versus the energy of the emitted neutron (lower scale) and the excitation energy (upper scale). The arrows indicate peaks which decay to excited

states of the residual nucleus (ES). or peaks owing to contaminating isotopes in the photoneutron sample. The inset shows the 2,? Pb(rt n) cross section averaged with a square 40-kcV wide smoothing function.

Also see: R. J. Baglan et al.

Physc Rev. 2475

(1971)

form NBS-418

(REV. 7.1 4-04) USCOMMoQC 26 010* P6 4

[over

J

PH0T0NUCLEAR DATA SHEET 120

u.s. department of commerce

NATIONAL. BUREAU OF STAnOARDS
TABLE IV (Continued)

Nucleus ElOteV) (MeV)

*r r r.r./r

(eV)

GS

orES J

w (eV) £, (keV) (This work)

£, (keV) from neutroninduced reactions

(Ref. s) (Ref. b) (Ref. c)

JMpb 2.9« 7.379 0.16 3.0 3.9* 0.62 ES

9.9* 7.386 0.12 GS* 10.1 15.9* 7.392 0.17 GS* 2** 0.06 16.2 17 24.9 d 7.401 <0.40 GS d 25.3

30.2 7.406 0.30 GS 1*' 0.23 30.7 29

3S.4 0.22 ES

37.5 7.413 1.8 GS 2* ».r 0.64 38.1 37

40.8* 7.417 7.2 GS 1-* 4.8 41.4 41

90.0 7.466 2.6 GS 91.3

98.6 1.9 ES

114 7.490 2.0 rf 1.6 115

129 7.506 5.4 GS 131 129

138 3.6 ES

156 7.533 0.98 GS 158 166 7.543 0.90 GS 168

182 7.559 16.0 GS rf 12.6 184 257 7.634 26.2 GS i- r 17.5 2&0

299 4.0 ES

. 318 7.696 11.0 GS i* f 7.7 321 493 7.872 3.2 498

547 7.926 .12.3 GS i-<r) f 8.2 553

558 7.937 4.6 564 620 7.999 17.2 GS 14.6 627

659 8.039 8.6 i *J 6.3 666

860 8.241 10.0 GS i*' 7.8 869 “*Pb 1.5 d 8.085 0.4 GS d 1.6 7.3* 8.090 3.4 GS* 7.5 10.3* 8.093 1.1 GS* 10.5 12.9* 0.12 ES

16.1* 8.098 0.40 GS* 16.4 28.5 8.111 0.54 29.0 33.7* 8.116 2.5 GS* 34.3 40.0 8.123 0.86 40.7 50.7* 8.133 1.3 GS* 51.5

53.6 8.136 0.52 54.4 68.9 8.152 1.5 69.9

72.1 8.155 1.4 73.2 75.1 8.158 0.90 76.2 88.9 8.171 4.5 90.2 104 8.187 4.9 106

‘See Ref. 6. d See Ref. 3; resonance not seen In the present work.

b See Ref. 10; approximate energy values taken from ‘Also seen in Ref. 3; resonance parameters from prescross-sectlon figure. ent work.

c See Ref. 13. f F rom angular distribution measurement (see text).

3 C.D. Bowman, B.L. Berman, and H.E. Jackson, Phys. Rev. 178 , 1827 (1969).

J.A. Biggerstaff, J.R. Bird, J.H. Gibbons, and W.M. Good, Phys. Rev. 154,

1136 (1967).

’ ’ “^5 10

Farrell, G.C. Kyker,Jr., E.G. Bilpuch, and H.W. Newson, Phys. Letters

17, 236 (1965).

’

13

E.G. Bilpuch, K.K. Seth, C.D. Bowman, R.H. Ta'oony, R.C. Smith, and H.W. N’ewson,

Ann. Phvs. (N.Y.) 14. 387 ( 1961)

.

121
REF.

F„ R. Metzger

Ann. Phys. 66, 697 (1971)

EL EM. SYM.

Pb 206 82

METHOO REF. NO.

71 Me 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G ,G LFT 2 D 2 SCD-D DST

T = 9.8 t 1.8 MeV. 2=1.704 MEV

TABLE I Angular Distribution of the 1.704 MeV Resonance Radiation*

A4e(98°)/Af„(1 27°) Spin Experiment Theory

12 I.U±0.U

* The observed ratios of the counting rates in the 98s and 127° geometries are compared with

the ratios expected for spin 1 and spin 2. The 98* geometry was approximately twice as efficient as the 127* geometry.

FORM N3S-418

(R EV. 7-1 4* 64) USCOMM.OC 26 010. PC 4

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS PH0T0NUCLEAR DATA SHEET 122
SEP.

method

Yu. I. Sorokin, V.A. Khrushchev, and B.A. Yur’ev

Izv. Akad. Nauk SSSR. Ser. Fiz. 37, 156 (1973)

EL EM. SYM. * z Bull. Acad. Sci. USSR, Phys. Ser. 37, 137 (1973)

Pb 206 82

REF. NO.

73 So 21 hmg

REACTION result EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

fl.XN ABX 8- 27 C 8- 27 BF3-I 4PI

G.mb SEE ALSO 75S012

206

Fig. 1. Cross sections for Pb: the ( ,Tn) cross section a (yn) + 2a(y,2n) + + c(y,np) + ... obtained with a processing step of 1 MeV (points), and the photoabsorption cross section * a(yn) + a(y,2n) + o(y,np) + ..., obtained with alallowance for multiplicity according to the statistical theory (dashed curve)

.

Integral Cross Sections, MeV*b

Reaction and E7 range •PI* ••PI.

3(7 . 7*n) to 20 M.V 3.10 3, .18 3r to 'A) M«V J.So 2. SI

3(T.7’n) to 27 M.v 3.03 \ . .Ti Sr to 27 M.V 3.21 3.2S

j(T.7'n) 20-27 M.V 0,33 0,'J'. Sr 20—27 M.V 0.41 0,47

s(£l)-0.0« ^ 2.90

c(£2) 0.3 0.5

5<r>) 114| U.OI3 0,013

form N3S-418

1 R EV. 7-1 4- 64

1

USC OMM-N BS-OC

U.S. OEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS

PHOTOHUCLEAR DATA SHEET 123
C© P» Swaxin PXCNS-73, Vol.I, p. 317 Asilomar

EL EM. SYM.

Pb

A

206

z

82

METHOD REF. NO. 73 Sw 13 hmg

reaction RESULT excitation ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.G LIT 3- 5 C 5 SGD-D DST

Table: Propertt es of SI;ates Observed in 206,207, 208 pb and 2<9 'Bi

—

J-PI. 3 LEVELS

Nuclei E Y Vr gr*/r r o G(EL) G(,M1)

(keV) (eV) (eV)

3742 - 1 1 0.13(2) 0.001 0.12

206 pb 4114 2 +

1 0.30(6) 5 4326 1 1 0.90(9) 0.004 0.56

4602 1 1 0.23(3) 0.001 0.12

3300 l/2 + a) 0.039(6)

3928 (3/2') 1 0.68(7)

4104 3/2" 1 0.55(6) 8 207 Pb 4140

4627

5/2'

l/2

+ b)

1

1

0.46(5)

0.64(7)

6 0.003

4872 1/2, 3/2 1 3.6(5) ^0.01 M .2

4982 1/2, 3/2 1 4.0(5) * <.01 ^.1 .2

2° 8

p b 4087 2 +

1 0.49(5) 7 4843 1 1 5.1(5) 0.02 2.3

2826 5/2" ( - 6 3 ) c ) 0.09(1)

3977 5/2 — 1 3/2 0.82(8)

4085 5/2"--l 3/2" 0.23(3) ^5

4144 II 0.07(2) %1

209

Bi

4156 ll 0.21(4) n>3 4176 II 0.21 (4) ^3

4206 II 0.25(3)

4747 7/2 —1 1/2 2.9(5) n-0 . 01 3 ^1.4

4784 II 2.7(5) ^0.012 "-1 .3

4822 II 1 -4(3) ^0.005 ’-0 . 7

a ) see ref . 3 b ) se e ref

.

4 c) see ref. 5

3) S.M. Smith, P . G

.

Roos

,

C. Moacad and A.M. Bernstein, Nucl . Phys.

A17 3, 32 (1971

)

• 4) R . A

.

Mayer, B.L. Cohen and R.C. Diehl, Phys. Rev. C2_, 1 898 ( 1 970 ). porm H3S-418

(REV. 7.14*64) USC OMM-N 0S°OC

bj R . A

.

LL,

B rog 1 i a , J .

S

1508 (1970)

. L i 1 1 ey , R. Perazzo and W.R., Phillips, Phys. Rev

124
REF. C . P . Swann

J. Franklin Institute 298, 321 (1974)

EL. £M. SYM.

Pb 206 82

METHOD REF. NO. 74 Sw 11 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G # G LFT 3- 5 C 4-5 SCD-D DST

Table II 6 LEVELS 3744-5038 KEV

Properties of states observed in toe.ioi.stipi, cmd lotBi ; G(EL) and (7(3/1) are the reduced

transition probabilities in Weisskopf units

Nuclei Ey (keV) J* r./r

griir

(oV) To

(eV) £7(EL) G(Ml)

•••Pb 3744 1- 1 0-13 (2) 0-001 4114 2+ 1 0-30 (6) 5 4330 1+ 1 0-90 (9) 0-56 4606 1 1 0-23 (3) 0-001 0-12 4974 1 1 0-8 (2) 0-003 0-32 5038 1 l 2-3 (5) 0-007 0-90

«"Pb 3300 1/2+* 0-039 (6) 3928 . 3/2- I 0-34 (4) 4104 3/2- 1 0-55 (6) 8 4140 5/2- 1 0-46 (5) 6 4627 1/2+t 1 0-64 (7) 0-003 4872 1/2- 3/2- 1 3-6 (5) ~l-2

4982 1/2—, 3/2- 1 4-0 (5) ~l-2

“•Pb 4087 2+ I 0-49 (5) 7 4843 i + 1 5-1 (8) . 2-3

“*Bi 2826 5/2- (0-63)5 0-09 (1) 3977 5 2-13.2 0-82 (8) 4085 5/2--1J/2- 0-28 (3) ~ 5 4144 5/2--13/2- 0-07 (2) ~1

4156 5/2——13/2— 0-21 (4) ~ 3 4176 5/2--13/2- 0-21 (4) ~ 3 4206 5/2~- 13/2- 0-25 (3) ~ 4 4747 7/2-—11/2- 2-9 (5) ~ 1-4 4785 7/2~—11/2- 2-7 (5) ~l-3

4822 7/2--11/2- 1-4(3) ~ 0-7

• See Ref. (11). t See Ref. (12). See Ref. (7).

7C.P. Swann, Phys.

32_, 1449 (1974) . ^S.M. Smith et al .

,

A173 , 32 (1971)

.

12

R. A. Mayer et al .

,

C2, 1898 (1970).

Rev. Letts.

Nucl . Phys

.

Phys. Rev.

fo«m N3S-418

IR CV. 7- 1 4-641 USC OMM-N BS-OC

u.s. oepartmentof commerce

national bureau of stanoaros PHOTONUCLEAR DATA SHEET 125
REF.

METHOP

Yu. I. Sorokin and B. A. Yur'ev

i EL EM. SYM. A

Izv. Akad.

Bull. Acad

Nauk SSSR. Ser. Fiz. 39,

Sci. (USSR) Phys. Ser.

114 (1975)

39, 98 (1975) Pb

REF. NO.

Z

206 82

75 So 12 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,XN ABI CD 1 to -o C 8- 27 BF3-I 4PI

SEE 73S021

Table 1

Ele- ment A

OQ, (7. Tn) MeV • b MeV -b *-!• mb mb X

XMeV-1

Em. MeV M«V J1.4-lf M.V-1

* Thres- hold

j(7. 2 n), MeV

«0(E) M.V X

X b

to 27 MeV to 20 MeV

20-27 MeV

ii} 2.23 DO 1.49 0.41 112 6,7 15.8 .0 1 10.2 19.2 1.66 M4 2.26 1 .66 1.30 0.47 108 6,5 • 5.7 : 1.5 10.2 18.1 1 ,C8 116 2.40 I .65 1 ,40 0.45 110 6.6 15.5 : 1 .r 8.1 17.1 1.71 117 2.52 1 ,!-6 1.39 0.47 HO 6.7 IS.

4

: 1 .6 7.3 16.5 1.72 Sn 118 2.46 1 .92 1 ,5-i 0.30 115 7.1 15.5 10.7 r .6 16.3 1.71 110 2.6) 1.88 1.42 0.44 III 6.8 15.4 22.0 13.2 15, a 1.74

120 2.63 2.07 1.69 0.38 127 7.9 15.3 13.1 3.6 !5.6 1.75

122 2.94 2.03 1.51 0.52 119 7.1 • 5.5 21.8 -*.3 15.0 1.77

124 2.00 1 .9.3 1.44 0.40 114 6.9 15.5 23.2 5.4 14.4 1.79 w"

182 6.68 2.78 2.32 0,46 184 12.5 24.2 5.2 14.9 2,63

1 184 4.88 2,95 2.3.3 0.72 196 13.0 — 23.7 5.2 13.6 2. 65 Au 107 4.06 3.15 2.81 0.34 226 15,5 13.3 20.9 17.1 14.8 2.84 Ph 1 206 3.03 3.21 2.80 0.41 225 16.1 13.5 23.1 6.5 14.8 2.96

208 4.32 3.28 2.81 0.47 231 16.7 13.3 22.6 0.6 14.1 2.93

Bi 20!) 4.59 3.47 2.96 0,61 216 17.9 13.2 21.3 10.2 i4.3 3.00

form N3S-418

:« EV. 7-1 4° 04) USC0MM-N8S-0C PH0T0NUCLEAR DATA SHEET 126

U.S. DEPARTMENT OF COMMERCE national bureauof standards
RCF- J. E. McFee, W. V. Prestwich, T. J. Kennett

Phys. Rev. C13, 1864 (1976)

ELEM. SYM.

Pb

*

206

z

82

METHOD REF. NO.

76 Me 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N ABX 8- 9 D 8-9 ION-D 90

The photoneutron spectrum of natural lead has been observed for phouoexcitation energies of 8999, 8333 , and

~

on a nickel target positioned in a nuclear reactor. The Q values for the three reactions ”*Pb(-y. n)®7 Pb, J07 Pb-

(y, n)Jfl*Pb. and :0*Pb(y, n):05 Pb have been determined and are, respectively, 7369 ± 5, 6743 ± 3, and 8087 ± 3 keV. Neutron groups corresponding to different final states following excitation by one of the three photon components have been observed and their partial cross sections are reported. The distribution and some

systematica of the neutron reduced widths have been studied. The absolute cross sections of the reaction “*Pb(y, iH^Ph at 8999 and 8533 keV photon energies have been found to be 6.8 ± 2.9 and 3.0 ± 2.1 mb, respectively.

8999,8533,8120 KEV

TABLE V. Reduced widths contrasted with spectroscopic factors.

Neutron Reduced Widths Spectroscopic factors Residual £x L* Ey = 8999 keV Ey = 8533 keV Ey = 8120 keV C*S/(2 J+ 1) nucleus (keV) J

* £1 £2 (*27%) (P.d) id,/)

1,TPb b b 0 7

0 1 163 128 0.72 0.71

570 5 " 7

2 1

- 210 . 309 0.90 c 0.97 c

898 j.- 0 1 191 327 127 1.33

2 d

204 Pb 0

0* 0 1 26 107 321 0.30 * * *

803 2* 0 1 959 305 0.11 ...

1165 0* 0 1 294 118 0.19 •* *

1460 2* 0 1 152 e 0.38 • # *

1684 4* 2 1 474 e 0.02 c

1704 r 0 1 285 0 0.33 *• *

1784 2* 0 1 178 e 0.07 * * *

JOSpb 263 3- 7

0 1 190 e 1.02 f 1.56 8

* Minimum possible neutron angular momentum for a given photon multipolarity.

b Reference 18.

c Spectroscopic factor fori, = 3. All others ar e !„= 1

.

d W. A. Lanford and G. M. Crawley, Phys. Rev. C 9, 646 (1974). ‘May exist but cannot be resolved from neighboring components.

f K. Yagi, T. Ishimatsu, Y. Ishlzaki, and Y. Saji, Nucl. Phys. A110 , 41 (1968).

8 R. Tickle and J. Bardwlck, Phys. Rev. 178 . 2006 (1969).

TABLE VI. Absolute photoneutron cross sections.

Target

Isotope Photon energy

(keV) Cross section 4 (mb) Lower bound 4 (mb) Upper bound

(mb)

203 8999 6.8 ... ... 8533 5.0 •••. •* # 207 8999 ... 29.9 40.1 8533 ... 3.0 26.8 8120 ... 5.6 •• • 206 8999 ... 2.3 14.0 8533 • •• 0 15.1

1 10% relative error; 45% absolute error. (over)

COM N3S-4 18 'Rev. 7*1 4- 04) USC OMM-N 8 5-0 C

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS

PHOTONUCLEAR DATA SHEET 127
TABLE IV. Low-lying states in 2or Pb, 20*Pb, and 20S Pb. Observed neutron Relative1 Residual E7 Ex energy (lab) • intensity vh

Isotope (keV) (keV) J* (keV ± 5) (*10%) (mb)

207 8999 0

e 1“ T

1615 100 3.1

570

s- T

1054 42 1.3

898

3-T

727 79 2.4

8533 0

t- T

1159 66 2.1

570

5” 7

601 12 0.4

898

3“7

263 81 2.5

206 8999 0

d 0* 2256 e 19 0.6 803 2* 1446 556 17.2 U65(±10) 0* 1087 148 4.6 1460 2* 789 65 2.0 1684 4* 573 15 0.5 1704( ±1) 1* 551 102 3.2 1784( ±2) 2* 473 59 1.8 8533 0 0* 1780 69 2.1 803 2* 982 147 4.5 1165( ±10) 0* 619 45 1.4 1704(±1) t* ... 0 0.0 8120 0 0

+ 1370 * 181 5.6

205 8999 263 f 3- 7

643 74 2.3

Unresolved groups A 206 8999 1340 3* 908 76

205 8999 0 7

205 8999 2 i" 7 B 206 8533 1340 3* 446 65

205 8533 0

5* 7

205 8533 2 1"

z C 205 8999 576

3“7

330 44 206 8533 1460 2*

D 205 8533 263 i*

2 181 37 207 8120 570 r

7

206 7724 803 2*

207 7555 0 f

7

E 206 8999 2 1 SO ( ±1) 2* 110 61 205 3999 803 (i" I")

* 2

' Unassigned group

... ... ... ... 5*7 5

* Arbitrary normalization corrected tor isotopic abundance and photon yield. Unresolved

group intensities have no isotopic abundance or photon yield correction and are merely quoted

relative to the group corresponding to population of the 20 Pb ground state following 8999-keV

photoexcitation.

h Relative error 10%, absolute error 45%. 18

'Reference 18. M. R. Schmorak et al., Nucl. Data B5_, 207 (1971).

d Reference 19. 19

'Centroid accurate to only 15 keV. K * K ‘ Seth ' Nucl . Data B7, 161 (1972).

f Reference 20. 2 °J. H Hamilton et al phys. Rev. C6, 1265 (1972).

128
REP. D. Turck, H.-G. Clerc, H. Trager

Phys. Lett. 63B, 283 (1976)

ELEM. SYM.

Pb 206 82

METHOD REF. NO. 76 Tu 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,F ABX 27- 50 D 38- 50 TRK-I 4PI

-

'

Fig. 1. Cross section o

e for electron induced fission in 204^06,207 ^08 pj, ^ 209 gj jj a function of the incident elec- tron energy £qTable 2 Fission barriers Bf as determined from electron induced fission. In the last column theoretical fission barriers according to ref. [!] with surface independent pairing strength are Listed.

FISSION BARRIER

F«. 2. Summary of fission barrier heights obtained from fits to experimental fission cross sections for mw-H with Z < 85

o: ^induced fission [12]. For 201

71, the value of 22J±1.5

* of ref. [3] is also included; a: proton-induced [12];

a: election induced fission (present work). Values for different Botopes of the same element are connected by straight lines. The nuclear charge numbers are indicated. The non are x U) MeV for proton and a-induced fission [12] and tl.5 MeV

for electron induced fission.

3 U. Mosel, Phys. Rev. C6 (1972)971

D.S. Burnett et al., Phys. Rev. B134

12 (1964) 952.

L.G. Moretto et al., Phys. Lett. B38

(1972) 471.

isotope Bf (MeV) flfheor ’ (MeV)

204 Pb 24.0: 1.5 204 Pb 26.3:1.5

207 Pb 26.9:1.5

208 Pb 28.6:1.5

209 Pb 24.3:1.5

FOAM M3S-418

(R EV. 7-1 4- 641 USCOMM-H BS-OC

U.$. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 129
D.F. Coope, L.E. Cannell, and M. K. Brussel

EL £ V. ;YM. A z

Phys. Rev. C 15., 1977 (1977)

Pb

REF. SO. 206 82

77 Co 3 hmg

REACTION result EXCITATION SOURCE C£TECTO=

ancle ENERGY 9 ANC- TYPE 3 AN5£

G,G LFT 4 - 7 C 6,10 SCD-D 125

(4.974-6.84) (6. 6. 9. 7) .

L'siiig brvfr.-.sr.-ahlung produced with 6.6 and 9.7 MeV beams, nuclear resonance '-orcsair.ee measurements

were made on targets of and -^’Bi. Ground state iranslwi widths for previously unknown energy

levels with widths 5 l cV were obtained. An interpretation of several of these levels in terms of a particle-core weak coupling mod.! is suggested. TABLE IV. Observed levels and their strengths. The value for Tc assumes gTt/T =3 for

*'J°pb and :>1Pb. and gT^T = 1 for 20rPb and*03Bi. Values in parentheses have uncertainties

in excess of 50 ;. Statistical uncertainties are given for well-defined peaks. Total uncertainties include uncertainties in flux calibration. Energy values are believed to be accurate to ±3 keV for the starred (*) JCo Pb levels and to ±5 keV for the other levels.

Other measurements

Energy To Uncertainty Co) *r,7r r» (MeV) Nucleus (eV) Statistical Total (eV) feV) References

6*54 (Pb) 206 7.4 40

6.73 5.5 40

5.902 4.4 15 40

5.854 (3.0) 5.798 (1.0) 5.639 (0.5) 5.615 (1.0) 5.577 (0.5) - 5.039 1.6 15 40

4.974 0.8 40

6.753 (Pb) 207 (<10) 5.716 (3) 5.6C0 (3) 5.490 (12) 5.223 (3) 5.209 (8) 4.950 C7) 4.o r</r«i 12 4.8751

(13) 3.6 r»/r*i 12 4.847 j 12 7.332* (Pb) 203 38 10 35 35,41 11,10 7.0S3* 14 10 35 15, 17 ±2 11,5 7.063* 29 10 35 15, 31 ±3 11,5 6.721* 15 20 40 15,14 11,10

6.357 (0.5) 6.305 (1.0) 6.262 4.1 45

5.513* 28 2 35 15 11 5.293* 8.6 5 35 5 11

4. 342* 6.3 5 35 . j'* r 5.1 ±0.3 12 4.C-S5* 0.51 40 J* M 2” 0.5 = 0.1 12

5.549 (Bi) 209 6.6 40

5.522

j 5.509 > 5.49$)

17 S 35

5.422 8.3 45

5.293

4 *8 a 5 1

12 15 40

1.4 12

4. 805 > (10)

*% — 12

4. 771 ) 4.301 (3)

2.9 12

4.225 (3)

- -

10 LEVELS 5. 0-6.8 MeV

c * • ia <a c (/! -C c

o >ii>d O 1 M u= I--0

CO •M a- • M C •«- itJ

O'* oo3

o E« ID IO EO c E p— E «C L. Ul o A

Vu*' • cx 01 CU in o A mo ai

• . (/, C •>- >, U CO o <— ai — -M CTl-r- LO r— r— VJ 1- > a co 3 3 oi a o k n c VO CD O C Oi C Olrp— <T3 OV C M DC LU OO CO o a— • 52 Q CM 00 HI 1- k U C CL C Oj . .c o « •<- o •<- ai .-3 w O £ *r- a

• <U CTV 2 • — ui 1— O -M -—

•

</) •M CM OOr- 3 u +j g in

00 C -Q C 3 <C E -C A ^ 3 •r- C k- CTI Q. •ol •—» Q. TO O • O i— z «—

1

• r-^ c aiMoovt- * 3 vo 3 0) o • c * p— •t • . ov UdDi- 01 U C 4-> -3 •— o a. —- <u 3 •t- 4-> —- l/l S_ 9-01

ZZL z: aj -o >— Cl. C * O l/l -J C 00 r— o i/i at * • A3 CO -r- a c ai c C ^ • vn s: c ai o o c c > c c u •<- ai 2

•» 0) <o • • <T5 C +J V|_ (— r— QC -£= CMU- 2 <U ia 9-

oo <v — . 00 k o o - X • 3 <U <D

* <C CO • • • >+_ r— C ai

CL ^) E u tj CL 3 CL O "3

• • JZ • o c • O Q.-I- -1- o CL Q. «=C OO (O U U< V) QC o Op— CM

-- n j i a VIS :i=i» rwiN r O- COWERCr

ewnTnviiiri N a T • s *. a _ j'.VEijC- !1 c .. o haTa twcrT 130
Y. Birenbaum, Z. Berant, A. Wolf, R. Moreh

Phys. Lett. 88B, 239 (1979)

EL CM. SYM.

Pb 206 82

REF. NO.

REF.

METMOO

79 Bi 13 hg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE TYP| AANGC TV PC AANGC

G,N RLY 8-12 D 8-12 SCI-D DST

(8.5-11.4) (8.5-11.4)

-

W(9)=e ai Pi (cose)

Neutron angular distributions around 6 = 90° from the 206 Pb(7, n) reaction were measured using n-capturc 7-rays, Ey = 8.5-11.4 MeV, and a high-resolution 3 He spectrometer. Pronounced asymmetry around $ * 90° was observed indicating the existence of E1-E2 and possibly El-Ml interference effects.

Fig. 2. Angular distribution of the neutron group leading to the ground *2.3 keV state in 205 Pb for various incident 7

- energies. E r(MeV)

Fig. 3. Angular distribution coefficients a,/ao for the transi- tions to the ground +2.3 keV states and to the 263 keV state

in 205 Pb as a function of ETThe energy of the E2 1SGR is indicated. The solid curves are calculated [11] with the direct scmidirect model and are identified by the spin of the final sute.

FORM NSV41I

IB CV. 7-1*. 441 USCOMM-OC 2«OtO-P«4

u.s. department of cc-.iM-Pc^ NATIONAL BUREAU OF ST.'.', -z li);: PHOTONUCLEAR DATA SHEET 131
REF. R.M. Laszewskt and P. Axel

Phys. Rev. C 19 , 342 (1979)

EL EM. SYM.

Pb 206 82

METHOD REF. NO. 79 La 1 hg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE G,G ABX 1 CO D 5-8 nai-d 135

(4. 5-8.1)

-

Average elastic photon scattering cross sections were measured for mEi, *”Pb, 207 Pb.

206 Pb, T1 and Hg at excitation energies between 4.3 MeV and the neutron emission threshold, with an energy resolution in the range between 30 and 130 keV. This resolution was sufficient to determine the strengths of most of the strong levels in this energy region for “*Pb; there are concentrations of strength in a few levels near 3.3 and

7 MeV with the sum of ff(£l)T values equal to about 0.84 and 0.63 t

2 fm]

, respectively; each of these two groups of levels corresponds to only about 0.63% of the electric dipole sum rule. In the neighboring

isotopes, approximately the same amount of strength is distributed among many more energy levels; although this streneth is spread in energy more than it is in ^Pb, it remains relatively localized.

FIG. 4. *®Pb (enriched to 88% 208 Isotope); experi- mental average elastic photon scattering cross sections The solid curve is a low energy extrapolation oj rite Lorentz line which fits the giant dipole resonance.

TABLE VI. Transition strength comparison at 5.5 and 7 MeV.

~~ 5.0—6.0 MeV 6.5-7 .5 MeV

Nucleus JVrTdE(MeV mb) %*»Pb strength f<r„dE (MeV mb) VotPb strength

Bi 10.4 68% 10.7 44%

t»Pb 15.2 100% 24.4 100%

iBTpb 12.6 83% o e • aotpb 15.8 104% 20.2 83%

Tl 8.3 55% 7B 32%

Hg 11.6 76% • o • ...

form N3S-418

(R EV. 7.I4.Q4) USCOMM-N8S-OC

Ey (MeV)

FIG. 12. Comparison of the measured cross sections —

.

of, respectively, from the top, JMPb, Z0*Pb, :BTPb, Z0*Bl, Tl, and Hg.

PHOTONUCLEAR DATA SHEET 132
"«*•. T. Chapuran, R. Vodhanel , M.K. Brussel

Phys. Rev. C22 , 1420 (1980)

Paae 1 of 3

EL EM. SYM. A

Pb 206 82

METMOO REF. NO.

80 Ch 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TVRf RAN GC TYPE RANGE

G,G SPC 4-8 C 9 sen-n &ST

(8.5)

Resonant photon tattering from “J', '“Pb ud “Bi has been measured from 4 MeV to the neutron thresholds TABLE DC. Comparison of measured level widths

using enriched targets. Ge(Li) detectors and bretnsstrahiung beams with end-point energies of 7.0, 7.5, 7.6, 8.0, for Values of r„

2 /r were extracted from the

8.5, and 10.4 MeV. Energies and values of gT, 'IT were obtained for many levels not observed in previous photon P**3ent experiment assuming dipole transitions for

experiments. Spins of levels in “Pb and “Pb were determined from the angular distributions, and ground-state l«v«i 3 whose spins were not measured; uncertainties

branching ranos were obtained from self-absorption measurements for seven transitions in “Pb. The results are delude statistical and calibration errors. Parentheses

compared with earlier spectroscopic studies and with lower resolution average cross-section measurements. The in£ilcate tentative assignments; levels in brackets are

spectra of “Pb-and “Bi are discussed in terms of the excitations of the “Pb core. probably unresolved multiplets.

f NUCLEAR REACTIONS 20*..ot, 2 oS|^

) ^ !wBtfy y). enriched targets: resonance Energy* r„7r* rV/ro r0

2/r

fluorescence with 7.0, 7.5, 7.6, 8.0. 8.5, and 10.4 MeV bremsstrahlune. Mea- MeVtkeV) (eV) (eV) (eV) L rored *r. lr »t 90* and 127*, and self-absorption; deduced gT^/V, T9 /r,J. 4.115*2 2 0.58*0.15 0.30*0.06 4.329*4 1 0.43*0.11 0.90*0.09 4.604*4 0.58*0.16 0.23*0.03

4.972 *2 1 0.95*0.23 0. 8*0.3 0.8 ±0.2 5.038*2 1 2.6 *0.4 1.6* 0.6 2.3 *0.5 TABLE X. Pb angular distribution measurements. 5.470*4 0.7 ±0.2

Listed uncertainties are statistical only. 5.580 *2 1 1.7 ±0.3 0.5 f TM — 5.615*2 1 1.8 *0.4 1.0 f Energy (MeV) IP(90*)/Hr (127-) J 5.692*4 1 0.8 * 0.2 0.5 f 5.732 ±2d

1 1.3 *0.3

4.115 1.76*0.44 2 5.760*4 1 0.9 *0.2

4.329 0.69*0.17 1 5.798 *4d 1.1 ±0.3 1.0 f 4.972 0.60*0.16 l 5.816* 4 0.5 *0.2

5.038 0.69*0.06 1 5.846*2 1 1.1 ±0.2

| 5.580 0.67*0.14 1 5.857*2 1 2.0 *0.4 ( 5.615 0.81*0.13 1 5.903*2 1 3.0 ±0.6 4.4* 1.8 5.692 0.65*0.19 1 6.509 * 2* 1 1.9 *0.4

5.732 0.81*0.15 1 6.724*4 1 3.4 *0.6 5.5* 2.2 5.760 0.69*0.18 1 6.820* 2 1 4.7 *0.9 7.4* 3.0 5.846 0.73*0.22 1 7.062*4 1 2.5 ±0.6

5.857 0.66*0.09 1 7.078*4* 1 0.9 ±0.3

5.903 0.67*0.09 1 (7.127*2) 1.0 *0.2

6.509 0.74*0.17 l (7.202*4)' 1 1.8 *0.4

6.724 0.76*0.13 1 {7.310} 1 3.7 ±0.9

6.820 0.81*0.16 1 7.423*4 1 1.6 *0.4

7.062 0.80 *0.19 1 7.464*4 0.9 *0.4

7.078 0.90 *0.2S 1 7.487* 4

d 1.7 ±0.4

7.202 0.70*0.22 1 7.506 *2 (1) 1.2 *0.4

7.310 0.69*0.19 1 7.543 *2 1 2.3 ±0.6

7.423 0.84*0.26 l 7.570*4 1 1.1 ±0.5

7.506 1.11*0.54 (1) {7.815} 0.8 *0.2

7.543 0.73*0.21 1 {7.846} 1 1.9 *0.4

7.570 0.82*0.53 1 7.880 *2 1 1.1 ±0.3

7.846 0.85*0.20 1 7.891 ±4 1 1.6 ±0.4

7.880 0.88*0.37 1 7.903*4 1 2.2 *0.5

7.891 0.84 *0.23 1 7.972*4 1 1.0 *0.3

7.903 0.79*0.19 1 {8.000} l 1.6 ±0.4

7.972 0.92*0.45 1 {8.040} 0.27* 0.09

8.000 0.91*0.26 1 •This work.

b Reference 10.

c Reference 36.

ronw N8S-41I

INCV. 7*1 4. 141 UICOMM.NISOC

d May Include contribution from an additional level. ‘May be an inelastic transition; see text and Table XI

f Uncertainty reported “in excess of 50%.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUACAUOF STANDARDS PHOTONUCLEAR DATA SHEET 133
Pane 2 of 3

FIG. 12. Spectrum for 8.5 MeV bremsstrahlung scattered at 127* from an enriched (88%) *°*Pb target. One channel corresponds to 1.47 keV.

134
T. Chapuran, R. Vodhanel , M.K. Brussel

Phys. Rev. C22, 1420 (1980)

*er.

METHOD

Pane 3 of 3

EL EM. SYM.

Pb

ref. no.

206 82

80 Ch 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TVP| RAN GC TYPE RANGE

G , G SPC 4-8 C 9 SCD-0 DST

(8.5)

ENERGY (MeV)

FIG. 13. Spectrum for 8.5 MeV bremsstrahlung scattered at 90* from an enriched (88%) target. One channel corresponds to 1.47 keV.

'OHM N8S-41S

in CV. Mt-MI

USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 135

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
ref. c.N. Papanicolas, J. Heisenberg, J. Phys. Lett. 99B, 96 (1981)

method

Lichtenstadt, J.S. McCarthy ELEM. STM.

Pb

REP. NO.

A Z

206 82

81 Pa 1 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE MANSI

E,E/ ABX 4-5 D 0*3 MAG-D DST

-

*MQM,FM-1 2 E10 LEV

We report the identification of new high multipolarity transitions in 20 Pb and 206 Pb by the measurement of their form tactor. A comparison to the corresponding excitations in :08 Pb is presented.

Z06pa

1

1

n U

207Pb

h

J[J

208 pb

4.6 4.8 5.0 5.2 5.4

Excitation Energy (MeV)

Fig. 1 . Excitation energy and strength of the E10 transitions observed in 208 Pb, 207 Pb and 206 Pb. Their strength (corre- sponding to the first maximum of their form factor) is given

in arbitrary units. The open bars represent the strength at 90° and they are enlarged by a factor of 10 as compared to the

solid ones (strength at 160°)

Hg 3. do/do

N,ott at 90° and 160° for the two transitions in 208

1’b which we identify as being of F.10 character.

FOAM N3S-4IC

IP EV. 7.14°44t USC OMM.OC 24010.PE4

U.S. DEPARTMENT OF COMM£PCi

PWOTONUO.EAR DATA SHEET NATIONAC BUREAU C- STANDARDS 136
**" R.D. Starr, P. Axel, L.S. Cardman

Phys. Rev. C25, 780 (1982)

EL EM. SYM. Pb

A 206

Z 82

METMOO REE. NO. 82 St 1 hg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE

G,G ABX 9-12 D 9-12 NAI-D DST

(9.5-12) (9.5-12)

The elastic photon scattering cross sections of and 20*Pb were measured at 90* and

135* in the energy range from 9.5 to 12 MeV with a tagged photon beam whose energy

spread was about 1 25 IceV. The ‘“Pb cross section rises monotonically with energy, and

is consistent with a total photon interaction cross section which has a Lorentzian energy dependence with a peak cross section of 650 mb at 13.6 MeV and a width T=3.8 MeV.

^*c " ^ scattering cross section is larger and has some rapid variations with energy;

there is a narrow extra peak near 10.04 MeV and there are abrupt increases in the cross

section just below 10.6 and 11.3 MeV. The relative scattering observed at the two angles

indicates that all of the scattering, including the rapid variations with energy, is dominated by dipole interactions. This dipole assignment for the fine structure is important for the proper interpretation of inelastic electron scattering by w,Pb. Some of the observed

fine structure in inelastic electron scattering must be dipole; the fine structure previously

reported as being due to electric quadrupole excitation should be considered as tentative

until the correct dipole contributions are included.

NUCLEAR REACTIONS "^'^Pblyy), E =9.5 — 12 MeV; measured

aiE'.d); resolution 125 keV; observed fine structure; inferred dipole excitation.

0.3

- 0.2 A

6 us

o

<—i

1 1 ~i 1——i ”*Pb<88%l

ELASTIC PHOTON

SCATTERING i H

_ f f-U5*

t

j -90*

i

i

. f

* *

a -r*-* « -f* I i * i

* i i f * M*

i i 1 i 9.6 lO.O 10.4 10 9 11.2 ll 6 i2.0 Er(M«vi

FIG. 6. The elastic photon scattering cross sections for the enriched :o#Pb target: The significance of the symbols are explained in the caption to Fig. 5. The

lines represent the elastic scattering that would be ex- pected for a giant dipole resonance with a maximum ab- sorption cross section at 13.6 MeV. The solid line corre- sponds to a peak cross section of 514 mb and a reso- nance width of 3.85 MeV; the dashed line corresponds

to a peak cross section of 650 mb and a resonance width

of 3.7 MeV.

The values of the cross sections integrated

over angle were inferred from the data at 135* (open

symbols) and 90* (solid symbols) using Eq. (16). The circles correspond to the lower energy run (i.e., run 1 in Table I), while the squares correspond to run 2. The observed cross sections are well above the solid line expected if the photoabsorption were an extrapolation to low

energy of the giant dipole resonance. The dashed line il- lustrates the scattering that would be expected if there were additional concentrations of photon absorption, as described in the text.

FIG. 3. Differential elastic scattering cross sections

for the enriched :o*Pb target: See caption of Fig. 2 for an explanation of the symbols.

The open symbols give the values obtained at

135*, while the dark symbols correspond to 90*. In both

cases, the circles give the data obtained in the lower en- ergy range (run 1 in Table I), while the squares were obtained dunng the higher energy run. The errors are statistical.

o ie r)

foam MSS-4M

IRIV. 7-1 4.44) USCOMMM4RS-OC PHOTONUCLEAR DATA SHEET 137

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUACAUOF STANOAROS
TABLE I. Elastic scattering cross sections.

Run No. Counter

Energy

(MeV)

20»pb arr (mb)

:o*Pb arr (mb)

206pb

e V

(mb)

20»pb

c „ b arr (mb)

2

1 11.95 5.46+0.23 5.46±0.30 3.44±0.12 2.38±0.15

2 2 11.78 5.05 ±0.20 4.72 ±0.25 2.71 ±0.10 2.68 ±0.13

2 3 11.64 4.03+0.20 4. 12 ±0.28 2.33±0.10 2.30±0.13

4 11.45 4.43+0.17 4.16±0.28 1.98 ±0.08 1.98±0.12

2 5 11.27 4.98+0.19 5.01 ±0.23 2.04 ±0.09 1.59±0.10

2 6 11.12 3.45+0.16 3.05 ±0.25 1.54±0.07 1.57 ±0.10

i 1 11.00 2.22±0.22 1.71 ±0.20 1.37±0.09 1.37 ±0.1

7

2 7 10.96 2.35+0.15 2.23 ±0.20 1.33 ±0.08 1.12±0.10

i 2 10.87 2.32±0.25 1.91 ±0.18 0.98 ±0.07 1.02 ±0.1

3

2 8 10.77 2.23 ±0.1

2

2.16±0.18 0.96 ±0.06 0.96±0.08

I 3 10.75 1.92±0.23 1.78±0.18 0.86±0.08 0.96±0.15

1 4 10.60 1.98 ±0.21 2.11 ±0. 1

8

0.75±0.07 0.75 ±0.1

2

2 9 10.60 2.30±0.12 2.2 1 ±0. 18 0.82±0.06 0.85 ±0.08

2 10 10.46 1.50±0.12 1.64±0. 18 0.58 ±0.06 0.70 ±0.08

1 5 10.45 1.12 ±0. 19 1.27 ±0.17 0.61 ±0.06 0.92±0.12

1 6 10.32 0.52 ±0.1

6

0.87±0.12 0.63 ±0.06 0.59+0.10

2 11 10.32 0.86±0.1

1

0.96±0.18 0.47 ±0.06 0.49 ±0.08

1 7 10.19 0.73 ±0.1

9

0.99±0.13 0.38 ±0.06 0.52 ±0.12

2 12 10.19 1.17 ±0. 12 0.75 ±0.20 0.41 ±0.06 0.20 ±0.08

1 8 10.04 1.91 ±0.07 2.03 ±0.1

7

0.49 ±0.06 0.44±0.10

1 9 9.90 0.87±0.20 1 . 12±0. 13 0.23 ±0.04 0.42±0.10

l 10 9.78 0.56±0:i6 0.64±0.13 0.31 ±0.06 0.59±0.17

I 11 9.67 -0.02 ±0.1

5

0. 15±0. 13 0.30±0.06 0.37 ±0.1

5

1 12 9.56 0.29 ±0.1

3

0. 1 8 ±0. 17 0.22 ±0.04 0.37±0.13

'Calculated from 13S* differential cross section assuming dipole radiation. 'Calculated from 90* differential cross section assuming dipole radiation. 'Not corrected for 2.7% :o*Pb or 9.0% 207Pb in enriched :otPb target.

138
.'/v

r

>.r • /

w\ f

. . /

te

A=207

V

Rb

A=207

•./

.

'

jl39

PB - A=207

REF. M.D. DeSacza Santos, j. Goldemberg, R.R. Pietoni, B. Silva,

O.A. Borello, S.S. Villaca, J.L. Lopes

Int. Conf. Peaceful Uses of Atomic Energy II [UN, NY] 169 (1955)

EL EM. SYM.

Pb 207- 82

METHOO

Betatron; proton yield; radioactivity; r-chamber REF. NO.55 De 1 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE

G,P ABX 11-21 C 11-21 ACT1

k PI

row MBS-41S

(REV. 7-1 *-A4> U»COMI OC MOI 0-PS4 PHOTONUCLEAR DATA SHEET 141

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
.. N. GelLer, J. Halpern, and £. G. Muirhead

Phvs. iev. JJJ, 1302-12 (i960)

. E- EM. SYM.

Pb 207 82

MeTHOO

Betatron; neutron threshold; ion chamber

REF. NO.60 Ge 3 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RAN GS TYPE RANG*

G,N N0X THR C THR BF3-I 4 PI

THRESHOLD

T*BIX L of natron serration energies inferred from present threshold measurements with values predicted trow mmdata and reaction energies. All energies are expressed in the ccnter-of-mass system in Mev.

P

KtocIIihi No. runs Present results Other results Method Reference

Pb*"(7^f)PWw 3 6.790±0.023 6.734±0.008 Pb**(n,7)Pb»» e

6.75 ±0.06 mass data q

6.736±0.020 Pb**(d,£)Pb*T

t 6.722±0.012 mass data r

• P. M. Van Patter and W. Whailne. Rev*. Modern Phya. 24, 402 (1954); 29. 754 (1957). « W. H. Johnaon, Jr., and V. B. BhanoL Phya. Rev. 107". 4 U9S7).

' J. L. Benaon, R. A. Dameraw, and R. R. Rio, Phya. Rev. 115. 1105 (1959).

• J. R. Hoixensa. Physic* 21. 410 ( 1955). ‘M. T. McEUlnrea et aL. Phya. Rev. 111. 1434 (1955).

Mev ami K\

1 ylel?

0414 *°r lead from 6.7 Mev to 7 7

pobu NXIS-413

in r. v . >• * 4.A4I U.s. DEPARTMENT OF COMM r PCc

NAflONdl. mjPCd • iTAfel % AZ
PHOTONUCLEAR DATA SHEET 143
I

Ref. E.G. Fuller, E. Hayward

Nuclear Phys. 53, ^31 (1962)

Elem. Sym.

Pb 207

Ref. No. 62 Fu 4

82

Method 50 MeV betatron; BF^, Nal counters JHH

Reaction E or AE

S*

dE J rt Notes

Pb

2o6, 7,

8

(y,y)

(y,xn)

4.5-8 .

5

18.5

J =3.93 MeV-b

J corrected for multiple neutron

production.

Self-absorption measurements made

at 7 MeV.

Table I Observed transmissions corrected for electronic absorption

\bsorber Thickness

ig cm-) Pt>l7’ gem-)

Tjr*ets

•pb-'"" 0.6 ( cm-> Bi«5.97g wm-»

|

PH

. _

10.8 _ - — 14.4 1 0.663 0.032 0.846 0 049

0.895 0.031

|

"PH-*" 1 12 0694

0.976 0037 •» 0050 074 00*3

1 1 (JO’ 0 04R

Hi 12.2 1.018 0050

0.599 0.031*1 1045 0 038 0.19: 0040 1 0.719 0.038 •) - •

P* ^65 0.822 0.029 0903 0023

Ph •••• •83 0.790 0.023 0910 0.02S P* 7 86 0.797 0 028 0.915 0 028 •Pb*"

Hi

7 47

7.49

0.965 0 029

0.790 0 025

*» Measured * ith boih target and ubsorocr at liquid nnrinjen temperature

Tvbie 3 Average level parameters at 6 MeV

Lead Radio-lead Bismuth

: (0 r)“ 10 1 -400 0-64

*1 (hi 24—'8 29—205 10—48 ncv» J.l 0.13-3.1 > 0 39 imasiibl 183 205 68

. y

/* 0.13 -0 21 0.14- 1.0 0.2 - 10

<T, P <7 MeV) imbl 21 20 :i

| '•..JtlMeV mhl 42 40 «

1

SEE 1'AGE 2 FOR FIGURES.

FORM NBS-418

(S-1'831 USCOMM'OC t«S98-P«3

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 144
Fif « The iy. m cross sections for the lead isotopes near threshold. The arrows mdicate the position of me i v. m thresholds. The arrows beneath the a*is of abscissas indicate the energies of the impomn

dipole transition calculated by Balashov ft a/. The heights of the \erttcal lines are proportional t the calculated strengths of the transitions.

porm N8S-418

(8-1-631 USCOMM-OC 1 88S6-P63

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARCS

PHOTONUCLEAR DATA SHEET 145
I,

Ref. Yu. I. Sorokin, V.G. Shevchenko, B.A.Yur'ev

Zhur.Eksptl. i Teoret.Fiz. Jfci, 1600 ( 1962 );

Soviet Phys.JETP 1 6* 1127 ( 1963 )

Method 206

35 MeV Betatron - counters ( activity of Ti

Reaction E or AE E

O

Pb

207

(Y,p)T;

206 15-

33

Pb

2°8

(Y,p)Ti

207

Pb207

(Y, p)T:

206 15 .

Pb

208

(Y,p)T:

207 55

Pb

208

(Y,pn)’ ^206

Pb

2°8

(Y,d)l t206

26

26.5

r

55±20)

33

60±20 ) 33

0

Elem. Sym.

Pb

Ref. No. 62Sol

207 82

and Ti207 detected.

j Notes

Cross section obtained from

corrected yield curve.

Assumptions made on contribution of

Pb

20

®(Y,pn).Ti

2°^ reaction to

^ - contribution greatly overestimated.

0. mb

FIG. 2. Cross section of photonudear reactions in lead: 1- cross section calculated from the total yield curve. 2 —

cross section for the (y, p) reaction. __

: ^

form NBS-418

(8-i-ea) USCOMM-OC 18886-P83 PHOTONUCLEAR DATA SHEET 146

U.S. department of commerce

NATIONAL BUREAU OF STANDAROJ
REF. R.R. Harvey, J.T. Caldwell, R.L. Bramblett, S.C.

Phya. Rev. JJ6, B 126- 31 (1964)

METHOD

Positron annihilation; ion chamber

Fultz

ELEM. SYM. A Z

Pb

REF. NO. 64 Ha 2

207 82

NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G.N i13 ABX 6-27 D 6-26 BF3-I 4PI

G.2N il** ABX 12-27 D 12-26 BF3-I 4PI

207 Sample eneriched to 92.8% Pb

(y,2n) threshold 14.44- ± 0.43 MeV

I'ig. 2. Top figure shows data points for <r[_(y,n) — (y,>ip)'_ for Pb“7

, obtained from single-neutron counting data. Center figure shows data for <r(y,2n) obtained from double-neutron counting

data. Data points for the compound nucleus formation cross sec- tion of Pb317

, i.e., *[.(y,n)-r(y,np)]-i-<T(y,2n) are shown in bottom

figure. Solid curve is a plot of a Lorentz line having the parameters

given in Table II. The data are uncertain below 8 MeV owing to low beam intensities encountered.

Table II. Lorentz line parameters and <r_j values

for Pb isotopes and Bi.

Peak Width

<n r /•:„ <r_; 0.00225.4 5,1 Isotope (mb) (MeV) tMeV) (mb/MeV) (mb/ MeV)

Pb3* 525 3.75 Pb3” 485 3.87 pb

»* 495 3.78 Bi" 520 3.83

13.7 15.6±1.6 16.2 13.6 14.5±1.5 16.3 13.6 14.1 ±1.4 16.4 13.5 16.6±1.7 16.6

* .00r

SOOr

Taiile I. Integrated cross sections in McV-b, up to 28 MeV, for Pb isotopes and Bi.

Isolo|>e /

a (-, <r(y,2n)dE /> j\dE+W

0.06.YZ/A

P!*3*

2.22 0.56 2.78=0.28 3.07±0.36 2.96

. i’ll

31. 2.05 0.60 2.65±0.27 2.95±0.30 2.97 Pb" 1.96 0.95 2.91 ±0.29 3.21±0.32 2.98 Bi" 2.17 0.76 2.93±0.29

=— 147

3.25±0.33 3.00 FORM NBS-418

(R C V . 7-t A- *4) USC OMM.OC 2«0t0>P«4
REF. A. De Marco, R. Garfagnini and G. Piragino

Nuovo Clmento 44B . 172 (1966)

EL EM. SYM.

Pb 207 32

METHOD REF. NO.

66 De 2 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N SPC THR - 30 C . 30 CCH-D 0 - 15 135

Fig. 3. - Energy distribution of photon*

eutrons from Pb. The solid line has the same meaning as in Fig. 2.

form NBS-418

(RIV. 7*14.641 USCOMM.OC 2601 0* P64 PHOTONUCLEAR DATA SHEET 148

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
ref. J. F. Ziegler and G. A. Peterson

Proc. Gatlinburg Conference 319 (1966)

EL EM. SYM.

Pb

i z

207 82

method REF. NO. 66 Zi 2 hmg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

E,E/ RLX D 28-70 MAG-D DST

Fig. 1. Inelastic cross sections for the excitation of

20T Pb by 70 MeV electrons

vs. elastic scattering momentum transfer in inverse Fermi.

TABLE 1

Values of B(E3t)

Isotope Energy

level B(E3 1 ) (eV)

“*Bl 2. 58 0.527 t .012

2.58) 2.73' 0.773 t .020

,0, Pb 2.615 0.788 i .028

J0T Pb 2.621 2.66/ 0.740 t .012

,0, Pb 2.60 0.702 ± .032

2. Tuan, S. T., and Wright, L. E., Bull. Am. Phys. Soc. 1J, 338 (1966); Reynolds, J. T., Ph. D. Thesis, Duke University; Onley, D. S., private

communications.

3. Elton, L. R. B., "Nuclear Sizes, " Oxford Univ. Press, London, 1961); Hofstadter, R. f private communication.

form NBS-418

tn IV. 7-1 4-94) USC OMM.OC 26 010- PS

4

PHOTONUCLEAR DATA SHEET 149

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDAROS
I

REF. J. Fo Ziegler and G. A. Peterson

Phys. Rev. _165, 1337 (1968)

EL EM. SYM.

Pb 207 82

METHOD REF. NO.

68 Zi 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ FMF 2-5 D 28-73 MAG-D 28-73 100

Pb

E- • 70 M«V

SEP ISTOPS. B(EL)

LL

q If)

0.3 0.5 q If")

L'ig. '.4. Experimental relative crcs.> .-actions versus rr.o~er.tu..'. transferred to the nucleus normalized to an initial e.eotrrn energy of 70 MeV for excitations at aoout 2.6, 4.1, ar.c. 4.3 V 3»e\

.

The solid curve is the best ht of the Gi>l\.GVv ca.cu.utton assum.r.g

the Tassie hydrodyaamical model tor the speciued transiuoamultipolarity, and the dasned curves are arbitrarily normauzed

for other transition multipolarities.

OVER

form MBS-418

(REV. 7*14*041 USC OMM.OC 20010* P04 PHOTONUCLEAR DATA SHEET 150

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Taslz II. Zxpcrir. Cutal VA.UCS 01 rCuwkOii ittic.wAr transition probabilities £{££) for the excitation 0; a nucleus from its frn..r... StAlC JO 47. CXCUCL 575 ic As vjc»crr**..~ a t>/ l.’.C wicAUm scattering methods 01 li. 15 experiment ir 0 by other metnous. 'lac units o» ii< ire iroL where « ii lie c.octron chit,;C, 0 16 tG*'** CIS** b), ar.u £ is lac isUitipOtariiy 01 Lie transition d\LL)ip is lac 5ti* 0 .o*jya, i,c,yj CituuCUC Ot Li). (10).

Ti.ii experiment

£(££) Other experiments

Ct Transition £(££• 0—*£) G- £,££. 0 — L) N uCtiuC (McV) CuMtiCtcr fc’w** £x££).. n • 1\C| c-jL ?b=* •i.ul) £2 0.25=0.62 • 6.2 4 xPu’/O.OO Pb*7 «i.o 4.123*, £2 0.26=0.02 7.0

Cd

i'n,«';0.33 (P.P'/O.IS

P’o74* •i.07 £2 0.50=0.02 S.1 c fo,a'/0.35 c l>, p',0.17 Pba* 2.65 £5 0.64=0.04 33 4 0>,p')0.33 Pb“7 2.623"\

2.664*/ £5 0.67 3=0.04 37 cd

(r»^n

# }0.56

(P,p

, /0.32 ?b“* 2.614 £3 0.72=0.04 59.5 c io,a')0.57

; (c, o'; 0.53

iT (p,p'}0.67 c p'10.36 h (Cu,C;77/0.83

i (pij ; /O.i**

j (p,p';0.97

•1 . \nt t0 j 0.7 4 3?*• 2.6* £3 0.67 3=0.05 37 c (ot.a'/O.oT

ini (p,p')0.o5 Pb

--** 4.32 £4 0.22=0.02 23 a

i*baT 4.29 £4 0.2i=0.u5 97 c (a,a'/0.12 ?b“* 4.31 £, 0.25=0.02 26 c (a.a'/O.lO

(c’,c

/ )0.24

0 (p,p'y0.057 Pb44* 5.25 /v3 0. 13 3=0.03 7.2 0.143=0.07 16 Pba« 5.6 £3 0.09=0.05 5 c (a,a')0.16 PUa* 0.2 0.07=0.02 2

(£0) Pb444 5.2 £5 0.06=0.02 14 c («,or, 0.03

c ;p,p')0.034

• G. V»u«)i», J . Snr.d.: as. an». O. Leer, i •i'/i. Letter.* 2*1. 5 2 ,1967).

® I*o.irCa vvcre r.wi revived «n ta;> experiment. Li.er;;ci ;.. .11 irorn C. Illicit and K. Woods, Pliys. Letter* 24, 579 (1966).

• ALtcr, Pay*. Lev. 141, 1156 (la*6ij ?;,>•*. Letter* laL 459 (1967).

• y* y*»La;s. J. Sa.-.i.ir.Oj, G. Leer, .‘.I. Gor..,.-.:. P. Lopato. ?ny«. Letters 22, 659 (1966).

•

: 5>ar.c:r»o?, G. Vr,.L»J, p.Jiccr, M. Gerdrot. aat* I*. Lop-to, P‘,»ys. Letter * 22, 492 . 19<»6).

• it. Crar.ncL. i\. Loir:, 21. Lcr.^a.i, j. G» »er. a;.*; M. Ycarian, Pay*. Aev. 125, 925 v»96i) ; and n. W. Kendall ar.u J. Ocser. »6id. 150, 245 (1965).

• A. Scott and M. ?. yricltc, ?..ys. Letters 20, <»54 vlvCO).

• A. Z. f..--/.U.c\vicz, S. Kopta. S. Szy.T.cjy*;. ana T. Walczak, Naci. Pays. 79. -.95 (1966). reierencet cited tncrein. ana see text oi tni9 section.

• G. K. 6~:c.*lcr, t<. r;. J.isict. ar.L &. .M. Gr.s«co. Pliys. Letters 5, 256 (1965/.

• 7. Stova.. ar.a X. M. riiatz. Pay*. Kev. 155. 5550 (l964/.

• ?. ii. Stetson c< a*.. NjC*. ?i»ys. 66. v7 ,1965).

4 Approx.n.-te energy o; seven unresolved pea-s. J. C. liaicie and H. Woods. Pisys. Letters 24. 579 (1966). • 5. Hinas. H. Marcnanc, J. H. L;erregaard. ana O. Nataan, Pays. Letters 20. 674 (1966).

151
C. 0. Bowman, B. L. Berman, and H« £. Jackson

Phys. Rev. 1827 (1969)

c.u c.m. i r r

Pb 207 82

METHOD REF. NO. 69 Bo 1 hmg

REACTION RESULT

EXCITATION energy

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N SPC THR-9 C 7-9 T0F-D 135

Tabular data given. G- WIDTH

Table VI. Resonance parameters.

Isotope Hus

work

Energy in (n, y) b c This work d *rt c b

Spectroscopic data b d

Pb**

(keV) 3.00

(keV) (keV) 3.02

(eV) 0.08*0.03*(eV) (eV) 0.078*0.005

(eV) l 7*

10.4 10.2 0.06*0 02 0.13±0.02

16.6 16.7 16.2 0.14*0.04 0.66*0.07 0.3*0.07 (>0) (2+) 25.3 <0.2

29 29.5 <0.4 0.20*0.06 0.35*0.13 (>0) (2+) 37 37.6 <0.4 0.7±0.1 <>0) (2*) 40.9* 41.7 41.0 4.13 4.13 3. 8*0.4 *. 13*0.9 0 (1-)

Pb* 3.4 3.36 0. 14*0.03 0.077*0.006

10.8 <0.05 0.06*0.01

11.4* 11.3 0.54*0.08 0.07*0.02

12.3 12.2 0.05*0.03 (>0)

14.6* 14.2 0.55*0,10 0.20*0.04

16.6* 16.5 16.5 0.63 0.63*0.03 0.70*0.08 0.8*0.12 (>0) a~:

20.1 19.6 0.169*0.08 0.32*0.06

21 21.8 <0.05 0.28*0.1 0.18*0.07

25.1 25.1 24.9 0.4*0.15 0.28*0.03 1. 1*0.2 0.77*0.12 (>0) (I-) Pb»" 1.55 7.34

10.2 16.0 33.6

49.9

0.40*0.06 3.4*0.30

1.0*0. 15 0.50*0. 15

* The statistical factor I is different depending on whether neutrons or photons excite the nucleus. To make easier a comparison of the results, the present values for Pb“* and Pb*’ have been multiplied by the ratio (2/' + 1 )/ (2 /" + 1 ) where /' is the spin of the target for the photonudear experiment and /" is the target spin for the inverse experiment. The Pb*** values are unmodified.

k Reference 4.

* Reference 6. 4 Reference 7.

* The uncertainties in the values for g 1%. for all isotopes do not include a ±15% uncertainty in normalization.

* The present data were normalized at these resonances using the data from Ref. 7. * These peaks are associated with transitions both to the ground state and the first excited state of Pb“. The exdted-state transitions are the stronger (see text). k For Pb“. the energies have not been transformed into the (g. 7) system. form NBS-418

(R C V . 7-14-041 USCOMM-OC 200I0-P04 PH0T0NUCLEAR DATA SHEET 152

. DEPARTMENT OF COMMERCE — . . JNAL BUREAU OF STANDARDS
r\ &r . £i_£M. STM. A C. D. Bowman, R. J. Bag lan, and B. Phys. Rev. Letters 2^, 796 (1969)

METMOO

L . Be rman

Pb 207 32

REF. NO.

69 Bo 4 hrag

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N ABX THR-8 D 8 TOF-D 135

Erratum attached:

Phys. Rev. Letters 24, 193 (1970)

Exsllartsn energy — MeV

Neutron energy — WeV TIC. 1. ^Threshold photoneutron cross section In mb/sr for natural load dortvod from the neutron spoctrum emitted at 136* ss s function of both laboratory neutron onorgy and lncidont photon energy. Levels not Pb20' are designated by vertical arrows. [over

foam HBS-419

<R IV. 7* 1 4* 44) USCOMM.OC 2S0 t 0* P64 PH0T0NUCLEAR DATA SHEET 153

U.S. DEPARTMENT OF COMMERCE

national bureau of standards
FIG. 2. The data of this figure are taken from Fig. 1. The solid curve is a shape fitted to the data using the resolution determined from the narrow peak at 37.3 keV. The spins for the 37.3- and 40.7-keV peaks are

2

* and 1“, respectively (Ref. 14), so there is no Inter- ference between them.

154
REF. C. D. Bowman, R. J. Bag lan, and B. Phys. Rev. Letters 2£, 193 (1970)

METHOO

L. Berman

ELEM. SYM.

Pb 207 82

REF. NO.

70 Bo 1 hmg

reaction RESULT excitation

ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

g t n ABX THR-3 D 3 TOF-D 135

ERRATUM FOR 69 BO L

PRL 22, 79o (1969)

form NBS-418

(MCV. 7<14.«4) USCOMM.OC 2«010-P«4 PHOTONUCLEAR DATA SHEET 155

U.S. DEPARTMENT OF COMMERCE

NATION AL BUREAU OF STANOAROS
I

REF. R» J. Baglan, Co D. Bowman and B. L, Berman

Phys. Rev. 672* ( 1971)

ELEM. SYM.

method

! Pb

j RE F . NO.

j z

207 82

Page 1 of 3 71 Ba 2 hmg

RESULT EXCITATION SOURCE DETECTOR

REACTION ENERGY TYPE RANGE TYPE RANGE

ANGLE

G.N ABX 6-10 C 7-10 TOF-D 135

(6.73-9.S)

Excitation Energy (MeV)

FIG. 4. The 135* differential threshold photoneutron cross section for 2nPb at low energies versus the energy of the emitted neutron (lower scale) and the excitation energy (upper scale). The arrows Indicate peaks which decay to excited

states of the residual nucleus (ES), or peaks owing to contaminating isotopes in the photoneutron sample. Tbs inset shows the JMPb(r,n) cross section averaged with a square 40-keV wide smoothing function.

Also see:

R. J. Baglan et al.

Phys. Rev.

2475 (1971) —^

[over i form NBS°418

(REV. 7-I4-64) USCOMM.QC 26010.P04 PHOTONUCLEAR RATA SHEET 156

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARD*
TABLE IV. Resonance parameters for :o, -- M>

:i),i pb. For all resonances, the area under the peak In the 135’ differential cross section is multiplied by 4» to yield approximate values (or gr r yarm /r “g'yf'y,. For those resonances where J* is known, the differential area is multiplied by the appropriate factor F from Table I to obtain r f0 . Et

is the laboratory neutron energy for the <y ,*) reaction and Em

is the corresponding laboratory neutron energy for a neutroninduced reaction. Column 5 labels the peak as a ground-state ICS) or excited-state (ES) transition as determined in this work alone. Clearly, if a peak is seen in a neutron-induced reaction (columns 9—11), it must be GS. For excitedstate transitions, ;r rrtr./r is computed as if the residual nucleus were left 'n its first excited state (second, for :MPb)

with the use of the multiplicative factor from Table II.

Nucleus (keV) (MeV)

*r r ror./r

(eV)

GS

orES J'

r ro (eV) £„ (keV) (Thia work)

£„ (keV) from neutroninduced reactions

(Ref. a) (Ref. b) (Ref. c)

»»Pb 3.3 d 6.738 0.07 GS d 3.4 11.2 d 0.054 ES d

12.1 d 6.747 0.03 GS d 12.3 14.3* 0.34 ES*

16.2* 6.751 0.21 GS J- 0.42 16.5 16.5

19.8 d 6.755 0.08 GS d 20.1 24.9* 6.760 0.71 GS i- 0.81 25.3 25

35.8 6.771 0.97 i- 1.1 36.4 35

40.7 5.0 ES

43.1 6.780 1.2 v 1.3 45.8 46

65.7 6.801 1.6 GS **• 3.2 66.6 68

76.1 6.811 1.1 GS 77.1

82.6 6.818 1.1 83.8 85

90.0 6.825 3.1 GS 91.2

92.5 6.828 0.88 93.8

97.0 6.832 0.30 98.3

114 6.849 0.82 GS 115

125 6.860 6.6 GS 127 126 133 6.368 0.36 135 140 6.876 4.0 GS 142

146 6.381 2.9 GS 148

159 6.395 1.1 161 161 168 6.904 0.78 GS 170 175 6.911 0.78 GS 177

196 6.932 1.9 GS 198 198 197

198 6.934 2.8 GS 200 205 6.941 0.63 r

b 1.3 208 207 217 6.953 0.57 i* b 1.1 220 219

234 6.970 1.9 GS 237

242 3.1 ES

253 6.989 2.4 GS i*

b 4.7 256 256 276 7.012 6.3 GS 279 278

301 7.038 2.8 305

342 7.079 4.7 rb 9.4 346 348

350 7.087 5.1 r

b 10.3 354 355

356 7.093 4.2 360

374 7.111 0.88 r

b 1.8 379 383

391 7.128 2.9 r

b 5.8 396 396 407 7.144 4.0 GS 412 416 7.153 4.7 GS i*

h 9.5 421 422

426 7.163 4.1 GS 431 454 7.191 2.5 459 460

466 7.204 4.2 472 473

488 7.225 0.94 i*

b

1.9 494 495

503 7.241 4.7 509 511 523 7.261 3.7 529 533 3.4 ES

543 7.281 1.5 r

b 2.9 549 550 572 7.310 8.5 GS 578

i) o^C.D. Bowman, B.L. Berman, r.r.d H.E. Jackson, Phys. Rov. _ 1 ?3 , 1327 (I9 d9 )»

kj.A. Bif^rstaff

, J,F., Five’, J.':. C '. c and W.M. Good, Phys. Rev. 154, 1136 ( 1 ?

7 }

.

**10J.A. Farrell. G.C. Kyker,Jr., E.C. Eilpuch, and H.W. Newson, Phys. Letters

.J7, 236 (1965).

; 13

E.G. Bilpuch, K.K. Seth, C.D. Bowman, R.H. Taoony, R.C. Smith, and H.W. Newson,

Ann. Phys. (N.Y.) jL£, 387 (19-1/.

Pane 2 of 3

157
SEF- R* J® Baglan, C» D. Bowman and B. L. Berman

Phys<> Rev. CJ, 672* (1971)

| ELEM. SYM. I A

Pb 207 32

MFTHOO

Pane 3 of 3

RE p. NO.

71 Ba 2 hrag

EXCITATION ENERGY

SOURCE detector

REACTION RESULT TYPE RANGE TYPE RANGE

ANGLE

FIG. 5. The 135* differential threshold photoneutron cross section for ,,7Pb„ at high energies {see caption to Fig. 4). The 10 unlabeled arrows above the data indicate the positions of J

w - i* states obtained from the neutron total crosssection measurement on

:#*Pb.

FIG. 4. The 135* differential threshold photoneutron cross section for J0TPb at low energies versus the energy of the emitted neutron (lower scale) and the excitation energy (upper scale). The arrows indicate peaks which decay to excited

states of the. residual nucleus (ES), or peaks owing to contaminating isotopes in the photoneutron sample. The inset shows the l0, Pb(y,s) cross section averaged with a square -10-keV wide smoothing function.

FORM NBS-418

(R EV. 7.1 4. 44) USCOMM-OC 26 0 1 0* PQ4

U.S. OEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTQNUCLEAR DATA SHEET 158
REF. K. Shoda, A. Suzuki, M. Sugawara, T. Saico, H. Miyase, S. Oikawa

Phys. Rev. C_2 , 1999 ( 1971 )

ELEM. SYM. 4

Pb 2C"

METHOD RE C . NO.

71 Sh 2 hrag

REACTION RESULT EXCITATION energy

SOURCE OETECTOR

ANGLE

Type range TYPE RANGE

E,P ASX 12-14 D 19-21 MAG-D 7-16 125

( 125 . 5 ,

Tho radiative widths of tho £1 transition through the ground lsobarlc analog states of 29tT1 and :MPb In JM Pb and respectively. were determined from the cross section of the reaction. The results arc 98 and 140 eV, respectively, after the correction for the Interference from the continuous part of the reaction . They correspond to an effective charge of 0.56 and 21, respectively. The £1 matrix elements were determined and used for

the estimation of d matrix elements |»f“/r"| . The result Is 0.055 In natural units •1) for the d -decay wTK3s„,'1 )- ^PbOp,/:”*). In the case of : ”Pb(2 ft/ ^- JMBia*,/ 2). the result is 0.043, which is much larger than the theoretical estimate. For the £1 lsobarlc analog states of the first excited state of M*Pb In

J0*Bl, the radiative width and the effective charge were also determined to be 170 eV and 0.46. respectively.

20.0

0262 0

206

Tl

FIG. 1. The level diagram for the relations of £1 IAS and 0 decay. The energy levels are Indicated in units of MeV. The single-particle configurations of the relevant states are Indicated.

r over

foam NBS-418

IR E V. 7-1 4-841 USCOMM-OC 28010-084 PH0T0NUCLEAR DATA SHEET 159

u.s. department op commerce

national bureau op stancap^*
TABLE I. Radiative widths of £1 IAS U> 2r,Pb and I#*Bi. The errors include statistical uncertainties only.

Nucleus Ground

stats IAS (MeV) r?

(eV)

r‘

rAS

(eV) 2cr+i)r^“

(keV)

WAS

2(T + l)t£-

WAS

2(r + iW-a «p

»»Pb j (Vi/j

-1

) 19.6 160*50 98*30 4.4 *1.3 0.25*0.08 0.32*0.09

**Bi fttw 18.7 180*20 140*20 6.3*0.8 0.40*0.05 430*55

**BI f"UAVJ) f<K,«/*> 19.5 220 * 30 170*20 7.6* 1.0 0.43*0.06 0.21*0.03

Mid**

FIG. 3. Cross sections of the niPb(i,*'p) and

2'*Bi(e,«» reactions at 0-125.3*. The positions of the IAS are shown by arrows.

FIG. 2. Examples of the proton energy distributions. The positions expected for the maximum end-point ener- gy of the protons are shown by the dashed vertical arrows. The solid vertical arrows indicate the position of p o through the ground IAS.

160
REF. £l EM. SrM. K. Shoda, M. Sugawara, T. Saito, H. Miyase, A. and J. Uegaki

PICNS-72, 321 Sendai

METHOO

Suzuki, S. Oikawa,

Pb

REF. NO. 207 82

72 Sh 10 hvm

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,P ABI 19 C 17- 21 MAG-D UKN

(19.51

•

I A STATES

Table 1. Examples of radiative width of IAR obtained from (e,e'p) experiment in lead region.

The result from 209 Pb(p,Yo ) are also shown with

parenthesis. (Ref. (5))

Nucleus Ground Ex Nucleus

Scate

lAb (MeV) (e$j

pA

2 (T+l)

* w

rA 2(T+l)iI—

isp

2 0 7 Pb 3PT/ 2 3*7/2 19.6 98±30 0.25±0.08 0.32+0.09

20, 3i lh,

j j 2 *9/2 18.7 140±20

( <10 ) 0.40+0.05 430±55

( V3.33 ) 20, Bi lh»/* lin/2 19.5 170+20

( M90 ) 0.43+0.06 0.21+0.03

( 0.20 )

5 K. A. Snover, J.F. Amann, W. Hering, P. Paul,

Phys. Letters 37B , 29 (1971).

form N3S-418

(R EV. 7-1 4-64) USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 161

U.S. DEPARTMENT OF COMME = NATION *L BUREAU OP” STANOAK
G„ P. Swann

Nucl. Physc A201 . 534 (1973)

REF. EL EM. SVM. A Z

Pb 207 82

method REF. NO.

73 Sw 4 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,G LPT 7 D 7 SCD-D UKN

7 = 7.19.7. 21

Table I Summary of observed levels in 20 *Pb, 20T Pb and 20<> Bi and some of their properties Nucleus £y (keV) Spin r0,r 9r0

2/r

(eV) r0 (eV) s.p. estimate (W.u.)

present ref. 3

) ref. 2

) El Ml

20*Pb

2°7pb

20 *Bi

7071 ±2

7091 ±2

7I86±5

7206 ±5

7179=5

7202 = 5

1

1hi

hi

h h*

hh ¥

i

i 15=4

25 ±5

24±5

30 ±5

31—3

17 = 2

15

15 30=13

0.036 4.4 0.019 2.3

Weisskopf units given are based on our data.

form N3S-418

(R EV. 7-1 4.641 USCOMM-NBS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PH0T0NUCLEAR DATA SHEET
C. P. Swann

PICNS-73, Vol.I, p. 317 Asllomar

ELEM. SYM.

Pb

A

207

z

82

METHOD REF. NO.

73 Sw 13 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,G LFT 3- 5 C 5 SCD-D DST

Table: Pro pert

i

es of St ates Observed tn

206.-207.203pb and i0 '8i

J-PI, 7 LEVELS

Nuclei E Y

r Q /r 1 0 G(El) G (Ml ) (keV) (eV) (eV)

3742 1 l 0.13(2) 0.001 0.12

206 Pb 4114 2 +

i 0.30(5) 5 4326 1 l 0.90(9) 0.004 0.56

4602 1 l 0.23(3) 0.001 0.12

3300 1/2* a) 0.039(6)

3928 (3/2") 1 0.53(7)

4104 3/2" l 0.55(6) 8 207 Pb 4140

4627

5/2"

1 /

2

+ b)

l

1

0.46(5)

0.54(7)

6 0.003

4372 1/2, 3/2 1 3.6(5) •vO .01 M .2

4982 1/2, 3/2 1 4.0(5) ".0.01 n.1 .2

208 Pb 4087 2 +

l 0.49(5) 7 4843 1 1 5.1(5) 0.02 2.3

2826 5/2" ( .63)

c;1 0.09(1 ) 3977 5/2--13/2 0.82(8)

4085 5/2" —1 3/2

“ 0.23(3) n.5 4144 ii 0.07(2) n.1 209

Bi

4155 II 0.21 (4) n.3 4175 li 0.21(4) n.3 4206 II 0.25(3) "*4 4747 7/2 —1 1/2 2.9(5) n.0.013 n.1 .4 4784 li 2.7(5) n.0.012 %1 .3 4822 II 1.4(3) '-0.005 "-0.7

a ) see ref . 3 b ) s ae ref. c ) see ref. 5

FOAM N3S-418

l«CV. 7-1 4-64) USC OMM-N0S-OC

J ) Sri’ th > p - 2 - p-oos, C. "oazed and A . M . Bernstein, Nucl . P'rvs

A]_7 3 , 32 ( 1 97 i )

.

R - A - "ay ar. 3.L. Cohan and P. . C . Diehl, Pt.ys. Rev. C2, 18S3 (1970).

5) P..-. jroglia, J.S. L i 11 ey , R. Perazrao and W.R. Phillips, Phys. R = v

' Cl, 1 " 33 (1970). 163
L.R. Medsker and H.E. Jackson

Phys. Rev. C£, 709 (197*0

. C..V1 . o t M.

Fb 207 82

METHOD REP. NO.

7U Me 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N SPC 6- 9 c 7, 9 TOF-D DST

TABLE IV. Neutron resonance energies and parameters for states in mPb with </'=§*. The E„ (n.y) in column 2 were calculated from the measured E„(y,n).

:07 Pb(y,a)

EntY.n) Obs.

(keV)

I0, Pb(«,y)

E„(n.y) En Calc. (±0.2%)

(keV) • (keV)

20T Pb(y.»)r r

» n‘»

r R (90*/135*) (eV)

82.8 83.9 1.30 ±0.35 0.11 175 177 1.37±0.29 0.28 233 235 1.36 ±0.09 1.4 260 263 1.31x0.19 0.8 267 271 (2.03) 0.8 289 293 291.2 1.38±0.18 0.7 305 309 305.6 1.43 ±0.22 0.5 338 342 1.49± 0.11 0.8 355 359 358.8 1.39± 0.18 1.4 395 400 402.2 1.30 ±0.24 1.0 448 453 ' 455 1.53 ±0.17 2.1 461 466 469 1.30 ±0.13 3.2 467 472 474 1.48 ±0.26 1.1 485 490 493 1.48±0.26 1.1 54C 546 549 1.36 ±0.19 1.1 586 593 (2.21) 0.9 592 599 1.53 ± 0.11 2.6 603 610 612 1.65±0.10 6.5 646 654 1.36±0.07 5.9 657 664 1.68 ± 0.20 1.0 663 670 1.37 ±0.29 0.9 670 677 1.54 ±0.11 3.9 679 687 1.65 ±0.36 0.8 711 719 1.39 ±0.13 2.2 726 734 1.44 ± 0.14 0.5 741 749 1.40 ±0.11 3.3 755 763 1.40 ±0.09 4.0 790 798 1.55±0.19 1.2 899 909 1.40 ±0.20 1.1 912 922 1.45±0.21 1.1 928 938 1.40± 0.19 1.4 965 976 1.30 ±0.17 1.7 982 993 1.46 ± 0.17 1.8 1047 1059 1.50 ±0.24 2.1 1107 1119 1.71 ±0.23 2.0 1122 1134 1.58 ± 0.16 3.5 1194 1207 1.38 ±0.16 3.2 1260 1274 1.65±0.18 4.6 1293 1307 1.36 ±0.24 1.9 1343 1358 1.30 ±0.21 3.0

<r ©

it Total 77.3

J-PI G-WIDTH

TABLE n. Energies and parameters for s -wave

resonances in the 2MPb(»,y) and mPb(y,n) reactions. The En (n.y) In column 4 were calculated from the measured E„(y,n).

M,Pb(e,y) M,Pb(y^i) £. 8 E.(».y) r r

(±0.2%) r; Calc. Oba.

(keV) (keV) (eV) (keV) (keV) Jt (90V135*) <eV)

66.0 0.97 66 85. 0.91 ±0.10 1.8 206.0 2.64 204 202 0.94±0.U 0.5 218.5 1.82 219.1 216.4 0.95.0.13 0.4 255.5 2.97 255 252 0.83 ±0.13 0.17

(346) 346.0 13.60 345 341 1.04 ±0.16 1.6 352.6 353.5 6.73 351 347 1.06 ±0.18 5.6 378.5 381.3 4.70 ... ... ... ... 395.2 394.8 7.64 ... ... ... ...

(418) 420.0 7.72 420 415 1.06 ±0.14 2.5 493.0 493.3 12.53 (495) (490) (0.4) 549.0 548.7 7.29 (548) (541) (0.7) (617) 618.5 5.09

(658) 661.5 0.92 ... ... ... ... 681.2 1.21 ... ... ... ... 725.0 2.35 726 718 1.10±0.17 5.9 s =•10 Total 19.6

* Reference 9.

b Reference 5.

TABLE VI. Integrated strengths of excitations to states with spin and parity J*. N is the number of states observed. The first three entries are for E„ £ 717 keV.

J

Multipolarity N (eV)

El 10 9.8

2 * 2 Ml. Ml +£2 45 89.5

i* El. Ml 40 77.3

/ l* 3* E„ >717 keV •) - El, Ml. Ml +E2 8 35.1

l 2 Ml +E2 4 17.2

form N3S-418

(R EV. 7-1 4-64) USCOMM-OC 26010-P04

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 164
TABLE HL. Energies and resonance parameters for

states below 718 IceV with JTmj~ and §“. The Em (« , y) In column 2 tore calculated from die measured E„ (y,n).

a7Pb<yt s) “*Pb(s.y) mPb(7,«)

•E, (* . y) £,*

jr r-.r- Obs. Calc. (*0.2%) g -T~

(keV) (keV) (keV) ft (90V135*) <eV)

16.2 16.5 0.87*0.12 0.22 24.8 25.2 1.09*0.30 0.15

92 92 0.84*0.14 0.8 114 115 1.18*0.27 0.33 123 125 1.14*0.07 5.4

139 141 1.23*0.10 2.1 145 147 0.91*0.08 2.5 168 170 1.31*0.25 0.31 172 174 0.89*0.16 0.3 197 199 0.99*0.06 4.0

215 218 0.89*0.09 0.3 226 229 1.12*0.10 0.4 240 243 0.98*0.08 0.7 256 . 259 1.20*0.15 0.4 263 266 267.1 1.28*0.20 0.5 274 277 277.6 1.09*0.10 4.0 278 281 1.28*0.30 0.7 297 301 1.23*0.11 1.5 311 315 315.7 1.22*0.14 0.6 333 337 1.22*0.1

2

0.9

344 348 350.0 1.05*0.24 1.0 351 355 1.09*0.10 1.5 367 371 1.09*0.21 0.8 383 387 1.11*0.16 1.4 403 408 (408) 1.00*0.12 1.5 409 413 0.91*0.26 0.8 412 417 418 1.17*0.10 2.6 422 426 429 1.25*0.08 5.8 429 434 436 1.13*0.12 2.1 437 442 440 1.14*0.18 1.5

451 456 1.12*0.14 1.2 516 522 0.97*0.11 2.1 526 532 528 0.97*0.12 1.7 544 550 0.86*0.19 0.5 560 566 1.04*0.13 1.3

567 573 576 0.96*0.05 7.7 575 581 1.15*0.17 1.3 600 607 0.93*0.09 2.1 616 623 619 1.20*0.09 2.5 622 629 631 1.25*0.07 5.9

630 637 1.10*0.05 10.7 642 649 1.13*0.14 1.4 686 693 1.28*0.15 0.8 698 706 0.97*0.10 2.8 704 712 1.28*0.12 2,2 N-45 Total 89.5

* Reference 9.

TABLE V. Neutron resonance energies and parameters for states In I#7 Pb with J* and §” and with En > 717 keV. The E„ (« ,y) were calculated from die measured E„(y,n).

E„(y,n) En (n, y) „ TySn

Obs. Calc. g~T~

(keV) (keV) R (90*/135*) (eV)

764 772 1.05*0.05 6.8 778 787 1.13*0.07 4.2 801 810 1.19*0.09 2.8 845 854 1.14*0.12 8.0 869 879 1.21*0.06 3.0 881 891 1.04*0.10 4.5 940 951 1.09*0.10 2.7 1015 1027 0.88*0.09 2.8 1030 1041 0.95*0.09 3.8 1069 1080 1.26*0.08 7.2 1095 1107 0.75*0.07 3.9 1165 i.177 1.16*0.13 2.6 * n •“4 CM Total 52.3

TABLE VII. Integrated strengths ^ryo and reduced

widths h for Ml transitions in 201 Pb and mPb.

2*70 (Ml) * HI Isotope Experiment Calculated Experiment Estimate*

20.pt, >51 eV b 100 eV >0.12 0.02

207 Pb >125 eV 200 eV >0.25 0.02

* See Ref. 15.

*> See Ref. 2.

2

C,D. Bowman, R.J. Baglan, B.L. Berman,

and T.W. Phillips, Phys. Rev. Lett. 25., 1302 (1970).

5J.A. Farrell, G.C. Kyker, Jr., E.G. Bilpuch,

and H.W. Newson, Phys. Lett. L7, 286 (1965).

9

B.J. Allen, R.L. Macklin, C.Y. Fu, and

R.R. Winters, Phys. Rev. C7^, 2598 (1973).

15

L.M. Bollinger, in International Symposium

on Nuclear Structure, Dubna, 1968 (International Atomic Energy Agency, Vienna,

Austria, 1969), p.317.

165
REF. C . P . Swann

J. Franklin Institute 298, 321 (1974)

EL EM. SYM.

Pb 207 82

METHOCI REF. NO.

74 Sw 11 egf

SOURCE OETECTOR

REACTION RESULT ANGLE ENERGY TYPE RANGE tyre range

G; G LFT 3- 5 C 4-5 SCD-D DST

7 LEVELS 3300-4982 KEV

Table II

Properties of states observed in and iMBi; O(EL) and G(Ml) are the reduced

transition probabilities in Weisskopf units

Nuclei Ey

(keV) J• r,/r

?r*/r

(eV) r.

(eV) ff(EL) G(M1)

40*Pb 3744 1- i 013 (2) 0 001 4114 2+ i 0-30 (6) 5 4330 1+ i 0-90 (9) 0-56 4606 1 i 0-23 (3) 0 001 012

4974 1 i 0-8 (2) 0003 0-32 5038 1 i 2-3 (5) 0007 0-90

so?Pb 3300 1/2+* 0 039 (6) 3928 3/2- i 0-34 (4) 4104 3/2“ i 0-55 (6) 8 4140 5/2- i 0-46 (5) 6 4627 l/2+

t i 0-64 (7) 0 003

4872 1/2-, 3/2- i 3-6 (5) ~l-2

4982 1/2- 3/2- i 4 0 (5) ~l-2

*o.Pb 4087 2+ i 0-49 (5) 7 4843 1+ i 51 (8) 2-3

s"Bi 2826 5/2" (0-63): 0 09 (1) 3977 5/2-13/2 0-82 (8) 4085 5/2--1U/2- 0-28 (3) ~ 5 4144 5/2_—13/2— 0-07 (2) ~ 1 4156 5/2_—13/2— 0-21 (4) ~ 3 4176 5/2--13/2- 0-21 (4) ~3

4206 5/2--13/2- 0-25 (3) -4

4747 7/2-—11/2- 2-9 (5) ~l-4

4785 7/2-—11/2- 2-7 (5) ~l-3

4822 7/2——1 1/2“ 1-4 (3) ~0-7

* See Ref. (11). | See Ref. (12). * See Ref. (7).

7C.P . Swann, Phys. Rev. Letts.

32, 1449 (1974)

.

11

S.M. Smith et al . , Nucl. Phys.

A173 , 32 (1971)

.

12

R. A. Mayer et al., Phys. Rev.

C2 , 1898 (1970).

porm N3S-418

<R EV. 7-1 4-041 USC OMM«N 8 S-O C

U.S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS PH0T0NUCLEAR DATA SHEET 166
J. E*. McFee, W. V. Prestwich, T. J. Kennett

Phys. Rev. C13 , 1864 (1976)

ELEM. SYM. A

Pb 207 82

METHOD REF. NO.

76 Me 3 hmg

REACTION result EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,N ABX 8- 9 D 8-9 ION-D 90

The photoneuiron spectrum of natural lead has been observed for photoexcitation energies of 8999, 8533, and

8120 keV using a high-resolution 3 He ionization chamber. The photons were obtained from the (n,y) reaction on * TMckd target positioned in a nuclear reactor. The Q values for the three reactions ““PM?, n)J07Pb, 207 Pb- 8999,8533,8120 KEV

(y, n)TM*Pb, and J0*Pb(y. n)”5Pb have been determined and are, respectively, 7369 ± 5, 6743 =fc 3. and 8087 ± 3 keV. Neutron groups corresponding to different final states following excitation by one of the three photon components have been observed and their partial cross sections are reported. The distribution and some

systemstics of the neutron reduced widths have been studied. The absolute cross sections of the reaction w*Pb('y, n)J07 Pb at 8999 and 8533 keV photon energies have been found to be 6.8 ± 2.9 and 5.0 * 2.1 mb, respectively.

TABLE V. Reduced widths contrasted with spectroscopic factors.

Residual

nucleus (keV) J

w £1 £2

Neutron Reduced Width

3

£y = 8999 keV £y = 8533keV £y = 8120keV

(±27%)

Spectroscopic factors dS/dJ* 1) (P.d) ( d.t

)

M nTc

r

b b 0 f

7 0 1 163 12S 0.72 0.71 570

5* 7

2 1 210 309 0.90 c 0.97 c

898 • 3,- 0 1 191 327 1.27 1.33 d

t« Pb 0 0* 0 1 26 107 321 0.30 ...

803 2* 0 1 959 308 0.11 • • • 1165 0* 0 1 294 118 0.19 .. . 1460 2* 0 1 152 e 0.38 ... 1634 4* 2 1 474 e 0.02 c ... 1704 1* 0 1 285 0 0.38 ... 1784 2* 0 1 178 e 0.07 ...

205pb 263 I’

2 0 1 190 e 1.02 f 1.56 r

* Minimum possible neutron angular momentum for a given photon multipolarity.

b Reference 18. 'Spectroscopic factor fori, = 3. All others are /,= 1. d W. A. Lanford and G. M. Crawley, Phys. Rev. C 9, 646 (1974).

e May exist but cannot be resolved from neighboring components.

f K. Yagi, T. Ishimatsu, Y. Ishizaki, and Y. Saji, Nucl. Phys. A110. 41 (1968). fR. Tickle and J. Bardwtck, Phys. Rev. 178 . 2006 (1969).

TABLE VI. Absolute photoneutron cross sections.

Target

Isotope Photon energy

(keV) Cross section 1 (mb) Lower bound 1 (mb) Upper bound 1 (mb)

203 8999 6.8 • • • • • • 8533 5.0 ... ... 207 8990 29.9 40.1 8533 3.0 26.8 8120 5.6 • • • 206 8999 2.3 14.0 8533 0 15.1

* 10% relative error; 4 5% absolute error. (over)

porm N3S-418

(REV. 7-14-64) use OMM-N BS-OC PHOTOHUCLEAR DATA SHEET 167

u.s. department of commerce

NATIONAL BUREAU OP STAnOAROS
TABLE IV. Low-lying states in 20fPb, 20iPb, and 20SPb. Observed neutron Relative' Residual Er Er energy (lab) Intensity ®7"

b

isotope (keV) (keV) r (keV * 5) (4 10?) (mb)

207 8999 0

c 1"

*T 1615 100 3.1

570

5° 7

1054 42 1.3

898 1“ 727 79 2.4

8533 0 IT7

1159 66 2.1

570

5- 7

601 12 0.4

898

3“ 7

263 81 2.5

206 8999 0

d 0* 2256' 19 0.6 803 2* 1446 556 17.2 1165(410) 0* 1087 143 4.6 1460 2* 789 65 2.0 1684 4* 573 15 0.5 1704(±1) 1* 551 102 3.2 1784U2) 2* 473 59 1.8 8533 0 0* 1780 69 2.1 803 2* 982 147 4.5 U65( ± 10) 0* 619 45 1.4 1704( ±1) 1* ... 0 0.0 8120 0 0* 1370 ' 181 5.6

20S 8999 263 f 3- 7

643 74 2.3

Unresolved groups A 206 8999 1340 3* 903 76

205 8999 0 jr

7

205 8999 2 t* 7

B 206 8533 1340 3” 446 65

205 8533 0

5- 7

205 8533 2

i* 7

C 205 8999 576

3- 7

330 44

206 8533 1460 2*

D 205 8533 263 3.-

i 181 37 207 8120 570

5"

2 206 7724 803 2*

207 7555 0

l * 7

E 206 8999 21 50( ±1) 2* 110 61 205 8999 803 (JL~

V 2 * 2' Unassigned group

... ... • M ... 587 5

* Arbitrary normalization corrected tor isotopic abundance and photon yield. Unresolved

group intensities have no isotopic abundance or photon yield correction and are merely quoted

relative to the group corresponding to population o£ the ;, '‘Pb ground state following 3999- keV

photoexcitation. , h Relative error 10?, absolute error 45?. 'Reference 18.

d Reference IS. 'Centroid accurate to only 15 keV.

f Reference 20.

19. 20

M.R. Schmorak et al., Nucl. Data B5,

K. K. Seth, Nucl. Data B7_, 161 (1972)

J. H. Hamilton et al., Phys. Rev. C6,

207 (1971)

.

1265 (1972)

168
REF. D. Turck, H.-G. Clerc, H. Trager

Phys. Lett. 63B , 283 (1976)

EL EM. SYM.

Pb

i z

207 82

METHOP REF. NO. 76 Tu 2 egf

REACTION result EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,F ABX 27- 50 D 38- 50 TRK-I 4PI

Fig. 1. Cross section o

e

for electron induced fission in 204.706407^08 Pb ^Z<»8i asa function of the incident elec- tion energy Eq.

FISSION BARRIER

Fig. 2.'Summary of fission barrier heights obtained from fits to experimental fission cross sections for nuclei with Z < 85.

o: a-induced fission [12]. For 201 Tl, the value of 22.5*1.5

of ref. [3] is also included; a: proton-induced fission [12];

o: electron induced fission (present work). Values for different isotopes of the same element are connected by straight lines. The nuclear charge numbers are indicated. The erors are ±1.0 MeV for proton and a-induced fission [12] and ± 1.5 MeV

for electron induced fission.

^U. Mosel, Phys. Rev. C6 (1972)971.

?li64?$52ett et al " PhVs - Rev - B134

12

L.G. Moretto et al . , Phys. Lett. B38

(1972)471.

Tabic 2

Fission barriers fif as determined from electron induced fission. In the last column theoretical fission barriers according to ref. (1] with surface independent pairing strength are Usted.

isotope Sf(MeV) flj-heor (MeV)

Pb 24.0*15 24.0 Pb 26.8±1 .5 26 2 Pb 26.9*1.5 Po 28.6*15 23 1 Pb 24.3*15

form N3S-418

'REV. 7-1 4-641 USC OMM-N BS-0 C

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STAnDARCS PH0T0NUCLEAR DATA SHEET 169
REP. D.F. Coope, L.E. Cannell, and M.K. Brussel

Phys. Rev. C 15, 1977 (1977)

EL£M. 2 YU. A

Pb 207 82

method re77 Co 3

REACTION result EXCITATION ENERGY

SOURCE cstecto?

ANCLE

PANGE TYPE **N3£

G.G LFT 4 - 7 C 6,10 SCD-D 125

(4.847-6.753) (6.6,9.) ) .. _ . LNiiig brsrns-trahlung produced with 6.6 and 9.7 MeV beams, nuclear resonance fluorescence measurements

were made on targets of sf'* "'PO and Ground state transition widths for previously unknown energy

levels with widths 5 l cV were obtained. An interpretation of several of these levels in terms of a particle-core weak coupling mode! is suggested. TABLE IV. Observed levels and their strengths. The value for Tt assumes £T</T=J for

llJ>'pb and2 ' 3Pb, and gT^T = 1 for 207Pb and mBi. Values In parentheses have uncertainties

in excess of SO *. Statistical uncertainties are given for well-defir.ed peaks. Total uncertainties include uncertainties In flux calibration. Energy values are believed to be accurate to *3 keV for the starred (*) :os Pb levels and to ±5 keV for the other levels.

9 LEVELS 4.8-6. 7 MeV

Other measurements

Energy r. Uncertainty (. 5) *r,7r r, (MeV) Nucleus (eV) . Statistical Total (eV) (eV) References •

6.34 (Pb) 206 7.4 40

6.73 5.5 40

5.902 5.894

5.798 5.619

4.4

(3.0)

(1.0)

(0.5)

l5 40

<* c

5.615 (1.0)

0b C

• ro

</» JZ

«oc

5.577 (0.5) 0 >,id 0 i 5.C39 1.6 15 40 co

«M

4-> JC

a. •

• 1— -0 in ud

+J Cf 10 4.974 0.8 40 rv, a> 3

oo

2= AM) EO c t= 6.753 (Pb) 207 (<10> Am A U tn 0 p

<D C O «/> 5.716 (3) 0 • «/) 4J O 01 C •»- >) 0

5.600 (3) co 0 r— 01 M 4J 0^“v—

ITS po (PBM 0 1- >

5.490 (12) “O CO 3 3 0) <a 01 s- r- 5.223 (8)

e> C VO CD O JC <D C 01 s—

r—

•

<TJ CT» C —

+j£duj(nm

5.209 (3) 0 r* •• id -0 • 4.930 C1) 4.0 r*/r*i 12 CVI «t c*^ in ai

ai • .c 4- S_ (_> C CL O <0 *“ O

(13) 3.6 r#/r * 1 12 •r“ O*

OJ <71

1- 3 <n 3 . -r- 01 EE •

in r— 0 +u <—

»

4. 8** 7 j 12 tn 4-> CM ODr- O) U U A3 Ul

>, CO

Q_ c 3 «c e r*. 7.332* (Pb) 203 38 10 35 35,41 11,10

a.

•*

’ °l

•

1— c l. cn

TJ O ‘Or—

7.083* 14 10 35 15, 17*2 11.

S

Z •— • r- c ai +j is> 4- 7.063* 29 10 35 15,31*3 li,5 A • 3 10 3

0 as *

ai 0 • c * O JC 3 *-i 01 6.721* 15 20 40 15,14 11.10 u

3 C 4-> •*- -M

*-D «— oa— ai

s_ ' i- «n 6.357 (0.5) ss s 01 T3 <— cl. c « 0 m

6.305 (1.0) #» _i CCOr-

«JOTrO in 01

•> C Q1 C

6.262 4.1 45 c id . m 2: c 01 0 0 c

15 11 c > c c u •>- ai 5.513* 28 2 35 (T5 id «, • HJ C 4-> 1— 5.293* 8.6 5 35 5 11 3

Ul

1— cn

ai ££)h 3 01 <TJ (/> L. 0 O * 4.542* 6.3 5 35 r 5.1 *0.3 12 >< * 3 01 -r- 01 4.085* 0.51 40 J'* 2* 0.5 ±0.1 12 CL < in>1 3l < l -3

• 4- r— C at a r ao-c • • O C • O CL*r- 5.549 (Bi) 209 6.6 40 l_l 0. a. < 1/1 10 uu< m ac LD O r—

•

C\l 5.322

| 5.509 > 5.493)

17 5 35

5.422 8.3 45

5.293 12 15 40

4.843 • •1.4 12 4.803 > (10) 2.7 12 4.77l)

4.501 (3)

2.9 12

4.228 (3)

M N35.4IS

» r. v . 7.u.

ijSCOmm.-. ai-CC US. : £ s i* rv£r, r q* COMMERCE

n * t i a -. i _ e.^sioc*1 itinsia:- PHOTOSUCLSAR Data SHEET 170
HEF- C.N. Papanicolas, J. Heisenberg, J. Lichtenstadt

A.N. Courtemanche and J.S. McCarthy

Phys. Rev. Lett. 41_, 537 (1973)

METHOD

* EL EM. SYM. A

Pb

REF. NO.

207

z

82

78 Pa 1 rs

REACTION result EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE E,E/ FMF 1- 4 D 50-320 MAG-D 90

High- resolution inelastic electron- scattering cross sections from 20TPb have been

measured in the range of momentum transfer 0.37 fm* 1 iq^2.30 fm* 1 . Form factors have been extracted for low-lying neutron hole states and some one-particle, two-hole

states. Models for the induced charge of the neutron are compared with the data.

TABLE L The extracted effective charges for the levels of 20TPb under consideration are in the third column. The excitation energies of the collective 208Pb states whose transition charge was scaled down to fit the 2#IPb data and the corresponding

scaling factors are listed in the last two columns.

Excitation pr«»rw (MeV)

Single-particle

dpRcriotion e t

- Excitation in

2oa Pb (Me\n

Scaling factor

207ph

0.571 3Pi/2* ,-,2

/s/:

1 1.02* 4.086 8.09 xio* 2

0.899

1.634

3Pl/2' l-

*3p3/2

1

3p 1/2* 3-* 13/2

0.70*

1.19

4.086 4.58*10* 2

2.340 3/> 1/2* l ~2/7 /2

1 1.39 4.324 5.13 *10* 2

2.728 t/2 -* 2^9/2 1.21 3.198 1.18* 10* 1

3.413 3Pl/2* l-”^»/2 * 1.83 4.324 2.27 *10* 2 2.60* 10

* l 3.509 3Pi/2“"l*n/2 1.81 3.709

* Taken from Ref. 4.

q ( f m" 1

FIG. 3. Fits to the extracted form factors. The solid curves represent effective charge calculations while

the dashed curves were obtained assuming that p„ <r) of die transition in question is identical to the closest

collective state in 20# Pb but different in strength (as discussed in text), (a) 0.571 MeV, 3Pi/2 i/J '•

(b) 0.899 MeV, 3t#» l/2

" l — 3/2

_

l

s <c> 1-634 MeV, 3Pi/2* —liu/j* 1 ; (d) 2.340 MeV, 3Pi/2*

1 —2/t/2

*

; (e) 2.728 MeV, 3>i/t-Zg|/l{ (0 3.413 MeV, 3p in

m

1

- 1W J

(g) 3.509 MeV, 3p l/2 -liu/*- 1^ no d“hed curve

for (c) since no strong 7’ state in 2MPb was observed.

AiQd

aU

ii er? F ‘ C ' Khanna ’ and D * Ward, Nucl. Phys

113 (1972).

form N3S-418

IREV. 7.1 4-641 use OMM-N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 171
REP

‘ R.M. Laszewskl and P. Axel

Phys. Rev. C ^9, 342 (1979)

EL EM. SYM.

Pb

A

207

Z

82

METHOD REF. NO.

79 La 1 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 4- 7 0 4-7 NAI-D 135

(4. 5-6. 7) 4. 5-6.

8

Average elastic photon scattering cross sections were measured for J0,Bi« M'Pb, :07 Pb, “‘Pb, T1 and Hg at escitation energies between 4.5 MeV and the neutron emission threshold, with an energy resolution in the range between 50 and 150 keV. This resolution was sufficient to determine the strengths of most of the strong levels in this energy region for “*Pb; there are concentrations of strength in a few levels near 5.5 and

1 MeV with the sum of fl(£l)t values equal to about 0.84 and 0.65 t

1 fmJ

, respectively; each of these two groups of levels corresponds to only about 0.63% of the electric dipole sum rule. In the neighboring

isotopes, approximately the same amount of strength is distributed among many more energy levels; although this strength is spread in energy more than it is in J0,Pb, it remains relatively localized.

FIG. 5.

J0T Pb (enriched to 85% 207 Isotope): See caption of Fig. 4.

TABLE VI. Transition strength comparison at 5.5 and 7 MeV

.

Nucleus

5.0—6.0 MeV

/ffrrd£(MeV mb) %

20#Pb strength 6.5- fayydEMeV mb)

7.5 MeV

%

20®Pb strength

B1 10.4 68% 10.7 44%

“•Pb 15.2 100% 24.4 100%

*«Pb 12.6 83% * • * to«Pb ISA 104% 20.2 83%

TI 8.3 55% 7 JB 32%

Hg 11.6 76% *"

Ey (MeV)

FORM N3S-418

(R EV. 7-1 4- 04) USCOMM-NBS-OC

FIG. 12. Comparison of the measured cross sections

of, respectively, from the top, 2W Pb, 20< Pb, 207 Pb, 209Bi,

Tl, and Hg.

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF 3TANOARDS PHOTONUCLEAR DATA SHEET 172
w- T. Chapuran, R. Vodhanel , M.K. Brussel

Phys. Rev. C22, 1420 (1980)

method

EL CM. SYM.

Pb

ref. no.

207 82

80 Ch 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TVM RAN GC TYPE RANGE

G,G SPC 4-8 o 00 SCD-D 127

(7,7.65)

Resonant photon scattering from “‘•’“Pb and "Bi has been measured from 4 MeV to the neutron thresholds

using enriched targets, Ge(Li) detectors and bremsstrahlung beams with end-point energies of 7.0, 7.5, 7.6, 8.0, 8.5, and 10.4 MeV. Energies and values otgT^ir were obtained for many levels not observed in previous photon

experiments. Spins of levels in "*Pb and were determined from the angular distributions, and ground-state branching ratios were obtained from self-absorption measurements for seven transitions in "Pb. The results are compared, with earlier spectroscopic studies and with lower resolution average cross-section measurements. The

spectra of "’Pb and "Bi are discussed in terms of the excitations of the "Pb core.

[

NUCLEAR REACTIONS M*Bt(y.y) ; enriched targets; resonance

" fluorescence with 7.0, 7.5, 7.6, 8.0, 8.5, and 10.4 MeV bremsstrahlung. Measured £y, lT at 90* and 127*, and self-absorption; deduced gTf/T, r0 /T,J.

TABLE VTI. Comparison of measured level widths for M7Pb. Values of gr0 Vr were extracted from the present experiment assuming dipole angular distributions. Uncertainties include statistical and calibration errors.

Energy1 (MeV * keV)

inV/r*

(eV) £r,7r**(eV)

4.871*2 7.1* l.l 13*” f 4.981*2 6.1* 1.2 7

f 5.489*2 11.4*1.9 12 ' 5.596 *2 9.0 * 1.4 S

r 5.611* 2

d 5.5* 0.9 5.690 *2 3.0 *0.6 5.714*2 6.2 * 1.2 3

f 5.734*2 5.1±1.1 5.794*4 2.4 *1.0 6.179* 2

d 3.3*0.

7

6.542 *4 2.3 * 0.6 6.735*4 2. 7*0.

7

6.749*4 7.2 4 1.4 <10 f 6.818*4 5.1*0.9 7.306*4 3.0 *0.8

gToVr

(eV)

3.6 ±0.5

4.0 4 0.5

1 This work.

b Reference 10.

c Reference 36.

d Possible Inelastic transitions; see text for discussion.

e Contains contribution from an additional level; see

text for discussion.

f Uncertainties “In excess of 50^.”

(OVER)

fom M9S-418 (MV. 7-1 4- *4) use OMM*N as*o c PHOTONUCLEAR DATA SHEET 173

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
ENERGY (MeV)

FIG. 9. Spectra for 7.0 MeV (upper figure) and 7.6 MeV (two lower figures) bremsstrahlung scattered at 127* from a cylindrical target of enriched (84.8%) 207 Pb. One channel corresponds to 1.36 keV in the 7.0 MeV spectrum and 1 48 keV in the 7.6 MeV data.

174
mtr. C.N. Papanicolas, J. Lichtenstadt, C.P. Sargent, J. J.S. McCarthy

Phys. Rev. Lett. 45, 106 (1980)

metmoo

Heisenberg, CL CM. SYM.

Pb

REF. NO.

207 82

80 Pa 1 I hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TVPc RANGE TYPE MANGE

E,E/ ABX 0-4 D 0*3 MAG-D DST

Transverse form factors have been extracted for the low-lying neutron hole (particle) states of - 0TPb from lnelas tic-electron-scattering data. A systematic, multipolarlty- and momentum-transfer-independent quenching of ~ 55$ in the transverse amplitude is

' observed when compared with single-particle predictions for both electric ani magnetic

transitions. The magnitude of the observed effect is not reality explained by our present

theoretical understanding of this nucleus. PACS numbers: 25.30. Cq, 21.10.Ky, 21. 10. Pc, 27.80. +w

TABLE I. The quenching factors for the scattering amplitude for the sin- gle-particle (-hole) transitions of :0T Pb under investigation are tabulated

in the last column. The excitation energy, spin-parity assignment, sin- gle-particle description, and allowed modes of excitation of the corresponding states are also given.

Excitation energy (MeV)

r

assignment

Single-particle

description Multipolarity

Quenching of transverse

amplitude

0.571 5/2' &i/i '~“ 2/s/2

' £2 0.60 M3 0.70 0.899 3/2* 3Pi/2

1 3p3/2~

1 £2 0.60 Ml 0.70 1.634 13/2” W-IW' £7 0.45 M 6 0.50 2.340 7/2*

3Pt /2

1 ~" 2^7/2

1 £4 0.50 M3 0.60 2.728 9/2” ^1/? ~2g,/ 2 £5 0.50 M 4 0.50 3.509 11/2” ^1/2

*“' l*!l/2 £5 0.60 M 6 0.50

*Q .5-3 FM-1,6 LEVELS

FIG. 1. (a) d<y/d<j,.,0„ for the 2.340 MeV state in 207 Pb

measured at 160’. The curves shown correspond to single-particle predictions with Hartree-Fock wave

functions whereby the resulting amplitude has been

scaled by the factor indicated. Core-polarization contribution has been fixed by our 90° measurements (Ref.

4). (b> A’different scaling of the magnetic and the trans- verse electric contributions is possible in this case and

results in a better fit.

form M8S-41* Wtv. 7-1 4.141 USC OMM-N IS-O C PHOTONUCLEAR DATA SHEET 175

U.S. DEPARTMENT OF COMMERCE

NATIONAL lunCAuOF STANOAROS
REF.

R.O. Avakyan, A.E. Avetisyan, N.Z. Akopov, S.S. Danagulyan,

I.Kh. Kosakov, A. A. Oganesyan, Zh.V. Petrosyan, S.P Taroyan,

G.M. Elbakyan

Sov. J. Nucl. Phys. 33, 192 (1981)

Yad. Fiz. 33, 362 (1981)

EL EM. SYM.

Pb 207 82

METHOO REF. NO.

81 Av 10 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

$ G,XP RLX 0*2 0*2 TEL-D 100

We report the results of a study of the reaction yA —pX at an angle - 100* lab in a beam of

quasimonochromatic polarized photons. The measurements were made for three values of photon energy

i £, - 0.69. 1.40. and 1.95 GeVl in the nuclei ::C. ~Cu. and ;0? Pb. The range of kinetic energies of the protons was = 100-230 MeV. It is shown that the slope parameter B for the invariant cross section/ = Cexpl — Bp'}

is a weak function of A and does not depend on but the parameter Cr = C/AS, increases with increase of Er . the slope of the lines Cr l£r 1 being greater for larger A

.

C0H-BRMS .69*1 .95 GEV

PACS numbers: 25.20. 4- y, 13.60.Rj

FIG. 2. Invariant cross sections / for photoproduction of cumulative protons as a function of their momentum squared

for three target nuclei ( i: C—lower family of points. — middle family of points. Pb—upper family of points) The solid, hollow, and combined points correspond respectively to the values t\ - 0.60. 1.40 and 1.03 CeV. The curves are de- scribed in the text.

Points:

TABLK II.

rv , g«v

Nucleus

c *Cu -Pb

0.6‘J B O.SOsO.XI ll.ouo.-;: 10.19=0 36 C 71.3:!,

1

' 663 TsJ 3232 Zkl

1.40 8 10.40=0.31 I12t=0.22 9.G3=0/._

. c '05.4 Zil 973251 3353 245V;

1.05 B tO.36sO.ro 11.14=0.37 10.07=0.31 C 138.0rf2o «w=lS 62«

Note. The parameter B is given in units of (GeV/c)~*, while C is given in relative units.

fBLE I. Invariant cross section./ (in relative units)

Nucleus Cy. T

p , MeV

C«V

Its ,18 133 ,73 IW :io an

0X9 :s:_o.i3 4.30=0.10 3.40*0.0S 1 *8*0 05 1 55 s0 05 1.05=0.0 * 0 58*o 03 'C t.4*> 9.18=0.34 6.04*0.30 4.04 xu. 2 * 2.«iJ*o 19 l OS

0.10 1.07=0.12 0.85*o.o0

t.95 1 3.13s 1 .uO 7.21*0.71 4.01*0.06 :ui2so.'.»i iJi=0.J8 l.risti l.U0=0 22 Tp, MeV

i* r.3 193 :u.i

U.fTO 64.73s0.89 39 80=0X0 26.10=0 33 15.97*0 W 11.34 =0 33 6.'.9=0 25 4.59*0.20 “Cu t . ;«

*

59.5 1*2.52 50.43*2.1

4

37.70*1.73 21 .l.is l .1 1 (..'>3*1.05 5 57 =o»0 3.21*0.61

i uj 125.l»=«».63 77. 1=3.38 40.32s 4. 1

1

.1 I. 0 UJ.2O 21.32=2. •• 13/(2=1.37 8.37 = 1.42 rp. MeV

IDS 123 lU 1 U Hi -U1 222

0.C9 3927 =3.3 3tZI=5.4 1725*4.6 tt3.:=.i.7 86.? *2.6 51.4=2.2 31.2=12 “’Pb 1.40 3:u.3=232 3X3.8=17.3 223 2*13/1 147.2 =9.9 106.2=8 7 76.8*7.0 42-3*5.3

i.'Jo 734.0=68.0 523.0*30.6 338.6*36.7 213.4=39.3 137 4*21.1 108.3=16.9 (24*123

176

U.So (DEPARTMENT QP COMMEPC^ ATIQNAL BUREAU O" 5 TAMOAR 3 S
R*r. R.O . Avakyan, A.li. Avetisyan, N.Z. Akopov, S.S. Danagulyan,

I.Kh. Kosakov, A. A. Oganesyan, Zh.V. Petrosyan, S.P. Taroyan,

G.M. ^lbakyan

Sov. J. Nucl . Phys. 33, 448 (1981)

Yad. Fiz. 33, 858 (19H1)

EL EM. SVM. A

Pb 207 82

METHOD RE r. NO.81 Av 13 hg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

T Y P f RANGE TYPe RANGE

$ G,XP ASM 0*2 C 0*2 UKN 100

CQH-BRMS .69*1.95 GEV

At the present time it is rather well established that the experimental values of the invariant cross section / * {E/pt)(<P<j/d Cldp) of the reaction aA-bX (1)

in the cumulative region1,2 are described by an exponential dependence of the form / =C exp(-Bpz ). Most of the experiments in which reaction (1) induced by

various particles (jt

, p, y, . . .), has been studied were

designed to study the energy, angular, and A dependence of the parameters B and C.J “* As a result of the investigations it is has been established that the parameter B does not depend on the mass number.-!

of the target nucleus, on the type of incident particle, or on its energy, beginning with Ei = 1 GeV, while the parameter C, =C/<j,0i (ff is the total cross section for theaA interaction) does not depend on the type of particle a. In addition to the established properties of the quantities B and C it would be interesting to check

the dependence of the parameters B and C on the direction of polarization of the initial particle. For this purpose it is necessary to measure the asymmetry £

of the cross section for reaction (l) as a function of the direction of the initial-particle polarization vector.

peak has enabled us to measure the value of the crosssection asymmetry £ of the reaction yA —pX. The

asymmetry was calculated from the relation

z , 1 v'-y~

p, v'+ir-2v

where >*, >•* are the reaction yields in the case of perpendicular and parallel orientation of the photon polarization vector with respect to the reaction plane in the coherent bremsstrahlung spectrum; is the reaction

yield for an ordinary bremsstrahlung spectrum; P y is the average value of photon polarization in the subtracted coherent peak.

Measurements of £ were made in the nuclei ll C, MCu,

and 207 Pb for protons with kinetic energy respectively

T,= 173, 164, and 163 MeV. The energy bin was

==60 MeV.

The experimental apparatus and measurement technique have been described in detail elsewhere.11

Numerical values of 2 with their standard deviations o(£) are given in the table. The values of ct(2) contain both the statistical error

and the error in determination of the quantity P r

. 11

i

35

It t

<

In the present work we report the results of a study

of the photoproduction of cumulative protons at an

angle (* r ,= 100° in the laboratory system in the nuclei

I2 C, MCu, and 207 Pb for three photon energy values

(£ r =0.69, 1.40, and 1.95 GeV). The possibility of measurement at a definite photon energy was based on

the use of the method of subtraction of the coherent peakl0,u in the spectrum of quasimonochromatic pola- rized photons emitted by electrons in passing through a diamond crystal. 12 The existence of a significant

degree of polarization of the photons m the coherent

TABLE I.

NutlCWE

r,.G«v "C I

z Oltl 1 - : i r oiZt

u.e* -0 0761 *0.0233

i • •'•'Cl 1 -Mitt *0.0323

1.40 o.o4o: *OOJM 0'*Ot J -v .*r*j x 11.0.1*4 1.95 0.059U I0.09J6 •> tv* >< •• «>3t *0 10J3

From the figure, where we have shown 2 as a function

of Ej for the three nuclei it can be seen that the absolute values of the asymmetry in the region investi- gated are insignificant and depend weakly on E 7

. We

note that 2 for carbon is close to zero for all Ey, and

the maximum value 0.29*0.16 is achieved in the case

of lead for £ r = 1.95 GeV. The data show that within experimental error the asymmetry is almost indepenr

o.i „ i 0.1 \

1.0 'll '1.0 e

f

. s.v

-0.1

FIG. 1. Asymmetry Z of the cross section for photoproduction

of cummulative protons as a function of the photon energy Ey for target nuclei 12 C (C), M Cu (u), and 207 Pb •£>-

ponm NSS-41S

latv. 7-1 4- 44 1 use OMM-NSS-OC PHOTONUCLEAR DATA SHEET 177

U.S. DEPARTMENT Of COMMERCE

NATIONAL SUNCAUOF STAnOAROS
BEF' Y. Birenbaum, Z. Berant, S. Kahane, A. Wolf, R. Moreh

Nucl. Phys. A369 , -483 (1981)

EL EM. SYM.

Pb 207 82

METHOO REF. NO.

81 Bi 6 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N RLY 6-11 D 7-12 SCI-D DST

(6.7-11)

(7 - 11.4)

Tl 3

r 3

“V6 ’ Try,

Struct: Angular distributions of photoneutrons from the ;o '- -""Pbfv. n„) reactions were measured

at 11 angles around ft = 90°. The y-source. £ = 7-1 1.4 MeV. contained discrete lines! J£ $ .’OeV) obtained from n-caplure and was used in conjunction with a high-resolution J Hc spectrometer. Strong evidence for an E2 contribution and for E2-E I and possibly E I -M I interference was obtained

in both ;u Pb and : "“-Pb. The results are compared w ith calculations using a dircct-semidirect model

which involved an El and isoscalar E2 giant resonances. The results indicate that this model could

explain only certain features of the data while most of the other features remain unexplained.

Hu. 5 the Mato

i NUCLEAR REACTIONS *" Pbc. n). £ = 7.U 1 1.4 MeV. measured ail)) for I) 140° Deduced E2-EI and MI-EI interference effects.

40°

207Pb( f .%]

Angular distributions of neutrons Irom

Pbc,'.pi reaction leading to the ground

n '"’Pb lor various incident photon

energies.

2 a7 Pb< r.n«)

'"Pb tareet were taken from ref.

: i. The solid curves are calculated using the DSD model

form N3S-418

(REV. 7.1 4-641 USCOMM-DC 26010-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 178
___ C.N. Papanicolas, J. Heisenberg, J. Lichtenstadt, J.S. McCarthy

Phys. Lett. 99B, 96 (1981)

CL CM. SYM. A Z

METHOD

Pb

Her. no. 81 Pa 1

207 82

hg

RCACTION result EXCITATION ENERGY

SOURCE OCTeCTOR

ANCLE

TYPE RANGE

E.E/ ABX 4-6 D 0*3 MAG-D DST

F

*M0M,FM-1 4 E10 LEV

We report the identification of new high multipolarity transitions in 207 Pb and *06 Pb by the measurement of their form factor. A comparison to the corresponding excitations in 208 Pb is presented.

Fig. 2. do/doMott at 90° and 160° for the lour transitions of M7 Pb which we identify as being of E10 character. The solid line through the 90° data is the shape resulting from fr(lt<,, 2 . h|} /2 ) configuration scaled appropriately (sec discussion in text).

(OVER)

FORM M3S-4IS

(REV. r.u.141 USCOMM.OC 2«OIO.P«4

u.s. department of cc-im ;pc

N A T I ON A L. BUREAUS' STA'-CAPSS PHOTOHUCLEAR DATA SHEET 179
Strength

(Arbitrary

Unite)

306 pb

i 1

Or l!

207p„

Ik

1

! 1 ,

208pB

4.6 4.8 5.0 5.2 5.4

Excitation Energy (MeV)

Fig. 1. Excitation energy and strength of the E10 transitions observed in 208 Pb, 207 Pb and 206 Pb. Their strength (corre- sponding to the first maximum of their form factor) is given

in arbitrary units. The open bars represent the strength at 90* and they are enlarged by a factor of 10 as compared to the

solid ones (strength at 1 60°

)

180
;\

N

\

Pb

A=208

Pb

A=208

Pb -

1 181 A=208

M.D. DeSoqza Santos, j. Goldembarg, R.R« Pieroni, E. Silva,

O.A. Borello, S.S. Villaca, J.L. Lopes

Int. Conf. Peaceful Uses of Atomic Energy II [UN, NY] 169 (1955)

CL CM. SVM.

Pb 208 82

METNOO

Betatron; proton yield; radioactivity; r-chamber rep. no.55 D® 1 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYW HANOI

G,P ABX 11-21 C 11-21 ACT1

It- PI

RORM NSS.41I

IRCV. USCQMXbOC PHOTONUCLEAR DATA SHEET 183

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF »• »KO»ri'
Ref.M.E. Toms, W.E. Stephens

Phys. Rev. $8, 626 (1955)

Elem. Sym.

Pb 208 82

Ref. No.

55 To 1

Method Betatron; protron spectrum, yield, angular distribution; nuclear

emulsions IS

NVB

Reaction E or AE <7dE Notes

Pb208

(T,xp) Bremss.

25

Lead enriched in 208.

< 8 „,.a3) U.S. DEPARTMENT OF COMMERCE

USGOMM-OC 188Se-P63 NATIONAL BUREAU OF STAN OAR OS PHOTONUCLEAR DATA SHEET 184
Ref. J.D. Prentice, K.G. McNeill

Phil. Mag l, 373 (1956)

Elem. Sym.

Pb 208

Ref. No. 56 Pr 1

82

Method gx

22 MeV synchrotron; Nal; neutron yield; Cu J reaction

EGF

Reaction E or AE ad E J * Notes

Yield (Pb

208

) _

, Yield (natural lead) * ^

Pb

208

(y,n) Bremss,

22

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

form NBS-418

(8-i-eai USCOMM-OC 18856-P63 PHOTONUCLEAR DATA SHEET 185
PHOTONUCLEAR DATA SHEET 186
Ref. W.C. Barber, F. Berthold, G. Fricke, F.E. Gudden

Phys. Rev. 120 . 2081 (i960)

Elem. Sym.

Pb 208

kef. No. 60 Ba 4

82

Method Stanford Mark II Linac; magnetic spectrometer; plastic scintillator

counter telescope JHH

Reaction

(•", «')

E or AE a d E J » Notes

42.5 4. 14±0.20

15

(giant

re son.

)

+6000

6500 Mev-mb

-3000

Both E measurement at d o 160°.

form HBS-418

(8-1-83) USCOMM-OC l88Se-P«3 PHOTONUCLEAR DATA SHEET 187

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 1TANOAROS
* (V Jo Halpern, and E. G. Muirhead

fW. U3, 1302-12 (i960)

Cl CM. STM. ' A

Dt Lc.cron: neutron threshold; ion chamber

Pb 208

REF. NO.60 Ge 3

82

NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANCLE

TYPt HANOI

G,N N0X THR C THR BF3-I 4 PI

THRESHOLD

Table L Summary and comparison of neutron sqiaration energies inferred from present threshold measurements with values predicted irom mass data and reaction energies. All energies are expressed in the ccntcr-of-mass system in Mev.

KritClIlMI No. runs Present results Other results Method Reference

Pb**(y,f»)Pb** 3 7.404±0.028 7.36 ±0.05 PbB*((f^)Pb*T e 7.380±0.008 Pb^fn.yJPb" e

7.38 ±0.06 mass data q 7.357±0.012 mass data r

• P. M. Van Patter and W. Whallns. Rev*. Modern Phys. 20. 402 (1954); 29. 7S6 (1957).

• W. H. Johnson. jr„ and V. B. BhanoL Phy*. Rev. 107, 0 (19S7).

• J. L. Benson. R. A. Oamerow, and R. R. Rica Phya. Rev. IU. liOS (1959).

Fig. 2. (a) Neutron yield data for lead from 6.7 Mev to 7.7 Mev, and (b) square root plot of yield data. Linear extrapolation

of (Y/M)l predicts an apparent threshold 60 kev lower than

what is obtained from yield data in the immediate vicinity of

threshold.

• NBS-418

» < Am PH0T0NUCL2AR DATA SHEET 188

U.S. DEPARTMENT OP COMMERCE

NATIONAL BUREAU OF 1 TANC>A«-'S
Ref. H. Crannell, R. Helm, H. Kendall, J. Oeser, M. Yearian

Phys. Rev. 12^ 923 (1961)

Elem. Sym.

Pb 208 82

Method Linac; Cerenkov counter telescope

Ref. No. 61 Cr 1 JHH

Reaction E or AE

s

<7d E J n Notes

(e“,e"') 183

2.60

Crut, Sw^etman, Wall

Phys. l£, r.'j? (I960).

Nuclear

Measured y transition rate f = m

rm

= (3.80*1.4) 10

10

sec"

1

; (E3) °

6 - 4Ap3,o8tlU

rm

= (2.23*0.7) 10

8

sec"

1

; (E4)

g = r /r = 36.6*12

m' sp

Fits R = 1.20 fermi

o

[T = single-particle estimate of the

sp

y transition rate.]

•5.44

• 3.13

3.75

.60

J. 37

8<A)/fAW 19

A/180*. a

(MotI A*4

'Wvi (7/Moti * -* 5

LAS UUtt

tAJ *L«

444*18 \U *11

*4S* 4 Mil tfj* 7 J AM

41* m

1*7 mil

21* «*2

1*44*10

14S* 14 1870* JR

II** 14

*74S *0044

1407 *4 IS 1748 t«M »

*5:

- n4JI U8

11

tm

113 *IJ

11* *13

7J * 1 J jm *ir 4 * 14 3* 14 14* a M m mm

441

444

4*4

23M

212 *JJ

14 J *11

SI 2 *7 4 IU **2

V»*J40

MSO*2JO

J7B0*«79 WO* 70i

1401 *004*

1444 *0 014 113* *0877 14M *0.14 m

' wftm

w»

.. ?J6

~im

in

UiU- 4Ji

U *0-4* 23 *0.37 142*449 *•4*174

. JU *13

4M»*mo

ll«N IZR* U*

*. mm m

444

444

444

41ft tu

P>«JM

im*40i *** *4 MO*270 4**1

(144*1.2 >XR»

(l.4**OuftJI X 10* 0.12*0 401X19 pj»*a.4Mxia» BJ4*»1 )XIP

mm*0*34

1LS *084S

1104 *081 1US *0814

1127 *111

lA sitSii

Fic. 13. In this and the following four figures are shown portions

f.f the energy-level structures of the nuclei investigated in the

present experiment. The information is, for the most part, taken

tram reference IS. The 7-ray transitions shown are those whose

decay rates were determined directly in the present experiment

1 or inferred from a knowledge of the 7-ray branching raUos in de-

: excitation of the nucleus. The spin and parity of each level are

; shown at the left, where known, and the energy of the excited

states in Mev on the right. The best assignments of the transiUon

multipolarities are indicated. This figure shows the energy-level

structure of Ni**. Data on the decay schemes are taken

principally from Nuclear Data Sheets

National Academy of Sciences,

National Research Council (U.S.

Government Printing Office, Washington, D.C., 1959)

form N6S-418

(8-1-43) USCOMM-OC 18896-P63

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 189
R«fc E.G. Fuller, Ec Hayward

Nuclear Phys. ^-31 (1962)

Method 50 MeV betatron; BF^, Nal counters

Elera. Sym.

Pb 208

Ref. No. 62 Fu k

82

JHH

Reaction E or AE ad E J* Notes

Pb206,7,3

(7,7)

(7,*n)

M-8.5

(Sis)

18.5

J

= 3.93 MeV-b

J

corrected for multiple neutron

production.

Self>absorption measurements made

at 7 MeV.

SSLL

i T«Mf I (Kwcncd sramrnitsion^ corrected for cfcctnwiic .ihvwptmtr

Target* Abwrber Thickne«

IS <m-'» Pbi7 2 1 cm-» **Pb-"*' i3 6ft wm-'l Bi «< 97 c t 1

R» 10 r 0*« 0011 144 0 661 0 012 0 846 0 049

0.6*4 0017 •» ! "Ph*r* 11 2 09?4 0050 0 74 0041 f f»>2 OOA«

0.599 0 0»l*l J Bi 12.2 1 018 oo«o 1045 0 0.18 .» "'#2 0 040 0*19 no'io

|

pr» 7 65 0822 on?* o«*>i on:.

0 790 0 028 0 910 0 02S

| '*Pb*nT “

7 8* 0.797 0 028 0’»l« noN

7.47 0**.* 0 029 1 m 749 0 *90 0 025 1

1 *) Measured »Hh both target ami ubuuher at IhiukJ nitrogen temperature

Tam* 3 Average level parameters at 6 MeV

Lead Radio-lead Bnirtuth

l

/ (a n= • 10 1* 400 0 -64 i 24—18 ?»—aw 10—=48

• ruv) • VI o n - j.i " 0 19 1 *. tmaiHbt 18.1 a» 68 v

/’ 0.1) -0 21 0.14--IO 02-10

... 1? M«W (mb* 2| 20 21

|

' (MeV • mftl 42 40 48

i

2 FOR FIGURES.

form N 8V41 S

(••(>.31 uicsMM.ee ta

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 190
Elen. Sym.

Pb 208 82

Method PAGE 2

kef. No. 62 Fu k JHH

„ —

i

- .

i H

f

1

i T 1 ret «.

1 ! 1 i

- Iu\ 1 / -

• /

1 rk

;r ! .. J 7 ; A

i—

ma«f «•«•» tm^d md feMA. Tto MHi *V TWM«M

<7d E

Ref 5 : Fv

Ref 5 : Re

Her & Hajyv,

692 (1950

lbel & Malnn

(I960)

ard - P

- Phys

lys. Rev.

Rev. 118

01,

701

r-ivn*

a • V/

* * ’ '*4 dmurTdmm HMmu* cum for r**wfea* *to4 Nwwk TW rw« ft J» /iOl u dcfwa* « me uu ir* (4*

Kim 'ton* m « ftoWitto td lit 9M iMurpiMi Vuu «uui «J . ftto (Iw Uf|tl wtf iMucfio ihakarvn Mad

to I*i (intntto ffto Kw.tuntM iiiai uprwiw tor otoewtoi .iMwiaM toU ilto* umtumm for it* «M>«r T*to

to r.»n* irmarr.itov ’**daj ltor*l tol i»e w*l miru«r« untmiMt i J .tAcJ Mni Hi* mumut .... « ifw

C* -*».*» *«to trf iftc i«r^ (toa4 *flfe/rp**to j*m to*«Hto to 4 Me* til tow» jf * i imr ir* rk\iruMt

4®**t"*^ ''**• «fto fa.» irutimw* *«Uto tvw.no (Aifw wtoiettog *nri rmncMt toi ..cr^r ».»«r tol P*/***fiH if mu for the cv..icU tum

• • ##V Je, _ Fig. 6. Sdf-abwrption attenuation o**'—* for lead. deacnpfion for fig. 3 N

»*o

i

- m NBS-41S

»r-T.*3> vlCOMM'OC 1«SB«*P«3

!«er-

..•- !

•p^ron £h£*i» <«•#*’

F* T. The Muiraa p^odHCtM ctom imoi for W* The triangle* reorient the *fiM toiu* 1*4%** firrTI & HMfM muMipfKUir Po*m* *m orumid from * l M«V Nn-<».Jtt' jrud»%i* .4 the mytuom ywMcurie iiotfi near mmlwmotMtal b* ******* >uw>«i *>ricrc a fuif • Me* h.n <*»ith *o

omiI The autoMt frpre*rme*l 9r the open ***** lu*« been *octccux1 foe ihe nc-ir- n mu.t.rtt.t* n* wfoe, bettotoh ihe itrt of 4b*»«a» unfair the merg** of the ifliffnani J.fW trent.tHto *»:

t,. i*Ltoho». /# «*. “» The hrtfiMi of the *cn^-l l*ne» arc prvfv»n^i t.. tnr v.wu^icJ

Mimgifto of the traiuatooi Ref 1L Balashov, Shevchenko & Yudin, ro be publis hed: Shevchenko,

private communication.

, JO

; to-

*

i

i

-

.

t Vj

i

. 0

i.*’*

1 9«

t, j 1

Cr

1 .

1 3 5 id

l*

photon energy im»vi

Fig. I. The <y, nicnm MCtmm for the lead mxofes near threshold The airo»* indicate the p*%jt*on* of the ty. n> throhold* The arro** beneath the a*it of ab*kit»a» uuli*4ie the energies of the wnfxvtant dipuk transition calculated by 8ala*ho* rt a/ “1 The height* of the \crtwal line* are profwt.invii t. the calculated strength* of the transition*

U.S. DEPARTMENT OF COMMERC:

NATIONAL tSVJ I *U Of- PHOTONUCLEAR DATA SHEET 191
Ref. Yu. I. Sorokin, V.G. Shevchenko, B.A.Yur'ev

Zhur.Eksptl. i Teoret.Fiz. Jti, 1600 ( 1962)

;

Soviet Phys.JETP 16* 1127 (1963)

Elem. Sym.

Pb 208 82

Method35 MeV Betatron

206 207

counters ( activity of Ti and Ti detected.

Ref. No. 62Sol 6 Cr

Reaction E or AE ad E J

it Notes

Pb207 (Y,p)Ti

Pb

2°8

(7,p)T:.

)2°7

( 208/

iPb-'(7,p)T:

Pb‘"w''(7,p)T

208

Pb

pb

208

(Y,

(7> Pn)

d)‘lji

206

207

206

207

.,206

15

33

15-

33

26 55*20)

33

,206

26.5 60±20 ) 33

Cross section obtained from

corrected yield curve.

Assumptions made on contribution of

Pb20

®(7, pn)Ti20^ reaction to - contribution greatly overestimated.

o. mb

FIG. 2. Cross section of photonuclear reactions in lep 1- cross section calculated from the total yield curve, 2- cross section for the ( y, p) reaction.

form N8S-418

te-i-«3i uscomm-oc iasse>p«3

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS

PHOTONUCLEAR DATA SHEET 192
U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

form NBS-418

(8*1*43) USCOMM-OC 188S4-P63 PHOTONUCLEAR DATA SHEET 193
TIN** np IWNHCMI

Fig. 2. Time of flight spectrum for Pb208 (y, n) using a recoil detector at 9.31 m from the (Y,n) target, and an electron energy of 9.3 MeV.

I I I i

Fig. 3. Time of flight spectrum for Pb206(Vl Q) using a recoil detector at 9.31 m from the (Y,n) target and an electron energy of 10.3 MeV.

Table 1 Some representative level parameters in Pb208 . Fn = neutron energy ; £v = corresponding level energy caiC

. ^rom assuming a neutron separation energy for Pb of 7.368 MeV J JdE = integrated cross section

for the level in question ; fQ - ground state radiative width

obtained from j ~ dEy assuming dipole radiation and

1 n^ ; o! * t = uPPer limit on the total level width. Fn (MeV)

0.264

0.324 0.437

0.557

0.624

0.666

0.853

E.< (MeV)

7.632

7.692

7.806 7.925

7.992

8.034

8.221

j ^d£y (MeV-mb) r0

(eV) r

t (keV)

3.7 19 < 9 2.9 15 < 10

2.4 13 < 40

2.3 13 < 70

3.9 22 < 80

1.4 8 < 70

2.7 16 < 100

form NBS-418

(8-1-«3) U3COMM-OC I88S8-P83 PHOTOHUCLEAR DATA SHEET 194

U.S. DEPARTMENT OP COMMERCE

NATIONAL i'lRIAU OF STANDARDS
REF. H.H. Fleischmann, F.W. Stanek

Z. Physik 172 (1963)

El Em. sym. a

Pb 208 82

METHOD

Fe^(n,y) source; photon scattering

REF. NO. 63 F£ 2 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE P AN OK TYPE RANGE

G,G LFT 3-8 D 7 SCI-D 4PI

(7.28)

r = o.8o±o.o8

Yo

Branching ratio:

Y/Y0 = 1.4

eV, assuming dipole transition.

with uncertainity of a factor of 1.5.

I-i„\ von 7"j- bi\v. 3i-S:rcuUurpcm oci cir.cm Absorber H*0

Fij. 2. Spektrura der cigent:ichea Resoniazsircu«r.0

' ,3..;crcr.c der Sp^ktrca von Fig. 1)

form MBS-41S

(RCV. 7* 14- 64 ) USC OMM*OC 26010-P64 PHOTONUCLEAR DATA SHEET 195

U.S. DEPARTMENT OF COMMERCE

NATIONAL BtoREAgOF STANDARDS
I, REF. B. Arad (Huebschmann) , G. Ben-Oavid (Davis), I. Pelah,

Y. Schlesinger

Phya. Rev. B684-700 (1964)

EL. EM. SYM.

Pb 208 82

MeTHOO

Reactor, (n,y) reactions source

REF. NO. 64 Ar 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 7 - 8 D 7-8 NAI-D 135

(See Table II)

WIDTH

7.285 MeV resonance: Self-absorption experiment gives level width F

0 = 0.8 ± 0.03 eV.

Table II. Capture gamma-ray sources and their properties.*

Source Chemical

composition Masskg Principal y rays (in MeV)

A1 Metal 1.640 7.73 Cl polwinyl Chloride 0.380 8.55, 7.78, 7.41, 6.96, 6.64, 6.12, 5.72 Co CoO 0.230 7.49, 7.20, 6.98, 6.87, 6.68, 6.48, 5.97, 5.67 Cr Metallic powder 0.480 9.72, 8.S8, S.49, 7.93, 7.09, 6.65, 5.60 Cu Metal 1.S60 7.91, 7.63, 7.29, 7.14, 7.00, 6.63 Fe Metallic powder 0.440 9.30, 7.64, 7.28, 6.03 Hg Hg2 (N0,) J -2H,0 0.310 6.44,6.31,5.99,5.67,5.44 Mn MnO; 0.240 7.26, 7.15, 7.04, 6.96, 6.79, 6.10, 5.76 Ni Metal 0.900 9.00, 8.50, 8.10, 7.83, 7.58, 6.84, 6.64 T1 TIO* 0.210 6.75, 6.56, 6.42 V V-O, 0.120 7.30, 7.16, 6.86, 6.31, 6.40, 3.S7, 3.73 V Y«Oj 0.200 6.07, 5.63

• s-.ure detailed information. additional lines, intensities, etc., see Ref. 6.

Table III. Elective cross sections.

y source Energy

(MeV) Element Protons

Scatterer Neutrons

(«TT> (mb) Notes Hg 5.44 Hg SO 116, 118, 119, 120, 121, 122, 124 Cl 6.12 pr m 59 V 6.508 Sn SO 62, 64-70, 72 Co 6.690 Pr‘« 59 82 Co 6.867 Nd 60 82, 83, 84, 85, 86, 88

A1 6.98 Pb®» S2 126

Cl 6.98 Pb 82 124, 125, 126 Ti 6.996 Bi« 83 126 Cu 7.01 Sn SO 62, 64-70, 72 Ti 7.149 Pb®* 82 126 Co 7.201 rb“ 82 126 Ma 7.261 Pb®* 82 126 Fe 7.285 Pb®* 82 126 V 7.305 Pb®* 82 126 Hg 7.32 Pb 82 124, 125, 126 Fe 7.639 Ni 28 30, 32, 34, 36 Fe 7.639 prm 59 82

Cr 8.499 Cu 29 34, 36 Cr 8.881 Pr“‘ 59 82 Ni 8.997 Sm 62 82, 85-88, 90, 92

128

103 a

14

2.7 a

22 2900 b 346 a

1560 b

1000 b

1000 b

2525 a 4100 a

12.5 5500 c

10.5 d

10 d

24.4

9.3

2.8

Gro,A

he

ltrw .«S(r°Rrf;

1J6?. be introduced in the cro”-section valuej because °f Iar«e differences in line intensities quoted by Bartholomew and Higgs and by

nuclear^oM°sect?on

>

.W COUnting rate- thiclc ,CattCr'r‘ were u5ed - which wi“ introduce a systematic error in estimating <»„> for resonance, having a high

1 «?uming the gamma intens.ty to be 0.02 photons per 100 captured neutrons (see text). 20 tt MoSvfiS.'f* ) h 7

. 6i 2031 (1962)]

9 i*ne of iron capture gamma rays as a single line. However, a recent paper by Fiebiger. Kand and Seeel rPhvs Rev 12S reports two different lines of equal intensities having energies of 7.647 and 7.633 MeV. The present experiment tMmirmiw J

25, difference of 14 keV. therefore, there is no possibility of deciding which line is responsible for the scattering. experiment cannot resolve an energy

form NBS-418

(REV. 7*1 4*64) uscomm.dc zeoio>pe« PHOTONUCLEAR DATA SHEET 196

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. ELEM. SYM. A Z R.R. Harvey, J.T. Caldwell, R.L. Bramblett,

Phys. Rev. J^, B 126- 31 (1964)

methoo

S.C. Fultz

Pb 208 82

REF. NO.

Positron annihilation; ion chamber 64 Ha 2 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE NANCE TYPE RANGE

G,N Him ABX 6-27 D 6-26 BF3-I 4PI

g,2n m+ ABX 12-27 D 12-26 BF3-I 4P1

Sample enriched to 99,75% Pb

208

Fig. 3. Top figure shows data points for <rC(7>n) +(Y.»P) jfor Pb3**, obtained from single-neutron counting data. Center figure shows data for r(y,2n) obtained from double-neutron counting

data. Data points for the compound nucleus formation cross

section of Pb“*, i.e., <r[.(y,n) + (y,np)]+<r(y,2n) are shown in the bottom figure. Solid curve is a plot of a Lorentz line having the parameters given in Table II. The data are uncertain below 8 MeV owing to low beam intensities encountered.

Table II. Lorentz line parameters and <r_ 2 values

for Pb isotopes and Bi.

Peak Width

Isotope

<tq

. (mb) r (MeV)

lu (MeV)

«•_: 0.00225.1 5,3 (mb/MeV) (mb/MeV)

Pb31* Pba7 Pb»*

Bi“»

525

485 495

520

3.75 3.87

3.78

3.83

13.7

IJ.6

13.6

13.5

15.6±1.6 16.2 14.5±1.5 16.3 I4.1±1.4 16.4 16.6±1.7 16.6

/74 +

form NBS-418

(R KV. 7-14-54) USCOMM-OC 25010-P54

Taiile I. Tnicgrated cross sections in MeV-b, up to 2S MeV, for Pb isotopes and Bi.

Is..!..; <

j' a(y,n)d/\ J

<r(yt hijdl:

. j>; J\dE+W 0.06.VZ/.1

Pi.3- 2.12 0.56 2. 78 ±0.28 3.07±0.36 2.96

PI.3" 2.05 0.60 2.65±0.27 2.95±0.30 2.97

pt'Stt 1.96 0.95 2.91 ±0.29 3.21±0.32 2.98 Ui" 2.17 0.76 = 2.93±0.29 3.25±0.33 3.00 197
REF. J.A. McIntyre and J.D V Randall

Phys. Letters JL7, 137 (1965)

ELEM. SYM.

Pb 208 82

METHOD

Reactor, capture gamma rays Compton scattered

REF. NO.

65 Me l EGF

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPt RANGE TYPE RANGE

G,G LFT 7.28 D 7.28 D NAI DST

r = 0.7 ± 0.2 eV

Rtoctof

Shield VMI

Fig. 1. Schematic diagram of die apparatus. An imagi- nary "typical" spectrum is shown at the lower right.

SCATTHINO ANOLI IN MOIIU

Fig. 2. Angular distribution of the elastically scattered gamma rays. The counting rate has been divided by

1 + coo2 9. The two abscissa scales give the scattering

angle and the corresponding shift m gamma ray energy

with respect to the beam energy. The insert at the right shows the small angle data in detail.

form NBV418

(REV. 7-14-S4) USCOMM.OC 2S010.P94 PHOTONUCLEAR DATA SHEET 198

U.S. DEPARTMENT OF COMMERCE

NATIONAL, BUREAU OF STANOAROS
G. Ben-David, B. Arad, J. Balderman, and Y. Schlesinger

Phys. Rev. 1^6, B852 (1966)

EL EM. SVM.

Pb 208 82

METHOO

Nuclear Resonance Scattering using N,G reactions.

REF. HO.

66 Be 3 JDM

RESULT EXCITATION SOURCE DETECTOR

REACTION angle ENERGY TYPE RANGE

G , G RLX V/l I »-* O D 5-10 NAI-D 5

- 10 135

Fio. 3. Histogram of distribution of observed resonances among the different targets. The atomic number is given directly beneath

the chemical symbol followed by the neutron numbers of the naturally occurring isotopes. Magic numbers are shown in brackets.

Tadix III. List of effective cross sections.

Scatterer Energy Gamma

(MeV) source

1 (mb) Scatterer Energy (MeV) Gamma

source

i (mb)

8.907 Ni 100 Sn 7.01 1 10 pru» 8.88t Cr 9 Nd 6.867 Co 30 La 8.532 Ni 6 PrU* 6.867 Co 3 Te 8.532 Ni 3» Te 6.7 Ni Cu 8.499 Cr 24 La 6.54 12 Zr 8.496 Se 3050 Cd 6.474 Co 110 Zn 8.1 19 Ni 13 Mo 6.44 Hg 25a Sc 7.817 NI 50 La 6.413 Ti 72 Sc 7.76 K 90 Mo 6.413 Ti 10 Sb 7.67 V . . .k Tl 6.413 Ti 25

Crl 7.64 Fe 40* w ^6.3 Ti . . .6 Ni 7.64 Fe T Sb 6.31 Hg

Pr'« 7.64 Fe 12« Ti 6.31 Hg 2* T1 7.64 Fe 370* Sn 6.27 75 La 7.634 Cu 7 Pb** 6. IS Gd Mo 7.634 Cu 11 Te 5.8 Ni . . .f Bi** 7.634 Cu 4 La 6.12 Cl 35 Te 7.528 Ni 66< pr ui 6.12 Cl 110

Bi** 7.416 Se 100 Pt 5.99 Hg 40**

Bi*P 7.300 A* 80* Tl 5.99 Hg s« Pb** 7.28S Fe 4100 Pb*» 5.9 . . sk Cl 7.285 Fe 34 Ce 5.646 Co 17 Pr‘“ 7.185 Se 80 Bi** 5.646 Co 55 Tl 7.16 Cu 120 Pb** 5.53 70 La 7.15 Mn 50 Hg 5.44 Hg 7 St Bi** 7.149 Ti 2000 Hg 4.903 Co 385

on*. MBV4I8

»<rv r. >..««•

' ' r.M.»,r.r ;«fl/

• High-energy component of a complex spectrum.

‘ A broa>l scattered spectrum with no observable peak structure.

• There are actually two lines of energies 7.647 and 7.633 MeV having equal intensities in the iron capture gamma spectrum. The cross section has therefore been corrected, although there is no possibility at present of deciding which line is responsible for each resonance.

4 Is probably an independent level^ln the complex spectrum of Nl v

rtyi on Te. 9 • Rough estimate.

' May be inelastic component from 7.S2* level In Te.

• The relative line Intensities In this case are due to Groshev and co workers. ““

• No line Is known for the source at this energy.

1 Difficult to resolve among the many source lines present at this energy. PHOTONUCLEAR DATA SHL. 199
REF. ELEM. SYM. A Z E. J. Dowdy and J. A. McIntyre

Phys. Rev. lj£, B982 (1966) Pb 208 82

METHOO REF. NO.

7 rays from 14 N(n, 7 )ls N reaction; resonance fluorescence 66 Do 1 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.G LFT 8 D NAI DST

f

Q = 1.30 ± 0.25 eV assuming level decays only to ground state.

Erratum: Line observed is 7.277 MeV

corrected width /l.4t0.25 eV.

Phys. Rev. J£7, 1166 (1967)

[Ref. No. 67 Do 1]

form NBS-418

(REV. 7*1 4-04) USC OMM.OC 26010-PS4 PHOTONUCLEAR DATA SHEET 200

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOARD3
REP.

1 G.A. Peterson and J.F. Ziegler

Phys. Letters 21, 543 (1966)

ELEM. SYM.

Pb

A

208

z

82

METHOO REF. NO. 66 Pe 1 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

E,E/ FMF 0-6 D 70 MAG-D no

Q is 0.21 - 0.65 fm*

1

.

target.

rig. 2. Inelastic cross section for the excitation of

• -ofepb in units of the point Mott cross section versus

clastic scattering momentum transfer in units of in- verse fm. ONUCLEAR DATA SHEET 201

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

Tig. 1. Energy distribution of 62.8 MeV electrons scattered elastically and inelastically at 130° from a
REF. J. F. Ziegler and G. A e Peterson

Proc. Gatlinburg Conference 319 (1966)

EL EM. SYM.

Pb

A

208

z

82

METHOD REF. NO. 66 Zi 2 hmg

reaction RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ RLX D 28-70 MAG-D DST

p b 208 B(EL)

2.60 MtV Ltvtl 8(E3 » ) * 7.88 * I0 9 «* F*

0.2 0.4 0.6

<I X

(F-')

Fig. 2. Inelastic cross sections for the excitation of

ic, "Pb by 70 NleV electrons

vs. elastic scattering momentum transfer in inverse Fermi.

TABLE 1

Values of B(E3 1)

Isotope Energy

level B(E3l) (eV)

30 *Bi

ao,Pb

,0, Pb

,0,Pb

2.58

2.581

2.73.' 2.615

2.621 2.66/ 2.60

0.527 ± .012 0.773 ± .020 0.788 t .028 0.740 ± .012 0.702 ± .032

Tuan, S. T. p and Wright, L. E., Bull. Am. Phys. Soc. 11, 338 (1966); Reynolds, J. T., Ph. D. Thesis, Duke University; Onley, D. S., private communications.

'• t;Iton> L. R. B., "Nuclear Sizes, " Oxford Univ. Press, London, 1961); Mofstadter, R., private communication.

form NBS°418

(REV. 7.1 4.44) use OMM.OC 200 1 o. P«« PHOTONUCLEAR DATA SHEET £02

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
E. J. Dowdy and J. A. McIntyre

Phys. Rev. 1166 (1967)

tk cm. a r r

Pb 203 32

method REF. NO.

67 Do 1 hrag

REACTION RESULT excitation

ENERGY

SOURCE OET ECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G LET 7 D 7 NAI-D DST

ERRATUM FOR 66 DO 1 Phys. Rev. 145 . 9S2

( 1969)

porm NBS-418

(R tv. 7-1A-64I USC OMM*OC 26010- PS

4

PH0T0NUCLEAR DATA SHEET 203

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDAROS
«6F. cu. dM. i r M. A z M» Giannini, P. Oliva, D. Prosperi and G. Nucl. Phys. A101, 145 (1967)

method

*

Toumbev

Pb 208 82

REF. NO. 67 Gi 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G LFT 7 D 6-8 NAI-D 4-8 DST

Note: Varied Doppler Width

form NBS-418

(RCV. 7° 1 USCOMMeQC 26010-P44

[over]

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 204
Table 5 Fe-“*Pb resonance

Our results Ben David et at. •) method (i) *) method (ii)

(b) 5.2 ±1.5 5.2 ±1.5 4.1 "r» (b) * 16.2 ±1.0 17.2 ±1.7 r7 (eV) 1.4 ±0.5 1.7 ±0.6 0.80 ") ry o (eV) 0.84 ±0.05 0.93 ±0.09 0.80 ±0.03

O (eV) 3.9 ±0.3 4.0 ±0.3 8.0 ±1.0*)

*) These values are obtained by applying method (i) to the experimental data reported in our

previously published work *). *) With the assumption ry0//'

7

1. *) Using a rotor technique, the authors ') obtain 6 TM 6.5 ± 1.0 cV.

205
REF’ R. R. Hurst and D„ J. Donahue

Nuci. Phys. A91 . 365 (1967)

EL EM. SYM. A

METHOO

Neutron capture gamma rays

Pb

REF. NO. 67 HU 1

208 82

EGF

RESULT EXCITATION SOURCE detector

REACTION ENERGY TYPE RANGE TYPE RANGE

ANGLE

G,N ABX 9-11 D 9-11 BFM 4£I

Table 1 Fig. Photoneutron cross sections (mb)

Cross section (in mb) versus mass number of the target for gamma-ray energies of 9.00, 9.72 and 10.83 MeV. The solid lines are plots of eq. (1) in the text.

Target 7.72 MeV 9.00 MeV 9.72 MeV 10.83 MeV

"Co 9.0 -l 0.8 "As 20.4- 1.7 «Nb 0.53 ± 0.10 14.6± 2.2 25.8-*- 2.1 lMRh 10.6 x 1.7 38.8 ± 3.1

117Ag 1 10®Ag j 10.0 x 1.5 37.6 ± 2.9 iuln 17.1 ± 2.6 33.3 ± 2.7 mSb 1 l “Sb j 20.7 x 3.1 42.5 ± 3.6

1*7[ 38.7 ± 5.8 38.8 ± 3.1 lMCs 31. 7 x 4.8 52.5 ± 3.8 "•La 8.61 ± 0.86 40.8 x 6.5 63.0- 5.0

141 Pr 21. 5x 3.2 58.3 ± 4.1

1,1 Eu 1 28.9 i 3.2 1MEu j 61.3x14.7 oN oo »“Ho 35.6 ± 4.3 92.2 ±27.6 150 ±20

1,lTa 4.14±0.36 45.4 ± 3.7 65.0 ± 5.5 146 ±12

l **Au 44.5 ± 3.6 68.4-13.5 160 ±15 m‘Pb <34.3 238 ±29

•“Pb 22.6 ±11.3 280 ±31

*"Bi 36.1 ±12.0 226 ±27

206

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3T ANOAROS
REF. S. V. Starobdubtsev, R. B. Begzhanov. A. A.

Dokl. Akad. Nauk SSSR 174, 332 (1967)

Soviet Phys. Dokl. .12, 472 (1967)

METHOD

Islamov

EL EM. SYM. A

Pb

REF. NO.

208 82

67 St 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G LFT 7 D 7 NAI-D 4-7 135

Self- absorption measurement 7=7.23 MEV

TABU 1

Nuclein

Tranjit ion energy. MeV

r T eV

| Nucleus

Tiansition cnergy.Mtf/

rT .eV

7.64 6.47

5. nil 5.34

i - — o1- -2*

1- - i* r —ir*

1.0 ±0.10

0.33 ±0.11

!.2ft±o.38 0 . 60±o.ifl

7.64

7.1*

l> 50 5.60

i

• —n* r 2*

1

- — <» r - 2

‘

o.2h±i'.ii5

O.oS -mi. <11 o.i:i ±0.113 0. 16±0.ll4 5.0 4.70

l- -2*

1- 2 0.3fi±0.l4

2. 15±0.64 1 •» pb” 7.26 1* -.!* 0.76 to 03

FORM NBS-418

(NCV. 7- t 4-041 U9C OMM-OC 2001 0-P04 PHOTONUCLEAR DATA SHEET 207

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. B. I. Goryachev, V..S. Ishkhanov, I. V. G © Shevchenko

ZhETF Pis'tna 7, 210 (1968)

JETP Letters 7, 161 (1968)

METHOO

M. Kapitonov, and

ELEM. SYM. A

Pb

REF. NO.

208 82

68 Go 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle

TYPE RANGE TYPE RANGE

G.XN ABX THR-22 C THR- 22 BF3-I 4PI

C int MeV) = 4»0 MeV- barn.

Effective neutron-production cross sec- tion In the interaction between 7- quanta and the lb208 nucleus: a - analysis with energy steps AE - 0.2 MeV. Vertical

columns - theoretical calculations by

Bunatyan [3] (the calculated absolute

values are marked on the right, the ex- perimental ones on the left) ; b - lysis in energy steps AE - 0.5 MeV; c - analysis in energy steps AE - 1.0 MeV. Vertical colons - theoretical calculation of Balashov, Shevchenko, and Yu4, barn ^Urt - b»rn-MeV

FORM N 85=418

| IRCV. 7® 1 4.041 USCOMM.OC 2601 0*P64 PH0T0NUCLEAR DATA SHEET 208

U.S. DEPARTMENT OF COMMF-CE

NATIONAL BUREAU OF STANDARDS
REF. EL EM. SYM. A z C. J. Kapadia, V. E. Michalk and J. A. McIntyre

Nucl. Instr. and Meth. j>2, 197 (1968) Pb • 208 82

METHOD REF. NO.

68 Ka 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

G,MU-T LFT 7 7 NAI-D

(7.277) (7.277)

Used resonance scattering by Pb to vary energy of 7=7 ,27^ MEV

7.277 MeV photons from 5 re neutron capture. Did

self* absorption in scattered beam.

Table 1 Values of To and <5, for the 7.277 MeV level in ®>»Pb as obtained

to date.

Case no. To(eV) rf(eV) Reference

no.

1 0.80 ± 0.08 4.8 ± 0.4 •> 2 0.1 srg 4 g 26 eV h

) 3 0.8 ± 0.03 8.0 ± 1 c

> 4 6.5 ± I d

) 5 0.86 ± 0.06 5.0 ± 0.5 «) 6 0.7 ± 0.2 7 0.68 ± 0.09 8.00 ± 0.14 *) 8 0.56 ± 0.08 (A=n

7.50 ± 0.60 h

)

*) H. H. Fleischmann and F. W. Stanek, Z. Phys. 175 (1963) 172.

") C. S. Young and D. J. Donahue, Phys. Rev. 132 (1963) 1724.

') B. Arad. G. Ben-David, I. Pelah and Y. Schlesinger, Phys. Rev

Rev. 133 (1964) B684.

J

) B. Arad, G. Ben-David and Y. Schlesinger, Phys. Rev. 136

(1964) B370.

*) Giannini, P. Oliva, D. Prosperi and S. Sciuti, Nucl. Physics 65 0 965) 344.

') J. A. McIntyre and J. D. Randall, Phys. Letters 17(1965) 137.

*) S. Ramchandran, private communication.

*) This work.

FORM NBS-411

(R IV. USC OMM-OC 26 01 0-PS4 PHOTONUCLEAR DATA SHEET 209

U.S. DEPARTMENT OF COMMERCE

NATIONAL 9UREAUOF STANDARDS
REF. R. Moreh and M. Friedman

Phys. Letters 26B, 579 (1968)

METHOO

EL EM. SYM.

Pb

REF. NO. 68 MO 1

208 82

EGF

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G NOX 7 D 7 NAI-D 5-8 90

Compton polarimeter.

Table 1

Properties of levels populated by resonance scattering of iron capture y rays; J0 and J denote the spins of the ground and resonance levels, respectively.

Scattering

isotope

Jo Resonance

level (MeV)

Resonance

spin

Af(90, 90)/Af(90,0) exp. calc.

Transition character

208Pb 0+

7.279 1 1.16 6: 0.03 1.18 El 112cd 0+ 7.632 1 0.87 a 0.04 O.SSS Ml WlPr ! 7.632 1

2 1.03 e 0.02 1.03 El 62m 0+ 7.646 1 0.88 a 0.04 0.8S5 Ml

203XI 1+

2 7.646 $ 1.00 a 0.01 1.00 -

FORM N8S*41>

(RCV. 7*1 4*44) UICOMM.OC 26010* P64 PHOTONUCLEAR DATA SHEET 210

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. J. F. Ziegler and G. A. Peterson

Phys. Rev. _165, 1337 (1968)

ELEM. SYM.

Pb 208 32

METHOO REF. NO.

68 Zi 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE TYPE RANGE TYPE RANGE

E,E/ FMF 2-7 D 28-73 MAG-D 28-73 100

SEP IST0PS f B( EL)

1* ;g. l l . c.\pcrt«uCr.iii rc. M.. .'« cross sec. tons vc.

trar.siorrcu to tr.e r.uc.cus go" A r.crma..z..‘ ^

*. > e.ictr..;, energy of 70 MeV for excitations a: 2. Cl, j.'.'i . 7. 4.51 MoV. The solid curve is the best dc of the Gi...wV. , _ assuming the T-ssie hydrodynamical model ;..r ;..e , .......i transition multipolarity, and the dashed curve, — c -r:,.;.u.:..y normalized for other transition muiiipoiaritlu.

E

0

• 70 M.V - s.zs «.v

Norm. nx*. to LO

Pj

E

0

* 70 M.V - 3.2 S H.V

Fig. 12. Experimental relative cross sections versus momentum

transferrer, to the nucleus I’LrM normalized to an initial electron energy of 70 MeV for excitations at 5.25 and 5.60 MeV, -ad to _r. initial energy of 40 MeV for the 5.2-MeV excitation. The sc..d curve is the best lit of the G3R0W calculation assuming t..c Tassie hydrodynamical model for the specified transition ...u.ti- poiarity, and the dotted curves are arbitrarily norma..zcu . u r other transition multipolarities.

OVER

foam NBS-418

(RCV. 7<I4.«4) USCOMM.QC 26010-P44 PHOTONUCLEAR DATA SHEET 211

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Table II. Experimental values of reduced nuclear transition probabilities 3 (EL) for the excitation of a nucleus from its prour.. state to an excited state as determined by the electron scattering methods of this experiment and by other methods. The units oiS:u

are ebL where « is the e.ectron charge, a is IG*2* cm2 (1 b), and L is the mu.tipo.arity o: the transition. B(EL).V

is me sir.gie-partieic estimate of Eq. (10).

This experiment

-

3 (EL) Other experiments

Nuclide

Level Transkion B(EL. 0 —» £) G- B ^EL. 0 —• L) (MeV) character «ri* BiEL).P Ref. Pb2" 4.09 £2 0.23=0.02 6.2 a (p,p')02Q Pb2" 4.c-:c"\ 4.125"/ £2 0.26=0.02 7.0

c

ci

(c,a')C.33

(P.p'jO.'.i Pb2" 4.07 £2 0.30=0.02 8.1 c (a,a’)0.33 e 0>,P')0.17 Pb2" 2.65 £3 0.64=0.04 35 a' (p,p')0.33 Pb2" 2.625"\ 2.664"/ £3 0.67=0.04 37 cd

(a,a') 0.36

(P,P')0.32 Pb2" 2.614 £3 0.72±0.04 39.5 c (a,a';0.57

i (e,«')0.53 S (p,p')0.67 e (P,P')0.36 h (C^C-^O.SS

i (p,/)0.34

i

C»,/;0.97

(»,»')0.71 Bi2" 2.6* £3 0.67=0.05 37 c (a,o')0.57

f (e,e')0.55 m (P,P')0.65 Pb2" 4.32 £4 0.22=0.02 25 a (?,/)0.053 Pb2" 429 £4 0.21±0.03 24 c (a,a')0.12 Pb2" . 4.31 £4 0.23=0.02 26 c (a,a')0.13

f («,«') 0.24 Pb2" 5.25 £3 0.13±0.03 7.2 € (^00.057

(£4) 0.14=0.07 16 Pb2" 5.6 £3 0.09=0.03 5 C (a,a')0.16 Pb“* 6.2 £2 0.07=0.02 2

(£0) Pb2" 3.2 £5 0.06±0.02 14 C (a.aOO.OS

e (p,/)0.034

Hatele and R. Woods, Phys. Letters 24. 579 (1966). Letters 22. 659 (1966). Letters 22. 492 (1966). Rev. 123, 923 (1961) ; and H. W. Kendall and J. Oeser, ibid. 130. 245 (1963). Xucl. ?hys. 79, 495 (1966), references cited therein, and see text oi this section,

etters 5, 256 (1963). -..4*. JIC.SUIJ c* o*.. .vuci. rnys. os. vt (ivoo). unresolved deahs. J C Kafele and R. Woods. Phys. Letters 24. 579 (1966).

a. riinds, H. Marchant, J. H. Bjerregaard. and O. Nathan, Phys. Letters 20, 674 (1966).

212
rep. H. Beil, R. Bergere, P. CarLos and A. Veyssiere

C.R. Acad. Sci. Paris 269 . 216 (1969)

ELEM. SYM. A

Pb

I z

208 82

METHCO RE*. NO. 69 Be 9 egf

reaction RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE range TYPE RANGE

G,XN ABX 7- 19 D 7-19 MOD- I 4PI

Er = io MeV ( ,a

). Les sections enioaccs 7(7, n), 7(7, 2n), 7(7, 3 n) et 7(7, 4 n)

qui constituent au moins dc 99 % de la section cfficace 7X ( 7, total) ont ete mesurees separcment avec un scintillatcur liquidc, charge au Gd, detectant

les photoneutrons avec.une grande elTicacite d’environ 60 %'(**). La cible

;de.plomb contenait 91 % de 1#, Pb.

form NBS-418

(REV. 7.1 4-«4l use OMM« O C 26010-P44 PHOTONUCLEAR DATA SHEET 213

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARC c
C. D. Bowman, B. L. Berman, and H. E. Jackson

Phys. Rev. J/78, 1827 (1969)

METHOD " ~

EL EM. SYM. A z

Pb 208 82

REF. NO. 69 Bo 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N SPC THR- 10 C 7-10 TOF-D 1 35

Tablular data given. G- WIDTH

Table VI. Resonance parameters.

Isotope This work

Energy in (», 7) b e (V This work d

t?J

c b

Spectroscopic data b d

Pb**

(keV) 3.00

(keV) (keV) 3.02

(eV) (eV) 0.08±0.03*

(eV) 0.078±0.005

(eV) l

10.4 10.2 0.06±0.02 0.13±0.02

16.6 16.7 16.2 0. 14±0.04 0.66±0.07 0.3±0.07 (>0) ( 2+) 25.3 <0.2 29 29.5 <0.4 0.20±0.06 0.35±0.13 (>0) ( 2+

). 37 37.6 <0.4 0.7±0.1 (>0) ( 2+) 40.? 41.7‘ 41.0 4.13 4.13 3.8d=0.4 4.13±0.9 0 (I*) Pb» 3.4 3.36 0.14±0.03 0.077±0.006

10.8 <0.05 0.06±0.01

11.4s 11.3 0.54±0.08 0.07±0.02

12.3 12.2 0.05±0.03 (>0) 14.6* 14.2 0.55dfc0.10 0.20±0.04

16. 6» 16.5 16.5 0.63 0.63±0.03 0.70±0.08 0 . 8±0. 12 (>0) (I-) 20.1 19.6 0. 169±0.08 0.32±0.06

21 21.8 <0.05 0.28±0.1 0.18±0.07

25.1 25.1 24.9 0.4±0.15 0.28±0.03 l.ldsO.2 0.77±0.12 (>0) (*-)

Pb*"* 1.55 0.40±0.06

7.34 3.4±0.30

10.2 1 . 0±0. 1S 16.0 0.50±0. 15

•

33.6

49.9

* The statistical factor g ii different depending on whether neutrons or photons excite the nucleus. To make easier a comparison of the results, the present values for PbTM and PbTM have been multiplied by U>e ratio (2/' + l)/ (2/" + l) where f' is the spin of the target for the photonuclear experiment and

I is the target spin for the inverse experiment. The PbTM values are unmndified.

* Reference 4. * Reference L

* Reference T.

* The uncertainties in the values for gT,. for all isotopes do not include a ±15% uncertainty in normalization,

* The present data were normalized at these resonances using the data from Ref. 7. * These peaks are associated with transitions both to the ground state and the first excited state of

Pb«<. The excited-state transitions are the stronger (see text). For PbTM. the energies have not been transformed into the (f. 7) system. uwiwnuwkbAn snee 1 214

form N8S-418

(REV. 7<sl4°«4> USC OMM*OC 2e010»P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAUOF 3TANDAROS
C. D. Bowman, R. J. Bag lan and B. Phys. Rev. Letters 2^, 796 (1969)

METHOD

L . Be rman

tL CM. 5TM.

Pb 208 82

REP. NO.

69 Bo 4 hmg

reaction RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N ABX THR-3 D 8 TOE’-D 135

Erratum attached:

Phys. Rev. Letters 24, 193 (1970)

Excitation anargy — MoV

7.42* 7.47* 7.327 7.377 7.627 7.*78 7.728

Neutron anargy — kaV PIC. X. Threshold photoneutron cross section In mb/sr for natural lead derived from the neutron spectrum emitted at 135* as a function of both laboratory neutron energy and Incident photon energy. Levels not Pb209 are designated by vertical arrows.

WO NM NBS-4 18 (RCV. 7-I4.MI UICOUM.OC 100IO.PS4 PHOTONUCLEAR DATA SHEET 215

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
FIG. 2. The data of this figure are taken from Fig. 1. The solid curve is a shape fitted to the data using the resolution determined from the narrow peak at 37.3 keV. The spins for the 37.3- and 40.7-keV peaks are

2* and 1“, respectively (Ref. 14), so there is no inter- ference between them.
L. G. Moretto, R. C. Gatti, S. G. Thompson, J. T. Routti, J.

Heisenberg, L. M. Middleman, M. R. Yearian, R. Hofstadter

Phys. Rev. 122, U76 (1969) _____ _____

H. Pb 208 82

REP. NO.

69 Mo 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE TYPE RANGE TYPE RANGE

E,F ABX THR-999 D 60-999 TRK-I DST

G,F ABX THR-999 C 60-999 TRK-I DST

Tabular data given; angular distribution isotopes 999=1 GEV

Fio. 2. Electron-induced fission cross-section data. Different symbols for the same isotope refer to different targets. FtO. 4. Bremsstrahlung-induced fission cross section per equivalent quantum.

-it

form NBS-418 MIV. 7-I4-44I USCOMM-OC 24 01 0-P4 4

Fic. 8. Photofission cross section as a function of energy for MPb (open squares) as obtained by unfolding the electron- ___

induced Staton cross-section data (diamonds) with the £1 kernel. The solid line is the fit to the electron-induced fission cross sections p 1 7

which is obtained by folding back the photofission cross section

into the £1 kernel.

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS
« C r .

S. Ramchandran and J. A. McIntyre

Phys. Rev a 17%, 1153 (1969)

CL CM. 3 r Mo

Pb

A

208

L

82

METHOD REF. NO.

69 Ra 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G f G LFT 8 D 8 NAI DST

W(0) ~ [l + a P

2 (cos6)] 8 = 7.277 MEV

form NBS-418

(REV. 7.14.64) USCOMM.OC 26010.P64

[over]

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 218
•

L.

V.

Groshev.

V.

N.

Lutsenko.

A.

M.

Demidov,

and

V.

I.

Polekov.

Altai

of

Comma

Spectra

fromR.

Moreh

and

C.

Ben-Yaacov,

Nuclear

Research

Center —

Neiev

Report.

NRCX-180.

IWI,

Jtadloffrr

Capture

of

Thermal X

eulroui

(Pergamon

Press.

Inc..

New

York.

1959).

(unpublished). *

E.

8.

Shera

and

D.

\V.

Hafemelster.

Phys.

Rev.

ISO.

894

(1944). •

L.

V.

Groshev.

A.

M.

Demidov.

G.

A.

Kotelnikov.

and

V.N.

Lutsenko.

Nud.

fhys

98,

485

(1944) ; '

*H,

H.

Bolotin

(private

communication

from

L.

M.

Bollinger).

G.T,

Esraa

and

A.J.

Tavendale.

Nud.

Instr.

Methods

24,

181

(1944). *

See

Ref.

24a. i <S on

If If o o Z 2

H- H- — o2 i

Ov ? I ? i

K»

© ^ i I 2 - s

Hb « o-o 3 £

if if

9>

Ifo 5i w po

K» Kd

Q ^ l

O*i

tn1 I— ? |CN

i. i 7 5

NO1 H “ JIa- J

If If o os

If 5 s $

H-o

Ifo 2 8 22

Ifo 3 3 3

If If 2 1 i o O 0 >i bi

H-o2 8 S

If if o o 2 8 3 3

If If

00

IfOO|

H-oo 5 2 2 2

H-Os3

HH-osOh i g i s

<; “

5*2

2* If ^ =

SfQj

2^ >

<% • j; <ss-o

3*2 N

2.2

219

Table

II.

Experiment

compared

to

theory

assuming a

pure

dipole

transition.
REF. v. V. Verbinski and'W. R. Burrus

Phys. Rev. i77, 1671 (1969)

EL EM. SYM.

Pb 208

z

32

METHOD

REP . NO.

69 Ve 1 hrng

REACTION RESULT

EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

type range TYPE RANGE

G,XN SPC THR-33 c 33 TOF-D 0-14 DST

ENRICHED PB2U8

Tails II. (?>») reaction* induced by 33-MeV eixKpoint

thin-target brenustrahlung.

Target

£y (iant retonance peak (MeV) t T- (MeV)

Threshold*

(>.») (t.F«) (tJr). "A1 —22 53* 3.07±0.1 13.1 19.4 24.4 93* 3.07*0.1 ••Pb . -13 90* 1.30*0.1 8.0 14.8 144

141* 1.43*0.1 "Pb —13 90* 1.32*0.1 7.4 14.8 14.1 141* 1.32*0.1 "Bl —13 90* l*«*0.1 7.4 II.

1

I4J

141* 1.47*0.1

• Pram plot at l*C*<£)/»•£"] nran 8.

Ftc. 7. Evaporation-analysis

plots of neutron spectra from

(y,*) reactions. The logarithmic

plots of * (E)/(#«/i*'“) show *

moderately good straight-line ^

fits. Values of T, the magnitude

of the reciprocal slope, are

jj shown. In some cases, T is -

slightly higher at 90° than at

141*, indicating that a weak

component of direct emissions

is present. These are preferentially emitted at 90*, the direc- tion of the electromagnetic

field.

rosM NBS-41S

IREV. 7.14-94) USCOMM-OC 2901 0-P64
REF. C. D. Bowman, R. J. Baglan, and B. L. Berman

Phys. Rev. Letters 2^, 193 (1970)

mstmoo

EL £M. SYM. *

Pb 208 32

REF. NO.

70 Bo 1 hrag

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N ABX THR-8 D 8 TOF-D 135

ERRATUM FOR o9 BO 4

PRL 22 , 796 (1969)

foam NBS-418

(REV. 7-1 4-641 USCOMM.QC 26010-P64 PHOTONUCLEAR DATA SHEET 221

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANQAROS
REF. C.D. Bowman, R.J. Baglan, B.L. Berman, T.W. Phillips

Phys. Rev. Letters 2^, 1302 (1970)

mfthoo

|ELEM. SYM. A

! »

| REF. NO.

i 2

208 82

70 Bo 2 hmg

excitation

ENERGY

SOURCE OETECTOR

REACTION RESULT TYPE RANGE TYPE range

ANGLE

G,N ABX 7 - 9 c - 10 T0F-D 0-1 DST

(7.38 - 8.14-3) ( - 9.8)

SEVEN 1+ LEVELS

^ From threshold photoneutron cross-section and angular-distribution measurements on

:e*Fb, seven 1* states have been detected, which have a total A/1 strength of SI eV. This

A/1 strength, centered at an excitation energy of 7.9 MeV and spread over a range of 700 keV, constitutes at least half and perhaps all of the total Afl strength obtained from shell- model calculations.

Tabic I. **Pb resonance parameters.

k*A

2X2 *2

42. | / ^ 90®

do 1 Sr 1 135° J* . J

w

r

TOn U«v) Multiplicity Recoil Ang. Diet. O* Final (•V)

50.2 0.30 l.kl * 0.20

• l" l" 0.23

3T.5 1.8 0.6k 1 0.09 2* 2* 0.6k

t»Qo8 7.2 1 1* 1“ k.8

90-0 2.6

liU 2.0 1.5k 1 0.22 1* X* 1.6

129 5.

A

1 $ 2 (3. 6,1. 9)

162 16.0 1.61 2 0.23 1.1*5 t 0.20 1* 1

*

12.6

257 26.2 1.10 2 0.15 1 iM* - 1"

17.5

313 U.O 1.10 2 0.15 1.13 2 0.16 r.i* 1* 7.7

5**7 12.3 1 . 1k 2 0.16 0.9k 2 0.13 i*.i* i'd*) 8.2

620 17.2 1.80 2 0.25 1.81 J 0.25 1* 1*

lk.

6

660 8.6 1.15 1 0.16 1.37 2 0.20 1"

1

* 6.3

:60 10.0 1.51 2 0.21 l.k6 2 0.20 1* 1

* 7.8

4 Errors in measurement of area are less than 10%. The integration* were carriel Owt on the 135* data of Fig. 1. 'No states with values larger than 3 eV were observed between 860 and 1200 keV.

e Ref. 8. [ E . G . Bilpuch, private communication.]

[over]

form N8S-418

(REV. 7-1 4.64) USC OMM-OC 26010-Pe4 FHOTONUCLEAR DATA SHEET ±12

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
FIG. 1. The 135* differential photoneutron cross

section for :M ?b as a function of both the energy of the detected neutron and the corresponding excitation energy of the nucleus. The data of the two plots were taken

with different detectors, possessing different resolution and background characteristics. The arrows in the upper plot denote resonances associated with transitions

to states ocher than the ground state of 201 Pb. The data

of the lower plot were taken with a natural lead sample — hence, the presence of contamination from resonances in :i: ?b (arrows). The dashed line in the lower plot

represents background in that measurement. The error Gags in both plots indicate statistical uncertainties

only.

223
REF. Jo H. Heisenberg and I. Sick

Phys. Letters 32B . 249 (1970)

I EL EM. SVM.

MFTHOO

Pb

! z

208 32

! REF. NO.

i 70 He 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

T i pe RANGE TYPE RANGE

e.e/ 3 D 2Z.S.502 MAG-D DST

(2.6)

q 0.5 fm * to 2.8 fm 1 2 2..c MEV

Analyzed for transition charge density

P tr

(r) ~ r

'J^P( r ? c tr>

ztr

Pi= [l+exp((r2-c2

)/z

2

)]

_1

Pa= [1 + exp( ( r-c)/z)

]" 1

Fig. 3. Transition charge density host fit — Rl*.\ calculation of ref. [3| RPA calculation of ref. | l|.

3

)

V. Gil let, A.M. Green and E.A.

Sanderson, Phys. Letters _11, 44 (1964;;

Nucl.Phys. 88 (1966)321.

4

)

J. Blomquist , Phys. Letters 28, 22

(1968).

Tabic 1

Shape c

lr *tr

1 6.114 fm 0.562 fm

2 6.250 fm 2.930 fm

form NBS-418

in E V . 7.1 4.«4I uscomm.oc 2aoio-p««

u.s. department of commerce

NATIONAL BUREAU OP STANOAROS

PHOTONUCL EAR fUTA sheet 224
B.S. Ishkhanov, I.M. Kapitonov, E.V. Lazutin, I.M. Piskarev,

and O.P. Shevchenko

Yad. Fiz. 12, 682 (1970)

Sov. J. Nucl. Phys. .12, 370 (1971)

MFTHOO

I EL EM. SYM.

| A

i

l Pb 2C8 82

RE F . NO. 70 Is 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

ABX 7-18 7-18 BF3-I 4-PI (7.^ - 17. M (7.1-17A)

Table L Locations and integrated cross sections of individual resonances
ref. R. Moreh, S. Shlorao, and A. Wolf

Phys, Rev. C2, 1144 (1970)

EL EM. SVM.

Pb 208 32

MCTMOO REP. NO.

70 Mo 2 hrag

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 7 D 7 SCD-D DST

(7.279) (7.279)

7=7.279. LET

TABLE HI. Summary of the results of spins t parities, and total widths of resonance levels excited by y rays obtained from neutron capture in iron. Parities in parantheses are uncertain.

Isotope Energy - (MeV)

i‘\Er -E,\

(eV) J'r Transition r,/ry (±8%) (10-1 eV) MCr 3.S33 13 ±1 0* 1

• e • 0.90 750 ±200

«Si 7.646 14 *1 0* 1- El 0.64 480 ± 50 *Ge 6.018 4.5x0.

5

0* 1- £1 0.19 120 ± 15

* 5As 7.646 7.4 ±0.3 3/2- 1/2?

J ... 0.11 360 ±100 * 09 Ag 7.632 9 ±1 1/2- 3/2 ... 0.7 2 ± 1

lt: Cd 7.532 4.8 ±0.4 0* 1- El 0.55 36 ± 15

l:, La 6.013 3.2 x 0.6 7/2* 7/2“ El 0.50 51tl4 utpr 7.632 u.4:& 5/2* 5/2* Ml 0.46 72^4

:osTl 7.646 9.3± 0.3 1/2* 1/2?”> ... 0.53 980 ± 90

208pb 7.279 7.1 ±0.3 0* 1* Ml 1.00 730 ± 60

TABLE IV. Effective elastic scattering cross section

<ffr > = o7(ro/rr )*(x0 ,f 0), where 6, J, r0 . Ty were

taken from Table HI. The temperature of the scatterer was 300*K, while that of the iron y source was 640*K.

Target

Resonance

energy (MeV)

<M

(mb)

50 Cr 8.338 905

**XI 7.646 569

:4 Ge 6.013 61

75 As 7.646 4.4

109Ag 7.632 3.5

tlJ Cd 7.632 193

1MLa 6.013 39

,4I Pr 7.632 20

20ST1 7.646 574

2»*Pb 7.279 5560

FORM N8S-41S

IRCV. 7- I 4.04) USCOMM.OC 2®0 1 0- PQ4 PH0T0NUCLEAR DATA SHEET 226

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAOOS
A. Veyssiere, H. Beil, R. Bergere,

Nucl. Phys. A159 . 561 (1970)

METHOD

P. Carlos, A. Lepretre EL CM. SYM.

Pb 208 82

REP. NO.

| 70 Ve 1 egf

REACTION excitation SOURCE OETECTOR

RESULT ANGLE ENERGY TYPE RANGE TYPE RANGE

G,N ABX 7-31 D 7-36 BF3- I 4PI

G,2N ABX 14-31 D 7-36 BF3-I 4PI

G,3N ABX 23-31 D 7-36 BF3-I 4PI

G,4N ABX 30-36 D 7-36 BF3-I 4PI

330+

Fig. 1. Partial photoneutron cross sections <Jy,„ a

y, j„ <7,. j«, and <ry

.*« of ,0,Pb. We also show th« descending part of the unique Lorentz line giving the best fit to the experimental <xytT{E) curve.

Tabu 5

Tr.tcjrated cross sections and sum rule values of J0, Pb and '* 7 Au. The notation used is defined

in the text

Refs. Em

(MeV)

*

o

(McV • b)

*o‘ (McV b )

o0A

0.06 AZ

a„'A

0.06 NZ (mb)

<7-1 (mb - MeV-')

') 22 4.10 ±0.06 5.10 1.37 1.71 280 20.5

J -*Pb •> 28 2.91 ±0.29 2.94 0.98 0.99 14.1 ±1.4 ”> 23 3.91 -.0.59 5.18 1.31 1.74 1 8.6 i2.4 present work 25 3.43 ±0.23 4 00 1.17 1.34 251 ±20 .19.1 ±2

') 22 3.00 ±0.05 3.99 1.06 1.40 200 14 •’Au •) 25 2.97 ±0.3 3.53 1.05 1.24 15.3±l.5

pre-ent work 25 3.48 ±0.2 4.07 1.23 1.42 238 ±20 1 7.2 ±2

1 J. Miller, C.Schuhl and C.Tzara,

°R.R.Harvey, J.T. Caldwell, R.L.

Phys. Rev, 136 (1964)B126.

'S.C. Fultz, R.L. Bramblett, J.T.

Phys. Rev. .127, (t962)1273.

^T.Tomimasu, J. Phys. Soc.Jap.25

Nucl.Phys._22 (1962)236.

Bramblett and S.C. Fultz,

Caldwell and N.A. Kerr,

(1968)655.

[over

j

form NBS-418

IRCV. 7-1 4.Q4) U3COMM-OC 2€0 1 0- P6 4 PHOTONUCLEAR OATA SHEET 227

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Fig. 3. Total photonuclear cross section a

7, T (£) of J0, Pb and best Lorcntz line fit corresponding to parameters <"ven in table 3.

228
ref. R. J. Bag lan, C. D. Bowman and B. L. Berman

Phys. Rev. <£, 672 (1971)

EL EM. SVM. A

P b 208 82

method I REP. NO.

i

i 71 Ba 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N ABX 7- 10 C 7-10 T0F-D 135

(7.37-9.8)

FIG. 6. The 135* differential threehoId photoneutron croee section for mPb, at low energies (see caption to Fig. 4). The 41-keV peak la asymmetric. (See textj

FIG. 4. The 135* differential threshold photoneutron cross section for :0TPb at low energies versus the energy of the emitted neutron (lower scale) and the excitation energy (upper scale). The arrows Indicate peaks which decay to excited

states of the residual nucleus (ES), or peaks owing to contaminating Isotopes in the photoneutron sample. The Inset shows the :#t Pt>(y, a) cross section averaged with a square 40-koV wide smoothing function.

Also see

:

R. J. Baglan et al.

Phys. Rev. C3, 247

5

(1971)

[_over

FOAM NBS-418

(R EV. 7*1 4-04) USCOMM-OC 2601 0* P64 PH0T0NUCLEAR DATA SHEET 229

u.s. department of COMMERCE

N A T I ON AL BUREAU OF 3TANOAROS
TABLE rv (Continued) s E.OcbV)

GS from neutron- EL E" /r r r#r or E„ (keV) induced reactions Nucleus (keV) (MeV) (eV) ES J

* (eV) (This work) (Ref. a) (Ref. b) (Ref. c)

»*Pb 2.9* 7.379 0.16 3.0 8.9* 0.62 ES

9.9* 7.386 0.12 GS* 10.1 15.9® 7.392 0.17 GS* 2* * 0.06 16.2 17

24.9 * 7.401 <0.40 GS«* 25.3

30.2 7.406 0.30 GS r f 0.23 30.7 29

35.4 0.22 ES

37.5 7.413 1.8 GS 2* 0.64 38.1 37

40.8* 7.417 7.2 GS 1"* 4.8 41.4 41

90.0 7.466 2.6 GS 91.3

98.6 1.9 ES

l* r 114 7.490 2.0 1.6 115

129 7.506 5.4 GS 131 129

138 3.6 ES

156 7.533 0.98 GS 158

166 7.543 0.90 GS 168

182 7.559 16.0 GS i*r 12.6 184 257 7.634 26.2 GS i- f 17.5 260

299 4.0 ES

318 7.696 11.0 GS i*» 7.7 321 493 r.872 3.2 498

547 7.926 12.3 GS i-(i*) r 8.2 553

558 7.937 4.6 564 620 7.999 17.2 GS i* f 14.6 627

659 8.039 8.6 i*t 6.3 666

860 8.241 10.0 GS !' 7.8 869

*®*Pb 1.5 d 8.085 0.4 GS d 1.6 7.3* 8.090 3.4 GS* 7.5 10.3* 8.093 1.1 GS* 10.5 12.9* 0.12 ES

16.1* 8.098 0.40 GS* 16.4 28.5 8.111 0.54 29.0 33.7* 8.116 2.5 GS* 34.3 40.0 8.123 0.86 40.7 50.7* 8.133 1.3 GS* 51.5

53.6 8.136 0.52 54.4 68.9 8.152 1.5 69.9

72.1 8.155 1.4 73.2

75.1 8.158 0.90 76.2 88.9 8.171 4.5 90.2 104 8.187 4.9 106

*See Ref. 6. d See Ref.. 3; resonance not seen in the present work.

See Ref. 10; approximate energy values taken from e Also seen in Ref. 3; resonance parameters from pres- cross-section figure. ent work. ®See Ref. 13. f From angular distribution measurement (see text).

^C.D. Bowman, B.L. Berman, and H # E. Jackson, Phys. Rev. 178 . 1827 (1969).

^J.A. Biggerstaff, J.R. Bird, J.H. Gibbons, and W.M. Good, Phys. Rev. 154. 1136 (1967).

^J,A# Farrell, G.C. Kyker,Jr., E.G. Bilpuch, and H.W. Newson, Phys. Letters

12, 286 (1965).

13 E.G. Bilpuch,- K.K. Seth, C.D. Bowman, R.H. Tabony, R.C. Smith, and H.W. Newson,

Ann. Phy». (N.Y.) J4j 387 (1961).

230
REF. R. J. Baglan, C. D, Bowman and B. L. Berman

Phys. Rev. Cl, 672 (1971)

EL EM. SVM. A

Pb 208 82

METHOO RE*. NO.

[Page 2 of 2]J 71 Ba 2 hmg

RESULT EXCITATION SOURCE OETECTOR

REACTION ENERGY TYPE RANGE TYPE R AN GE angle

Excitation Energy (MeV)

7.728 7.829 7.929 8.030 8.130 8.231 8.331

FIG. 7. The 135* differential threshold photoneutron cross section for ]MPb, at high energies (see caption to Fig. 4). The dashed line Indicates our best estimate of the background level.

FORM NBS-418

1R E V. 7-1 «.«.! USCOMU.DC 2S010-P44 PH0T0NUCLEAR DATA SHEET 231

U.S. (DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS
REF. H. Dahmerr, F. Dreyer, J. Staude and H. H. Thies

Nucl* Phys. A164. 140 (1971)

j El. EM. SVM.

I Pb

I z

208 82

method ref. NO.

i 1 71 Da 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,P ABX 15-33 C 12-33 ACTI

4PI

INC G.PN

Fig. 2. The evaluated cross section of the reactions J0, Pb(-/, p)

207 TI — :os Pb(y, pn)20‘TI. The unfolding technique of Penfold and Leiss without smoothing was applied, bin width 2J£. The set of

experimental yield points was divided in two “interlacing sets". The vertical error bars show the

statistical errors, the horizontal ones the increasing bin width.

mOf

-7

4-

J2-

20ePb([Pl **°sPb(Xpn) m

i\ - , 0~ 1 I

1 ' M

/•.i j',

1 ' 1

1 20 25 30 Mel/

Fig. 3. The same cross section as in fig. 2, evaluated by application of the least-structure method

of Cook ') lo the whole set of yield points. The vertical error bars show the statistical errors, the

horizontal ones the energy resolution defined by Cook 7

). 7

3.C. Cook, Nucl. Instr. 2£ (1963) 256.

form K8S-4I8

l»CV. 7-1 4-641 use OMM-OC 26010-P64

U.S. (DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF 3TANOAROS

PHOTONUCLEAR DATA SHEET 232
REF.

MCTHOO

B.I. Goryachev, B.S. Ishkhanov, and V.G. Shevchenko

Proceedings of the Second Symposium on the Problems

of Nuclear Physics, Novosibirsk, USSR, June 1970

(Kolybasov, V.M. , Ed., Izdatel'stvo Nauka, Moscow 1971),

pp. 362-78

EL CM. SYM. A

Pb

REF. NO.

Z

208 82

71 Go 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE

G, XN ABX 7- 17 C 7- 17 MQD-I 4PI

11 12 13 H IS IS 17 j- f'l ev

$xr. 5. CeReHHe peaxmit Pb

i0t (y,n).

form N8S-41S

IR EV. 7.1 4-441 UJCOMM.OC 24010-P44

(over)

PHOTONUCLEAR DATA SHEET 233

U.S. DEPARTMENT OF CCMMtPCc

NATIONAL BUREAU OF STANG4K0S
T a 6 o i a 2

Zr t0 Pb 10t

£>(M3b) £»(M 3b)

/nt(M 3B*

7<* MOH

)

Ini (%)

7,85 19,5 0,58

8,06 12,83 0,36

8,38 16,58 0,47

8,78 18,61 0,53

9,03 33,4 0,96

9,40 34,2 0,98

9,81 71,1 2,04

10,29 72,2 2,07

10,62 63,8 1,33

10,93 76,6 2,20

11,24 145,0 4,15

11,78 247 7,10

12,4 12,3 265 7,81

12,6 12,84 331 9,5

13,1 13,25 344 9,37

13,7 13,78 214 6,14

14,2 14,08 316 9,06

14,6 14,66 245 7,03

14,9

' 15,13 210 6,02

15,3 15,73 88 2,52

15,8 18,40 114 3,26

16,5 17,13 98 2,31

16,9 17,95 150 4,30

17,3 18,76 78 2,24

18,8 19,52 88 2,52

19,3 20,83 135 3,87

21,3

22,0

22,8

23,5

24,2

(25.5)

27,8

234
REF.

E. J. Moniz, I. Sick, R. R. Whitney, J. R. Ficenec, R. G. Kephart

and W. P. Trover

Phys. Rev. Letters ^6, 445 (1971)

EL EM. SYM.

Pb 208 82

METHOD REF. NO.

71 MO 3 hmg.

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ ABX 0-240 D 500 MAG-D 60

Fig. 1. Cross sections d

lu/dUdf. versus electron energy loss w =* € , —< 2 for inelastic scattering of 500- McV electrons at 60* from (a) carbon, (b) nickel, and

(c) lead. Solid lines are the results of the Fermi-gas

calculation with the nuclear parameters indicated on

the figure.

Table I. Nuclear Fermi momentum i F and average

nucleon interaction energy l determined by least- squares Fit of theory to quasiclastlc peak.

Nucleus (MeV/c) a

t (MeV) b

3 Li* 169 17

*c' : 221 25 tzMg

24 235 32

J0Ca4# 251 23

juNi5*- 7 260 36

*»YM 254 3D

snSn"*'

7 260 42

nTa'"' 265 •12

nA'\>m 265 •II

a The fitting uncertainty in these numbers is approximately *5 MeV/c.

bThe fitting uncertainty in these numbers is approximately ±3 MeV. Simple estimates for € give numbers

in reasonable agreement with those in the table

FORM N3S-418

(R EV. 7- I 4*641 USCOMM.OC 28010-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF ST ANOAROS PHOTONUCLEAR DATA SHEET 235
REF. M, Nagao and Y„ Torlzuka

Phys. Letters 37B. 383 (1971)

ELEM. SYM. A

Pb 208 82

METHOD REF. NO.

71 Na 2

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

E,E/ LPT CM 1 1 D 183,248 MAG-D DST

6 LEVELS

Table 1 Parameters (or the Taasie transition charge and B(EL) values

3(EL)(W.u.)

(MeV)

fc tr (fa) «tr

(fa) present

(e.e»)

<e,e')

[8] (P.P'>[10|

(a. a') [HI

RPA

(41

2.61 3* S.8 * 0.5 3.2 a 0.2 43 t 5 39.5 a 2.0 32 41.1 13

3.20 5* 5.58 * 0.05 2.98 a 0.03 11.1 t 1.4 14 t 5 17 14.1 3.59

3.70 5“ 6.55 s 0.09 2.74 a 0.15 8 * 2 3.9 3.57 4.07 2* 6.9 23. 8.1* 6.1 a 0.5 6.6 8 0.66 4.30 4* 5.8 23 15 26 a 2 11.4 14.8 0.88 4.40 6* 11.7 The seme value has been adopted of ref. (8). (j. F. Ziegler and G. A. Peterson, Phys.. Rev.

165 (1968) 1337.

)

form N3S-418

(R EV. 7-1 4» 64 ) use omm.oc asoio-p««

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATASHEET 236
F iu. 1. The (e , e*) form factor* for eacited ftatea in 2°*I’b. The dotted curve repreaenta the Stanford data

and the aolid curve* relate to the Taaate model where

r lr and a tr are indicated for e0 • $.303 fm and

to • 2. STS fm. The daahed curve are the RPA form

factor*.

237
F„ R. Buskirk, H. 0. Graf, R. Plcchan, R. Theissen, 0. Tlcze

and Th. Walcher

PICNS-72, p. 199 Sendai Pb 208 82

»e w. ho.

72 Bu 14 hvm

reaction RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

Y V PC PAN GC rvPe pansc E,E/ FMF 7- 22 D 50, 65 MAG-0 DST

LEVELS 7.3-14. 1

Figure 1 The spectrum of 28,Pb (e, e') for 50 MeV and 93*. Note the suppressed zero of the ordinate scale. Scaciscical errors are the size of the circles. Tha

full line is the radiation tail plus background which

was subtracted. The dashed curve is the extrapolation

of the assumed El contribution. The area becween the vertical dashed lines has been used to evaluate the

E2 cross seccion.

Figure 2 Ratio of inelastic cross section (sum of the cross sections of the 10.2, 10.6, and 11.2 MeV transitions

as shown in Fig. 1) to Mott cross section as a function of scattering angle. The curves are DWBA cal- culations with B(E2, 0) • 2.6 * 10 3 fm 4

.

roKM N3S-4IS

IRCV. 7« t 4» 641 USCOMM-N89-OC 238 phoTOi
F. R. Buskirk, H. D. Graf, R. Pitthan, H. Theissen,

Th. Walcher

Phys. Lett. 42B , 194 (1972)

method

0. Titze,

ELEM. SYM. A

Pb 208

| REF. NO.

82

I 72 Bu 19 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,E/ ABX 9- 17 D 50, 65 MAG-D DST

Fig. 1. The spectrum (circles) for 65 MeV and 93*. S<>’t the suppressed zero of the ordinate scale. Statistical errors ire the size of the circles. The full line is the radiation tail ; l-» background which was subtracted. The dashed curse is the El contribution assumed. The area between the verticil dashed lines has been used to evaluate the E2 cross

JWdR-xlO5 (do/dni^TT

30-

20 -

10 30-

20 -

10

7-i

<?\TT

t i

SOMeV

65 MeV

50MeV

Fig. 2. Ratio of inelastic cross section (the sum of the cross sections of the 10.2, '0.6 and 11.2 MeV transitions, as shown in fig. 1) to Matt cross section as a function of scat- tering aitgle. The errors are discussed in the text. The curves

are DWBA calculations with S(E1,0) =13 fm 2

, S(E2,0) =

2.6 X 10

3 fm4 and 5(E3,0) =3.7 X 10

s fm6 for the upper, middle and lower diagram, respectively.

Low-energy inelastic electron scattering experiments have been performed for 208 Pb with excitation energy rang- ing from 5 to 22 MeV. Resonances are observed at 7.3, 7.9, 8.9, 10.2, 10.6, 11.2 and 14.1 MeV. For the triplet at 10.2, 10.6 and 11.2 MeV, evidence is presented for an E2 assignment, with a reduced transition probability B (E2,0) * (2.6 ± 0.9) X 103 fm4

.

form N3S-418

» ev. 7.1 4-84J OSC O MM-N 8 S-0 C

U.S. OEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANCARCS PH0T0NUCLEAR DATA SHEET 239
REF. J. Friedrich

Nucl. Phys. A191 . 118 (1972)

ELEM. SYM.

Pb 208 82

METHOO

Page 1 of 2.

REF. NO.

72 Fr 5 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

E.E/ ABX 2-4 D 124.167 MAG-D DST

Cross section cm*/sr 208 Pb

5~ level at 3.2 McV

til to both the t24and

167 MeV data

(fit 3, table 5

)

tit to the 124 and 167 MeV separately

(fit l and 2, table S)

J E0*124MeV

f $E0

s 167MeV

,, j upper Limit —r— i i 1—i

1 1 r

60 70 80 90 100 110 120 130 \

ISO scattering angle

Fig. 6. Same as lig. 4; 5~ level at 3.2 MeV.

Cross section cm^/sr 208 pb

5" level at 3.7 MeV

fit to both the 124 and

167 MeV aata (fit 6,

>the 124 and 167 McV data separately

(fit 4 and 5, table 5)

scattering angle

I i i i i i f

60 70 80 90 100 110 120 130 140

Fig. 7. Same av fig. 4; 5‘ level at 3.7 MeV.

3 LEVELS TAB DATA

Cross section (cm^/sr 208

Fit lo both the 124 and 167 MeV data (fit 14, table 4)

fits to the 124 and 167 MeV

data separately

( fits ii and 13 table 4 ) -calculated with P. from ref. 1

Pb

3*level at 2.6 McV

:ivnng ancle

i r t 1 r~ r

t

r — — j«-

• SO 60 ’0 cO 'tO tOO HO i.’O ’.’0 140

I ig. 4. t lk t...ns for the inelastic ^-altering of elect rons unit t.mi.,1 enereies of 124 and 107 MeV front ; ""l»h, .1 level at ;.<» MeV.

HOTONUCLEAR DATA SHEET 240

U.S. OEPARTMENTOF COMMERCE

national, bureauof standards
Tabu I Cross sections for the inelastic scattering from 10*Pb, 3* level at 2.6 MeV

1 2 3 4 5 6

Energy Angie R = A, Cross section (MeV) (degree) MAIN FRMAIN

(cmI/sr)

1 2

124 45 4-34(3)= 7.5% 3.69(29) =3.5(30) 3.47(29) 50 9.03(3)= 6.9% 3.03629) = 2.6(30) 2.80(29) 50 8.10(3)= 4.2% 2.74(29) = 1.7(30) 2.51(29) 60 1.50(2)= 2.3% 1.27(29) = 7.1 (31

)

1.21(29) 60 1.39(2)= 5.3% 1.17(29) =8.4(31) 1.12(29) 70 1.25(2)= 6.8% 3.59(30) = 3. 1 (31

)

3.62(30) 80 108(2)= 2.3% 1 .04(30) =6.0(32) 9.28(31) 80 9.73(3)= 6.0% 8.52(31) =6.4(32) 8.34(31) 85 9.00(3)= 6.1 % 4.13(30 = 3.1(32) 3.77(31) 85 8.35(3)= 9.0% 3 54(30=3.6(32) 3.50(31) 90 1.09(2)= 5.5% 2.20(30 = 1.6(32) 2.11(31) 90 1.05(2)= 10.5% 2.14(30 = 3.0(32) 2.03(31) 90 ' 1.13(2)= 7.6% 2.24(30=2.0(32) 2.19(31)

92.5 1.21(2)= 5.6% 1.67(30 = 1.3(32) 1.59(31) 95 1.78(2)= 4.5% 1.68(30 = 1.1(32) 1.59(31) 100 312(2)= 4.5% 1.53(30 = 1.0(32) 1.44(31) 105 4.58(2)= 3.3% 1.38(31) = 1-0(32) 1.36(31) 110 5.31(2)= 5.6% 1.19(30=9.0(33) 1.21(30

115 4.87(2)= 4.6% 8.86(32) = 5.9(33) 8.94(32) 120 4.80(2)= 5.0% 6.9.6(32) =4.9(33) 6.95(32)

125 4.85(2) ± 3.6% 5.77(32) =4.5(33) 5.24(32) 130 4.20(2)= 4.1 % 3.60(32) = 2.2(33) 3.20(32)

135 3.98(2)= 3.7% 2. 16(32) = 1.5(33) 2.03(32) 140 3.79(2)= 5.2% 1.39(32) = 1.0(33) 123(32)

167 60 I.I5(2)± 6.1 % 1.16(2)= 4.0% 1.52(30) = 7.0(32) 1.53(30) 65 1.12(2)— 8.9% 1.16(2)= 3.7% 5.14(30=4.6(32) 5.47(31) 70 2.45(2)- 8.2°; 2.59(2)= 4.1 % 3.65(31 )_ 1.7(32) 4.06(31) 70 2.53(2) = 8.7°; 2.53(2)= 4.4*; 3.80(30 = l.S<32) 3.96(31) 75 5.47(2)- 3.3% 5.63(2)= 2.8% 3.67(30 = 1.7(32) 3.79(31) 80 6.53(2)- 3.8*. 6.30(2) = 1.9 % 3.24(30 = 1.1(32) 3.11(31) 80 6.49(2) - 3.6°; 6.66(2)= 3.3% 3.20(30 = 1.8(32) 3.04(30

85 5.79(2)- 3.5°; 5.57(2) -= 3.5% 2.05(30 = 1.2(32) 1.95(30

90 4.73(2) r. 4.2% 4.80(2)= 2.6% 1.15(30 = 5.0(33) 1.14(30

95 3.70(2) .. 6.8°., 3.64(2) = 6.0% 4. '3(32) = 2.8(33) 4.94(32)

100 2.60(2) _! 1.5 \ 2.72(2) - 5.2% 1.85(32) -.1.0(33) l.'9(32)

105 2.10(2) 14.0% 2.67(2)= 7.8% 7.53(33) =6.1(34) *•27(33) 110 3.35(2) = 24.0% 3 46(2) 10.0 % 3.63(33) .3.7(34) 3.46031

115 1.01(1) 14.0 % l.l‘»(l) 7.6 % «.4‘H.tt) =5.1(34) N'9(33)

120 1.72(1) 10.0

%

2.011 1) 5.6% •(0(33) 5.2(34) ' 03(33)

1)0 1.50(1) 13.0". I.K.'ll) 11.0“, 4.76(33) 6.5(34) 4.32(33)

1 lie r.ilio R ill t lie areas ( under the el.i'lte and. u.v'.i'tic peak, i' determined t'> ! \ v' s. tVvicnt mcllinds (programs M \IN and 1 KM UN re'i|Vwhwi> ). llic ircl.iNtic vIV'n Uvlu: !

’ 51

•ire determined mill R at. nrduii: in 1 KM UN and mill the cl.n JtC CTVnn whlwtl I’JNC

I'cen measured relative in t [ref. "l). flic er><" 'k\ii»'U' ni column 6 'ii\e Ke.l delei mn•ed u till (he

'.line R 1'iit mill eluslie ern-.s seeCntis which re e.iKulaled w nil a I'IN Jl Jl.lil's v! I X 1 : bulin.i 1 ‘1.

llic mimher' in hruek.is are die p -were i i 10.

J. Friedrich and F. Lenz, Nucl. Fhys. A183 (1972) 523

14

J. Heisenberg, R. Hofstadter, J. S. McCarthy, I. Sick, B. C. Clark,

R. Herman and D. G. Ravenhall, Phys. Rev. Lett. 23 (1969) 1402 241
REF.

J„' Friedrich

Nucl. Phys. A191 . 118 (1972)

EL EM. SYM.

Pb 2C8 82

METHOP

Page 2 of 2.

REF. NO. 72 Fr 5 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

Table 2 Same as table I but for the $~ level at 3.2 MeV

1 2 3 4 5 6

Energy (MeV)Angle

(degree) & * Cross section (cm*/sr) MAIN FRMAIN

a b

124 60 7.8 (4) = 30 % 6-4 (31 )± 1.9(31) 70 1.2 (3) = 30 % 3 6 (3!>±1.I(3I)

80 3.61(3)= 6.5% 3.48(3I)±2.7(32) 80 3.45(3) = 17 % 3.03(31) ±5.3(32)

85 5.S4(3)= 4.3% 2.68(31) ±1.7(32)

85 5.01(3)= 9.5% 2.12(31)±2.2(32) 90 3.66(3)= 4.1 % 1 .82(31 ) ±8.0(33) 90 7.90(3)= 7.8% 1.61 (31) ±1.4(32) 90 7.20(3) = 12 % 143(31 )± 1.8(32) 92.5 1.01(2)= 4.7*; 144(31) ±7.0(33) 95 1.32(2)= 4.4 % 1 -29(3 1) ±6.0(33)

100 1.44(2)= 4.0% 7.30(32)± 3-2(33) 105 1.46(2)= 8.0!i 4.39(32) ±4.0(33)

110 1.10(2) — 10 % 2.48(32) ±2.8(33)

115 1.04(2)= 7.8% 1 .39(32) ±1.7(33)

120 4.83(3) = 18 % 7.0 (33) ±1-3(33)

125 5.1 (3) = 30 % 6.1 (33) ±1.8(33)

130 2.6 (3) — 37 % 2.2 (33) ±8.2(34)

135 4.1 (3) = 29 % 2.2 (33) ±6.5(34)

140 3.3 (3) = 52 % 1.4 (33) ±7.2(34)

167 60 3.83= 0.59(3) 3.75= 0.67(3) 4.51(3)= 8.9% 5.9 1 (3

1

) ±5.3(32)

65 7.3 = 0.9 (3) 6.9 = 1.0 <31 8.'6(3)= 9.5% n HM w N

rn oo 00 70 .1.42= 0.17(2) 1.39= 0.18(2) 1.76(2)= 5.6% 2.48(3!)±1.5(32)

70 1.30= 0.20(2) 1.3 = 0.2 (2) 1.600)= 6.1 % 2.40(3I)± 1.5(32) 75 1.56= 0.16(2) 1.56= 0.16(2) 1.37(2)= 4.5% 1.22(31) ±6.0(33)

80 6.83= 2.4 (3) 7.9 = 1.5 (3) 1.17(2) - 7 6 % 5.58(32) ±4.4(33)

SO 8.9 = 2.3 (3) 9.3 = 1.4 (3) I.I7C) - 8 9 % 5.63(32) ±5.1(33)

85 1.3 = 1.9 (3) 1.82= 1.2 (3) 3.3 <3l=26 % 1 .21 (32) ±3.1(33)

90 0.1 =15.6 (4) 0.5 = 1.0 (3) 2.3 « ') - 25 % 5.4 (33) _± 1.4(33) 95 0.9 =20.6 (4) 0.2 =17.3 (4) • :i?) 2.6 (33) 100 0.9 = 2.6 (3) 0.1 = 2.6 (?) 40 It) 26 % 2.7 (33)±7.l(34)

105 5.2 = 4.2 (3) 2.4 = 4.7 (3) 1 5 >3, |J 4.8 (33) ±5.5(34)

115 2.1 = 1.5 12) 2.3 = 1.5 (2) f'lOl 14 % 3.06(33) ±4.3(34)

120 2.0 = 1.6 (2) 2.4 - 1.6 (2) 6 250) 12 % 2.36(33) ±2.8(34)

130 1.5 - 2.3 (2) 1.9 = 2.5 (2) 4 I O) 28 % ! .20(33) ±3.4(34) The ratio R has been determined twice with MAIN tel i

i-'.ti .unt ditrcrcnl levels in the

a naly' is. The cross sections (column ft) again have been d.tc; - ! w.ih R as given in column 5 and with the elastic cross sections which have been measured rJ.tise to ‘*C.

(over)

form N3S-418

(R CV. 7-1 4-64) USCOMMoQC 26010-P64 PHOTOHUCLEAR DATA SHEET 242

U.S. DEPARTMENTOF commerce

NATIONAL BUREAU OF STANDARDS
Tabu 3 Same as table 2 but for the 5" level at 3.7 MeV

1 2 3 4 5 6

Energy (MeV)Angle

(degree) R 3 Cross section (cmVsr) MAIN

a b

FRMAIN

124 60 5 (4) ±43 % 4.4 (31 ) = 1.9(31) 70 1.1 <3) = 36 % 3.3 (31 )± 1.2(31) 80 2.46(3) = 10 % 2.37(31) = 16(32)

80 2.25(3) ±16 % 1 .97(31 ) ±3.3(32)

83 3.20(3)= 6.9% 1.47(31) = 1.2(32) 83 3-19(3) ±12 % 1-35(31)± 1.7(32) 90 5.13(3)= 5.2% 1.08(31) =6.0(33)

90 4.90(3) ± 7.9% 1.00(31) ±9.0(33) 90 3.20(3) = 28 % 6.34(32) ±1.8(32)

92.3 6.37(3)= 4.3% 9.1 1(32) ±4.2(33)

93 7.66(3)= 5.3% 7.48(32) ±5.6(33)

100 6.96(3)= 9.3% 3.53(32) ±3.4(33)

103 7-14(3)= 7.7% 2.15(32)±1.9(33)

110 6.25(3)= 16 % 1.41 (32) ±2.4(33)

113 5-4 (3) = 17 % 9.8 (33) ±1.7(33)

120 3.0 (3) = 35 % 4.4 (33)±1.5(33)

123 2-7 (3) ±42 % 3.2 (33) ± 1.3(33) 130 1.7 (3)±74 % 1.5 (33)= 1 (33) 133 13 (3)=45 % 1.3 (33) ±6 (34) 140 5.1 (3) =41 % 1 9 (33) =8 (34)

167 60 1.42± 0.52(3) 1.13 ± 1.40(3) 2.38(3)= 9.6% 3-12(3I)±3.l(32)

63 2.64 ± 0.86(3) 1 .86 ± 103(3) 4. 19(3) = 17 % 1.86(31) ±3.2(32)

70 3.21 ± 1.60(3) 134± 3.30(3) 7.60(3) = 14 % 1.07(3

1

) ± 1 .5(32) 70 3.7 ± 1.8 (3) 1.4 ± 4.7 (3) 7.74(3) = 15 % 1.16(31) = 1.7(32) 73 4.2 ± 2.1 (3) 3.8 ± 3.8 (3) 8.56(3) ± 9.9% 5.57(321=5.6(33)

80 2.0 ± 2.4 (3) 0.4 ± 3.0 (3) 4.90(3)= 9.0% 2.34(32) ±2. 1 (33)

• 80 0.3 ± 2.1 (3) 1.0 ± 3.0 (3) 4-50(3) ±25 % 2. 1 6(32) ± 5.4(33) 83 0.2 ± 1.8 (3) 0.3 ± 2.8 (3) 1.7 (3) =46 % 6.4 (33)±19(33)

90 0.6 ±15.0 (4) 0.6 ±23.5 (4) 1.1 (3) ±45 % 2.6 (33) — 1.2(33) 95 0.7 ±21.6 (4) 1.8 ±48.1 (4) < 2(3) < 2.6 (33) 100 0.3 ± 2.7 (3) 0.2 ±63.3 (4) 5.S8(3) = 14 % 4.00(33)±6.0(34)

105 7.6 ± 4.5 (3) 3.7 ±16.7 (3) 1.98(2) = II % 5.5S(33)±6.I(34)

115 3.8 ± 1.6 (2) 3.7 ± 4.7 (2) 6.76(2) = 10 % 3.68(33) = 3.7(34) 120 •» 9 ± 1.8 (2) 3.3 ± 6.3 (2) 940(2) = 12 % 3.55(33) ±4.6(34)

130 2.2 ± 2.4 (2) 1.9 ±10.8 (2) 7.40(2) ±27 % 11 6(33) =6.3(34)

243
REF. EL EM. SYM. A Z .

K. Shoda, M. Sugawara, T. and J. Uegaki

PICNS-72, 321 Sendai

METHOO

Salto, H. Miyase, A. Suzuki, S. Oikawa,

Pb 208 82

REF. NO.

72 Sh 10 hvm

REACTiON RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,P SPC 24- 27 C 24- 27 MAG-D UKN

I A STATES

Pig. 9 Energy distribution of protons from 2oa Pb(e,e'p)

reaction. Top of the right hand side is a difference spectrum. Proton hole states and the core analogue state are indicated by arrows and

a Bi result respectively.

form N3S*418

(REV. 7® 1 4» 64) USCOMMoQC 2601 0-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANOAROS PH0T0NUCLEAR DATA SHEET 244
REF. R. E. Toohey and H. E. Jackson

Phys. Rev. C6, 1440 (1972)

ELEM. SYM. A

Pb 208 82

METHOD REF. NO.72 To 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.N LPT 7-9 C 9 TOF-D DST

(7.4 - 8.4) (8.4)

G-WIDTH. J-PI

TABLE I. »

)

J1T Pb resonance parameters. Underlined resonances are discussed In the text.

Argonne National Laboratory 1 Lawrence Radiation Laboratory b Oak Ridge

National Laboratory

4 r

T* r

r* (keV) R (90*/135*) J

(eV) R (90*/135*) J* (eV) J (eV>

996 1.55*0.29 1 5.8 951 1.34*0.36 1 3.5 945 2.04*0.52 1 2.9 907 125*020 1 6.5 946 1.38*0.12 1 10.1 1.46*0.20 1* 6.8 737 0.99*0.12 1 3.5 699 1.17*0.12 1 4.4 651 1.11*0.08 1 11.8 1.37 *0.20 1* 5.5 2* 12

613 1.23*0.08 1 19.7 1.81*0.25 1* 12.8 1 12

602 1.25*0.09 1 8.0 1 8.5 551 0.80*0.08 3.3 538 0.99*0.07 1 12.4 0.94*0.13 1‘. 1* 12 1 11.1 491 1.01*0.16 1 2.0 484 0.86*0.15 1.6 1 8.5 457 1.02*0.16 1 2.2 445 0.68*0.13 2*.l* 1.5 422 d ES

334 0.60* 0.17 2*,1* 0.7 1 22

315 0.94*0.07 1 10.2 1.13*0.16 1* 6.7 1 8.5 297 0.90*0.25 0.9 1 0.7 254 1.00*0.07 I" 16.4 1.00 1" 152) 28.3 181 1.67*0.16 1* 9.9 1.45*0.20 1* 11.0 13.6

* Present work. c Reference 5.

b Reference 1.

d Decay to first excited state of J,7 Pb.

C. D. Bowman, R.J. Baglan, B.L. Berman & T.W. Phillip*,

Phys. Rev. Letters 25, 18, 1302 (1970).

B.J. Allen and R. L. Macklin, Phys. Rev. Letters 25, 1675

(1971); in Proceedings of the Third Neutron Cross-Section

and Technology Conference, Knoxville, Term. Match 1970

(University of Tennessee, Knoxville, 1911), p.764.

(over

)

FORM N3S-418

(R EV. 7-1 4-64) use OMM. O C 26010.P64 PHOTONUCLEAR DATA SHEET 245

U.S. OEPARTMENTOF commerce

NATIONAL BUREAU OF STANOAROS
FIG. 1. Threshold photoneutron spectrum measured at 90 and 135V The neutron yield from the J*Pb(y0 *) reaction

is plotted as a function of the neutron time of flight, and the peaks are labeled with the neutron energy £, In keV.

246
REF. Y. Torizuka, Y. Kbjlma, T. Salto, K. Itoh, A. Nakada,

S. Mltsunobu, M. Nagao, K. Hosoyama, S. Fukuda

PICNS-72, p. 171 Sendai

EL CM. SYM.

Fb 208 82

METHOD REF. NO. 72 To 6 hvm

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,E/ SPC 0- 26 D 183 MAG-D 35

However, It should be noticed that this resonance has a fine

h » u '# » ° Ex (MeV)

Fig. 2. The spectra of 209 Pb at 183 MeV and 35°. The El giant resonance Is indicated at 13.5 MeV.

!

t 0

,31

o

Fig. 3. The same spectrum as for Fig. 2. The structure Is seen at 8.9, 10.1, 10.6, and 11.2 MeV. A broad bumps

around 23 MeV indicates another resonance.

' FORM N 3S-418 (R(V. 7-1 4- 64 ) use OMM-N 83-0 C PHOTONUCLEAR DATA SHEET 247

U.S. DEPARTMENT OF COMMERCE

NATION*!. BUREAU OF STANOAROS
ref. F.R. Buskirk, H. D. Graf, R. Pitthan, fL Theissen,

and Th. Walcher

PIGNS-73, Vol.I, p.703 Asilomar

method

0. Titze, EL EM. SYM. A

Pb

REF. HO. 73 Bu 14 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E.E/ SPG 2- 20 C 50. 65 MAG-D DST

Fig. 2

The E2 resonance which is

clearly visible at lo.8±o.2 MeV

exhausts more than 5o % of the sum

rule. Fig. 2 shows the excitation

energy of this resonance as a function of for the nuclei

measured at Darmstadt and the Sendai result for 9°Zr .r 5?. Bohr and

Mottelson predicted a collective E2 resonance whose isoscalar

_ part should depend on A through Ex

=58 A

" / -'MeV. The data of Fig. 2 are consistent with E

x=65 A

-1//^MeV suggesting to identify the observed reso- nances with this type of E2 excitation.

'Okm N3S-41S

IRCV. 7-I4.S4) USCOMM-NB9-OC PHOTONUCLEAR DATA SHEET 248

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Lawrence Fagg

PICNS-73, Vol.I, p.663 Asilomar

EL EM. SVM. A

I z

Pb 208 82

method REF. NO.

73 Fa 5 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E.E/ ABX 0- 15 D 50 MAG-D 180

(50.4)

PEAKS 7. 3. 7.9, 9. 3

Fig. 16. Preliminary l80°

tering spectrum

electron scat- from 208Pb

^obm N3S-418

<R CV. 7.1 4-641 USCOMM-NSS-OC PHOTONUCLEAR DATA SHEET 249

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
ref. B. S. Xshkhanov and V.G. Shevchenko

PICNS-73, Vol.I, p. 511 Asilomar

EL EM. SYM.

Fb

A

208

Z

82

METHOD REF. NO. 73 Is 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,N RLX 7- 14 C 7- 14 BP3-I ii.PT

?ig»5« Comparison of our cross sec- tion of reaction 203Pb ( ^ f n) jjupper figure) with, the phctoneutron

cross section given in paper

(lower figure).

FO*m NSS»418 ~

<R EV. 7*1 4-64) USCOMM-NB5-OC PHOTONUCLEAR DATA SHEET 250

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Rer. M. Nagao and 7. Torizuka

Phys. Rev. Letters 30, 1068 (1973)

EL EM. SYM.

Pb 208 82

methoo REF. NO. 73 Na 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

R.H/ FMF 6- 30 D 124-250 MAG-D dst

8 RESONANCES DETECTED

2

E , ( MtV ) FIG. 1. Inelastic electron scattering spectra in

20a Pb at various momentum transfers. Arrows indi- cate positions of peaks at excitation energies 9.9, 9.4.

10.0, 10.S, 11.2, 13.4, 19, and 22 MeV.

FIG. 3. Form factors integrated over the range of energies indicated in the upper corner. The form factor in the range 1(5— 27 MeV was decomposed to the El

and £3 components.

(over)

form N3S-41S

(RSV. 7.1 4. 641 use OMM-N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 251
TIG. 2. Form factors lor peaks at 8.9, 9.4, 10.0, 10.8, and 11.2 MeV integrated in the range of excitation energies Indicated in the upper corner of each graph.

Open circles, form factors extracted only from the peak parts which are seen manifestly, (a)—(e) Form

factors plotted against fe f f • Th® B(EL

)

values shown

in the lower corner were obtained by comparing these form factors with the theoretical curves of L = 1 and 2.

(f) Sam of the form factors compared with the mouopole

form factor described in the text.

TABLE I. Values of B(EL) and |Af(o)l J

, and the percentage cf the energy-weighted sum rule.

£r L

BIEL)*

(fmJi

) Type of EWSR

Percentage

of sum rule

3.6-11.6 2 (3.8±0.4)xl03 T = 0 47

0 ~ 8xl0lb r = o 100

=<19e

3 (1.3t?:i)xi05 T = 0 44

=« 22c 2 (3.4t|)xl0» r«i 60

C ~ 7.2 x lO3 b r = i 126

3 Errors from the model dependence of analysis are

not included.

b lM(0)! l(2Di i(l -*'T

3 )ri 2> 1 2 in fm1

. 'Derived irom a broad bump at 16—27 MeV [see Fig. 3(c)].

252
REF. Yu. I. Sorokin, V.A. Khrushchev, and B.A. Yur ev

Izv. Akad. Nauk SSSR. Ser. Fiz. 37_, 156 (1973)

Bull. Acad. Sci. USSR, Phys. Ser. 37, 137 (1973)

EL EM. SYM.

Pb 208 82

METHOD REF. NO. 73 So 21 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

G,XN ABX 7- 27 C 7- 27 BF3-I 4PI

- SEE ALSO 75S012

208 Fig. %. Cross sections for Pb: the ( ,Tn) cross section a (yn) + 2a(y,2n) + + c(y,np) + ... obtained with a processing step of 1 MeV (points), and the photo—

absorption cross section ** a(yn) + a(Y,2n) + a(y,np) + ..., obtained with alallowance for multiplicity according to the statistical theory (dashed curve)

.

Integral Cross Sections, MeV*b

Reaction and £7 rang* »ri» "•1*1*

10 20 MeV J,|0 3.:t8 Jr to 20 MeV 2.8u 2 , Si

;(T.7’ii) to 27 MeV 3.o:t 4.32

Sr to 27 MeV 3.21 3.28

;(T,Tn) 20—27 MeV 0.33 0,'J'i 5T 20—27 MeV 0.41 0,47 NZ

S(£l)-0.06 -j- 2.9S 2,98

«<£2) 0,3 0,5 =<?>) ll«! U.OI3 0.013

FORM N3S-418

IR EV. 7-1 4-841 use omm-n as-oc

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 253
REF.

METHOD

C. Pc Swann EL EM. SYM. A z Nucl. Phys. A201. 534 (1973)

Pb 2G8 82

REF. NO. 73 Sw 4 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G LPT 31 D 7 SGD-D UKN

7 = 7.07. 7.09

Table 1 Summary of observed levels in 20,Pb, 207Pb and 209Bi and some of their propertiaa

Nucleus Er (keV) Spin rjr gr0vr

(eV)

present A (eV)ref. 3

) ref. 2)

s.p. estimate (W.u.) El Ml ««Pb 7071 ±2 1 i 31 ±3 15 0.036 4.4 7091 ±2 1 i 17J-2 15 30 = 13 0.019 2.3 2°7pb 7186±5 i.i 15±4

7206 ±5 25 ±5 20, Bi 7179=5 f.l, ¥ 24±5

7202 =5 }. I. 30±5

Weisskopf units given are based on our date.

form N3S-418

(REV. 7.14-64I U5COMM-N0S-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 254
ref. PICNS-73, Vol. I, p. 317 Asilomar EL EM. SYM.

Pb

A

208

| z

82

METHOO REF. NO. 73 Sw 13 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE o UJ 1- W CTOR TYPE RANGE TVPC range

ANGL E

G-G LIT 4- 5 C 5 SGD-D DST

Table: Propert ies of States Observe^i in 20S,207,203 pb and 209

Bi

J-PI. 2 LEVELS

Nuclei E y

r o /r 3 r o /r r

‘ 0 G(EL) G (Ml }

( ke V

)

(eV) (eV)

- 3742 1 1 0.13(2) 0.001 0.12

? 06 Pb 4114 2 +

1 0.30(6) 5 4326 1 1 0.90(9) 0.004 0.56

4602 1 1 0.23(3) 0.001 0.12

3300

4-

CM

r— 0.039(6)

3928 ' 0/2') 1 0.68(7)

4104 3/2' 1 0.55(6) 8 207 Pb 4140 5/2' 1 0.46(5) 6 4627 l/ 2 + b)

1 0.64(7) 0.003

4872 1/2, 3/2 1 3.6(5) c> O O <l1 .2

4982 1/2, 3/2 1 4.0(5) o o M .2

208 Pb 4087 2 +1 0.49(5) 7 4843 1 1 5.1(5) 0.02 2.3

2826 5/2' ( •63) c) 0.09(1 ) 3977 5/2 —13/2 0.82(8)

4085 5/2' — 1 3/2' 0.28(3) n-5 4144 II 0.07(2) 'Ll 209

Bi

4156 II 0.21(4) n.3 4176 II 0.21 (4) *3

4206 II 0.25(3) M

4747 7/2--11/2 2.9(5) -v.0.013 'Ll .4 4784 II 2.7(5) n.0.012 'Ll .3

4822 II 1 .4(3) ".0.005 lO . 7

a ) see ref . 3 b) see re f

.

4 c) see ref . 5

3) S.M. Smith, P.G. Roos , C. Hoazed and A.M. Bernstsin, Nucl . Rhys.

A 1 7 3 , 32 (

1 9 7 1 ).

4) R.A. Mayer, B.L. Cohen and R.C. Diehl, Phys. Rev. C_2_, 1833 (1 3 70 ).

5) R.A., 3rcglia, J.S. Lilley, R. Perazzo and U.R. Phillips, Phys. Rev.

CJ_, 1 5 C’3 (

1 970). 255

ro«M MSS-418

IRCV. 7-1 4-«4i USC OMM-N 85-0 C
REF. Y„ Torizuka, Y. Kbjima, T. Salto, K» Itoh, A. Nakada,

S. Mitsunobu, M. Nagao, K„ Hosoyama, S. Fukuda, H. Mlura

PICNS-73, Vol.I, p.675 Aallomar

EL EM. SYM.

Pb 208 82

METHOD REF. NO. 73 To 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

E.E/ FMF 6- 32 D 124-250 MAG-D dst

Fig. 10. The form factors for the peaks

at 8.9, 9.4, 10.0, 10.6, and

11.2 MeV integrated over the

range of energies indicated in

the upper corner of each graph.

The open circles are the form

factors extracted only from the

sharp peak parts. The B(EL)

values shown in the lower cor- ner were obtained by comparing

these form factors with the

theoretical curves of L=*l and 2.

LEVELS 8. 9-14.

1

Fig. 9. Inelastic electron scattering

spectra in the giant resonance region of 208Pb. The arrows in- dicate peaks at 8.9, 9.4, 10.0,

10.6, 11.2, 13.4, ^19, and ^22

MeV.

(over)

rorm NSS-418

(REV. 7.14. 641 USCOMM-NtHC PHOTONUCLEAR DATA SHEET 256

U.S. DEPARTMENT OF COMMERCE national bureau of stanoaros
Table IV. The B(£L) or jM(O)

|

2 values and the occupation rates to the energy weighted sum rule (EWSR)

.

Ex L B(EL) in fm2L

x Type of EWSR Occupation

- rate in 7.

8.9 2 670±70 T-0 7.8

9.4 2 550±90 T=0 6.3

10.0 2 1030-80° T=0 13

10.6 2 T-0 8.4

11.2 2 830±130 T-0 11

8.6^11.6 2 (3.8±0.4)xl0 3 T-0 47

0 -U8X10 3 ** T-0 100

3 <1.8*JJ)xl0

5 T-0 44

„22*** 2 (3.4^)xio 3 T-l 60

0 7. 2x10 3 ** T-l 126

* Errors

** |M(0)|

from

2 »|<Z

i

the model dependence: of

1+T3

t- 2 >I 2 analysis are not included.

- r . ^ m rrn 2 i

' *** Derived from a broad bump of l&'Ol MeV.

Fig. 11. The form factors integrated

over the range of energies indicated in the upper comer of

each graph. The form factor

in the range 16-27 MeV was decomposed to the E2 and E3 com- ponents .

257
REF. H. E. Jackson

Phys. Rev. C£, llU8 ( 197U)

C._ SM. O r *1.

Fb 208 82

METHOD REF. NO.

7U Ja 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N ABX 7- 9 C 7-9 T0F-D DST

A series of experimental estimates of the nonresonant radiative leutron reaction cross

been inconsistent with measurements of neutron-induced reactions. In an effort to resolre

thi3 discrepancy, the shape of the 41-keV resonance in the reaction 2 ®Pb(y,i»)24r Pb has been

studied in detail by simultaneous measurements of the photoneutron spectra at 90 and 135*. A small asymmetry in the resonance shape implies the presence of a background cross section of 1-3 23.; This value can be explained in terms of contributions from neighboring resonances plus a small direct-reaction component; there is no evidence for anomalous processes. The result is consistent with the most recent data from study of the reaction 2m Pb-

(»,Vo)- -

NUCLEAR REACTIONS 2®R3ty,a), bremsstrahlung end points 7.9, 8.4, and 9.0 MeV; studied shape 41-keV resonance, deduced background ofy.n) = 1 . 3211? ]

TABLE XI. Comparison of calculated and observed

background cross sections for 2MPb(y,n)2a7 Pb. The

values corresponding to a fE„ extrapolation of the ther- mal (y,n) cross section are given in die fourth column. The results of a calculation discussed in Sec. IV are

given in the last column

Experimental o„. Calculated 0 ^

(».Y

)' (V.n) Extrap. * (y.»)

(keV) (mb) (mb) (mb) (mb)

0.025‘x 10*3 709 ±10 b 0.0012 0.0012 0.0012

1.95 3.2 ± 1.2 c 0.45*0.16 0.34 0.41 25 0.5 d 0.9 ±0.2 1.2 1.01 41 • • • 1 *>+2*T € 1.5 1.15

* Cross sections extrapolated from the thermal capture cross section ^(y.n) by use of the relation

ff(y.«) =<7lh (y,n)[£n /(0.025x 10"3

)J l/I

. where E„ and die thermal energy are In keV.

b Reference 3.

6 R. C. Greenwood and C. W. Reich, Phys. Rev. C 4, 2249 (1971).

d Reference 7.

e This work. FIG. 1. Photoneutron time-of-flight spectra for 2 ®Fb

3 E.T. Jumey and H.T.

Laboratory Report No.

^unpublished) p.236.

Motz, Argonne National

ANL-6797, 1963

O.A. Wasson and R.E. Chrien, in Proceedings

of the International Conference on Photonuclear Reactions and Applications, Asilomar

1973 » edited by B.L. Berman (Lawrence

Livermore Laboratory, Livermore, California,

1973), Vol.l, p.311.

in the region of the 40.5-keV resonance. The data were

accumulated simultaneously on flight paths at 90 and 135’

to the photon beam. The solid curve (the result of a

least-squares fit) corresponds to an isotropic nonresonant cross section of 1.3 mb and a total resonance width

of 1400 mb. The dotted curve is the shape expected for a vanishing nonresonant cross section. Both curves in- clude the effects of resolution broadening. The region near the narrow resonance at 37 keV (at channel numbers

6300 and 2190 in the 135 and 90* data, respectively) was

excluded from the analysis. The inset shows an enlarged view of the low-energy wing of the resonance as observed

at 135’, and contains data obtained by averaging adjacent channels of the time-of-flight spectrum.

AR DATA SHEET 258

NATIONAL BUREAU OF STANOAROS
R. Moreh, 0. Shahal, and I. Jacob

* eF- Nucl. Phy's. A228, 77 (1974)

EL EM. SVM.

Pb 208 82

METHOO REF. NO.

74 Mo 7 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE MANGE TYPE RANGE

G, G NOX 7 D 7 NAI-D 135

7-7.279 FUNC TEMP

Fig. 5. Relative scattering yield from a Pb scatterer as a function of temperature. The scatterer thickness is 0.88 cm and the geometry is indicated in the figure. The scattering yield is normalised to T = 300J K. The solid line is the theoretical curve obtained using eq. (I) with = 104°K, 6 *• 7.3 eV, r = 0.78 eV, r0lT = 1, and corrected to account for the effect of the edges of the target.

= N3S*418

- 6 / '. 14. 941 ,’.C>M.oc 29 0! 0.09 4

u.s. department - national -scpea^tt s. ...- PHOTONUCLEAR DATA SHEET 259
R. Pitthan, F.R.

BeF X.K. Maruyama

Phys. Rev. Lett.

method

Buaklrk, B.B. Dally, J.N. Dyer, and

33, 849 (1974)

EL EM. SYM. A

(See Erratum: Phys. Rev. Lett. 34

848 (1975)

Pb

REE. NO.

Z

208 82

74 PI 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TV PC RANGE

E,E/ FMF 3“ 40 D 90 MAG-D DST

- B(EL)

Inelastic electron scattering with 90-MeV electrons shows previously observed giant resonances at excitation energies of 6aA- ,/,:i (£2), 81A* 1/3 (£1), 105A‘ 1/3 (£3>, and 130A* 1/3 MeV (£2). Distorted-wave- Born-approximation analysis of additional structure

at 53A' ,/3 and 195A* 1 / 3 MeV suggests a monopole assignment. Transverse contributions

to the £1 matrix element are compatible with an electric spin-flip. Differing widths of the respective resonances in the two nuclei are explained through dynamic deformation

of Au. The reduced electric transition strengths B(EL) are given.

FIG. 2. Same as Fig. 1, after subtraction of the fit- ted background.

FIG. 1. Spectrum of 90-MeV electrons, scatt-.rcd inelastically from Pb and Au. The fitted background

which consists of the radiation tail and the machine

background is shown. The counting rate is corrected

for the constant momentum dispersion of the spectrom-

. eter. Thus the error increases with the oeit. * i >

- -

ergy.

s:4‘*£ r' '.3 ANGLt ! DEGREES > FIG. 3.' Ratio of the inelastic cross section of the resonance at 9.2 MeV to the Mott cross section as a

function of scattering angle. The curves show the results of D\VBA calculations assuming an £2 or an £0

assignment. At 105° we did not see a resonance. The

open circle corresponds to a resonance with a height

of 1 standard deviation in the count rate and is, therefore, regarded -3 an upper limit. The error at 105° represents 1 additional standard deviation.

(over)

FORM N3S>4IS

IBEV. 7-I4.A4I USCOWM.OC 2A0I0-PA4 PHOTONUCLEAR DATA SHEET 260

U.S. OEPARTMCNTOf COMM tPC: national BUREAU O “ ST AMOA.OS
TABLE I. Comparison of results for Au and Pb as extracted from the 75’ measurements. Columns 2 and 3 show

multipolarity and isospin assignments assumed.

197Au 203

Ab

E.

[A' ,/3 Me;]

EL CT

[Mev]

SUL)

2, *) [fm j

^nat Cw/] e«a

s!

C ] S»lf ! Others SUL) [ M*v]

b;ed

[ftiZL

] 11 *nat [Mev]

EWSR

6

1

m

SP-J c) Others

8(EL)

53 EO 0 9.2 (3.6-1 S) 10

3 ’.2*0.5 35 " " 3.3 :9*3!10 3

3 .8*0.5 50 - -

63 52 C 13.3 (5.2*1 .2! 13

3 :.9-o.: 77 '5.3 ;3.;-i .sin 3

" 1 10.5 (5. 7-2.511G 3 2.Sy0.3 95 21.5

3

r K' (2.5*3.9)10 J

i S-s

(2.6 10.3)1'J

J

at t 1 5 14.0 100MJ

50*10 c) i.b-p.2

15.0

7.5 ::-5 ’> 13.6

1 3 3-20

53*10

3.9*0.

3

235

105

is

3

64-3 A/f)

7^5 ()

105 £3

0

1 12.0 (1 . 7-.3)105 5.2*3.

7

45

3"’ 17.5 C 3,C-T -5) 10

S 4.2*0.

7

90

60

(i.’.

i;

s

5 ;io

5

133 E2 1 23.3 (4.9*1 .51I0

3 ;m 13.3 .4;!3

3

" 22.5 (4.2M.4110 3 5*1 35 U (3.4;|;io3

195 £0 1 33.5 (lOj)IO 1 J 5*2 250 -- 33.0 CM 153 — —

*For the monopole I M if i : (fm; ). h Energy-weighted sum rule Ref. 19. 'Single particle units Ref. 20.

J Surface oscillation p:r ( r) ~ dp,

' Volume oscillation p, r ir* — p (>•).

! Itef. 9.

c Ref. 5.

h Ref. 15.

'Ref. 1-1.

:i Extract. :! from a 2-MeV- v.-itl-j range only.

8

M. Nagao and Y. Torizuka, Phys. Rev.

Lett. 30, 1068 (1973) . 9 F.R. buskirk, H.D. Graf, R. Pitthan,

H. Theissen, 0. Titze, and Th. Walcher,

Phys. Lett. 42B, 194 (1972).

14

M. Danos and W. Greiner, Phys. Rev. 134 , B284 (1964).

15

A. Veyssiere, H. Beil, R. Bergere,

P. Carlos, and A. Lepretre, Nucl. Phys.

A159 , 561 (1970).

19

N. I. Kassis, Technical Report, Institut

fur Kernphvsik der Universitat Mainz,

1969, unpublished.

20

R. A. Ferrell, Phys. Rev. 107, 1631 (1957);

J. Weneser and E.K. Warburton, in The Role

of Isospin in Electromagnetic Transitions,

ed. D.H. Wilkinson (North-Holland

,

Amsterdam, 1969).

261
REF.

W. Scholz, H. Bakhrti , R. Colle, and Angela Li-Scholz

Phys. Rev. C£, 1568 (197*0

. . j f (VI. «

Pb 208 82

METHOD REF. NO.

lb Sc 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

G,G LFT T D I SCD-D DST

(7.08U) (7.084)

LEVEL 7.08U MEV

The Doppler-broadened 7.12-MeV transition from the 19F(p , <ry) l40 reaction has been used to fluoresce resonantly a level at 7.084 ± 0.002 MeV in J0*Pb. A spin value of J = 1 has been assigned by measuring the intensity of the scattered radiation at average scattering angles of 90 and 130*. From

a study of the intensity growth of the scattered radiation with increasing scatterer thickness (production

experiment), the following level parameters were extracted: integrated scattering cross section /<r,d£ = 2.07 ±0.18 MeV mb. maximum absorption cross section <r;J“* = 85^“ b, total level width T =» 26*ff eV, and partial width for the ground-state transition r0 = 16*? eV.

NUCLEAR REACTIONS 2MPb(y, y'), £ = 7 MeV; measured cr< Ey-,9). J0*Pb de- duced level T, r0

, <xTM“, J. Natural Pb targets, resonance-fluorescence production experiment.

FIC. 3. Maximum absorption cross section vs Vt = 6/T. The shaded region contains the values of ojj1 " and

v(t that are compatible with the results of the production

experiment. For details see text.

form N3S-418

(R EV. 7-1 4-6*1 USCOMM-OC 2S010-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 252
REF.

C. F. Swann

Hiys. Rav. Lett. ^2, 1449 (1974) EL EM. SYM.

Pb 208 82

METHOO REF. NO.

74 Sw 7 hmg

EXCITATION SOURCE OETECTOR

REACTION RESULT ENERGY type rangeANGLE

$ G,G LFT 5 c 5 SCD-D DST

(4. 843) (4.95)

4843 KEV t P0L .PHOTON

From measurements of resonance-fluorescence cross section, angular distribution, and polarization, the 4843-keV level of 208Pb has been shown to have a 1* character and

a width of 5.1 ±0.8 eV with all of the decays to the ground state. As the probable lower

member of the giant Ml excitation, this state is at a. significantly lower energy and has

a decay strength which is an order of magnitude larger than the predictions of simple

shell-model calculations.

TABLE I. Comparison of the experimental and theoretical results for

the “giant” A/1 excitation in - u:: Pb.

E y (MoV)

Experimental

B(M 1,1* — 0*1

|(rA'.’2A/c)'i

1 £ y i.MeV)

Theoretical 3 SLl/1,

1

+ — 0*)

[U’/i/2A/e)'l

7.41 to 3.24 b (11.6) 7.52 16.0

(7 levels) 7.2SC 0.2 ... 4.84 d 3.9 5.45 0.4

a See Ref. 9. b See Ref. 7. c See Ref. 3. d Present study.

7)C.V. Bowman, R.J. Bagtan, B.L. Beaman, and

T.W. PkWLLpb, Pkyt>. Rev. Lett. 25, 7 302 (7 970).

S)A. {ilolfi, R. Mo*e#i, A. No ft, 0. SfiakaJL, and

J. Tenenbawn, Phy-6. Rev. C6, 2276 (7972).

9JJ.V. Vengado*, Pky*. Lott. 368, 72 (7977).

FOAM N3S-41S

IP EV. »-! 4-««> USCOMM.OC 2S0I0- P«4

U.S. DEPARTMENT OF CC'.-.iM FT NATIONAL BUREAUS- ST. PHOTONUCLEAR DATA SHEET 263
Ref. C . P . Swann

J. Franklin Institute 298, 321 (1974)

EL EM. SYM.

Pb

A

208

z

82

METHOD REF. NO.

74 Sw 11 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

Gf G LFT 3- 5 C 4-5 SCD-D DST

2 LEVELS 4087,4843 KEV

Tabu: II Properties of states observed in so•>io7.*o«pj) and iotB

i

; G{EL) and G(Jdl) are the reduced

transition probabilities in Weisskopf units

Nuclei Ey (keV) Jw r,/r

?r*/r

(eV) r.

(eV) G(EL) G(Ml)

20.Pb 3744 1- i 0-13 (2) 0 001 4114 2+ i 0-30 (6) 5 4330 IT i 0-90 (9) 0-56 4606 1 i 0-23 (3) . 0 001 0-12 4974 1 i 0-8 (2) 0 003 0-32 5033 1 i 2-3 (5) 0-007 0-90

torpb 3300 1/2+* 0 039 (6) 3928 3/2- i 0-34 (4) 4104 3/2- i 0-55 (6) 8 4140 5/2- i 0-46 (5) 6 4627 1/2+f i 0-64 (7) 0 003 4872 1/2- 3/2" i 3-6 (5)

e ~ 1-2 4982 1/2- 3/2- i 4-0 (5) ~ 1-2

"•Pb 4087 2+ i 0-49 (5) 7 4843 1+ i 51 (8) 2-3

"»Bi 2826 5/2- (0-63)t 0 09 (1) 3977 5 2-13 2 0-82 (8) 4085 5/2--io,2- 0-28 (3) ~ 5 4144 5/2--13/2- 0-07 (2) ~ 1 4156 5/2--13/2- 0-21 (4) ~3

4176 5/2--13/2- 0-21 (4) ~ 3 4206 5/2--13/2- 0-25 (3) ~4

4747 7/2--11/2- 2-9 (5) ~i-4

4785 7/2--11/2- 2-7 (5) ~ 1-3 4822 7/2--11/2- 14(3) ~0-7

* See Ref. (II). f See Ref. (12). * See Ref. (7).

7 C.P. Swann, Phys. Rev. Letts.

32_, 1449 (1974) . L1 S.M. Smith et al., Nucl. Phys.

A173 , 32 (1971) . i2 R.A. Mayer et al., Phys. Rev.

C2, 1898 (1970).

POSM N3S-418

'REV. 7- 1 4»64> USC O MM-N B S»0 C PHOTOHUCLEAR DATA SHEET 264

U-S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
R.R. Whitney, I. Sick, J.R. Ficenec, R. D. Kephart, and

RCF W. P. Trover

Phya. Rev. C9, 2230 (1974)

elem. svm.

Pb 208 82

METHQO RCF. NO.

74 3 hmg

"(ACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

E.E/ ABX 0-300 D 500 MAG-D 60

See further analysis of this data in reference 79Zil

QUASIELASTIC SCAT

r

FIG. 1. The measured quasielasttc ;>o:iks. the errors on the data points do not include an over-all 3% normalization

uncertainty. The solid curve is a fit by the i ermi-gas model which yielded kr (in MeV/c) and e (in MeV) as follows:

(a) ‘U (169, 17); (b)

1J C (221. 2.',); ;V>

: M- M35. 32); (d)45Ca (249, 33); (e)s, - 7 Ni (2G0, 36); (f) 89Y (254, 39); (g) (260, 42); (h) ts, Ta 1265. t'M: • '

3 Pb (265, 44). The fitting uncertainty in kF

is ±5 MeV/c and in e it is ±3

MeV. The small -amplitude da- • • • v.-avo •t-i.rrduction ensa vitiation. the dot -dashed curve is the isobar

excitation, and the large-ampiitui:>. . .-urve is the total result.

foam N3V4U

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(OVER)

U.S. DEPARTMENT QC - N A T » On AC BUREAU OP STA',.;i •:« PHOTONUCLEAR DATA SHEET 265
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roti>n-noriYuilized

and

riidlalive-correcled

cross

sections

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for E

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266

207.0

l.Gfi

0.10

0

2.91

0.21

G

0.09

0.52

G

1.02

O.OG

G

1.43

0.11

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6.11

0.40
«gf. i.. c. Haacke and K. G. McNeill

Cam. J. Phys. 53/ 1422 (1975)

EU EM. SYM.

Pb 208 82

METHOD REF. NO. 75 Ha 4 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,N LFT 7- 9 C 10 TOF-D DST

Threshold photoneutron time-of-flight spectra from the 20 *Pb<Y.n)20TPb reaction have been measured at five angles to the incident photons. Angular distributions obtained for 14 reso- nances within 850 keV of the 2C*Pb(y,n) threshold have led to assignments of A/1 strength

totalling 67.5 ± 12 eV. The total Afl strength available from spin-flip transitions from the

<i 3,2 neutron shell and the hltl2 proton shell has been calculated to be 100 eV (Weiss). Thus,

the data confirm the existence of an A/1 giant resonance just above threshold in 20*Pb.

Table 2. TVo values for 20 'Pb resonances

Neutron energy

(keV)

Excitation energy (MeV) rr0 (eV)

30.2 7.41 0.40 + 0.15

37.7 7.41 1.01 ± 0.27 41.0 7.42 4.20 ± 0.72

90.0 7.47 0.9 ± 0.4

I15-.0 7.49 0.9 ± 0.3

128.0 7.50 1 .50 ± 0.33

181.0

' 7.56 11.8 ± 1.5 256.0 7.63 17.7 ± 1.9 296.0 - 7.67 1 .03 ± 0.25

316.0 7.69 7.03 ±1.1

540.0 7.92 9.2 ± 2.0 610.0 7.99 21.2 ± 3.5 649.0 8.03 6.7 ± 1.3 844.0 8.22 7.3 ± 1.7

Fig. 7. aj/a0 ratios obtained from 3 parameter fit to data from 20*Pb resonances.

Fig. 8. a*/a0 ratios obtained from 3 parameter fit to data from 20, Pb resonances.

. Fra. 6. Experimental «i/a0 ratios for 20, Pb resonances. Overall theoretically possible ranges of a2 la0 values for El, Afl, and £2 excitations are shown at the left of the figure. The rectangles shown with the individual data points

indicate restricted ranges of possible ax la0 values for El transitions, based on optical model calculations of d to s wave

neutron decay ratios. USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 267

u.s. department of commerce

NATIONAL BUREAU OF STANOARDS
REF R. G. Johnson, J*. D. Irish, and K. G. McNeill

Can. J. Phys. 53, 1434 (1975)

EL EM. SYM.

Pb 208 82

method REF. NO. 75 Jo 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

G,N ABX 3- 13 11- 16 TOF-D 98

Fig. 2. Neutron energy spectra for the 10*Pb(Y,n)J07 Pb reaction at bremsstrahlung endpoint energies of (a) 11.0. (b) 1 1.5, (c) 13.0, (d) 13.5, (e) 14.0, (/) 14.5, (g) 15.0, and (A) 15.5 MeV. The spectra are plotted as a function of center of mass neutron energies and have been corrected for the neutron efficiency and the bremsstrahlung shapes (assuming

all transitions are to the ground state of 107 Pb). (over)

form N3S-418

<R ev. 7® 1 4® 64) use OMM-N as-oc PHOTONUCLEAR DATA SHEET 268

u.s. DEP ARTMENT OF COMMERCE NATIONAL BUREAU OF STANOAROS
01

(A

I/I obeu2

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. o - o — 2-- 269

I
PeF- R. A. Lindgren, W. L. Bendel, L. W. Fagg, and E. C. Jones, Jr.

Phys. Rev. Lett. 35, 1423 (1975)

(See Erratum Phys. Rev. Lett. 36, 116 (1976)

EL EM. SYM.

Pb

A

208

z

82

METHOD REF. NO. 75 Li 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ ABX 2- 9 D 37- 61 MAG-D 180

Transitions to states in 20*Pb at 7.40 and 7.91 MeV excitatiian are suggested to be components of a giant magnetic quadrupole resonance in 208Pb. LEVELS AT 7.91, 6.93

Ex(Mev)

FIG. 1. Spectra of electrons scattered at 180“ by 20, Pb at 60.3- and 40.5- MeV incident electron energy. The 7.91- MeV state is so weak at 60.3 MeV that peaks at 8.04 and 8.31 MeV together with the 7.91-MeV peak must be fit In order to reproduce the spectrum In that region, it is assumed that the individual peaks have the same width as the

elastic peak. — —

«-!80“

8- - 6.

£2

i

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blc: 2^

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30 40 30 60 70 30 40 50 60 70 Eo(M«V)

form N3S-418

(RGV. 7-1 4-841 USCOMM-NBS-OC

FIG. 2. A comparison of measured cross sections, as functions of E9, with DWBA predictions based on

transition densities calculated with one-particle, onehole wave functions in an oscillator basis. The oscilla- tor constant is 2.33 fm. 270

(over)

U.S. DEPARTMENT OF COMMERCE

A T 1 0N A L BUREAU OF STANOAROS
ERRATUM

EVIDENCE FOR GIANT A/2 STATES IN 208Pb.

R. A. Lindgren, W. L. Bendel, L. W. Fagg, and

E. C. Jones, Jr. [Phys. Rev. Lett. 35, 1423

(1979)).

Id F*. 1 the units of cPa/dQdE should be /ib/sr

MeV (aot ab/sr MeV) on both vertical scales.

271
A. Schwierczinski, R. Frey, A. Richter, E. Spamer, H.

O. Titze, Th. Walcher, S. Krewald, R. Rosenfelder

Phys. Rev. Lett. 35 , 1244 (1975)

METHOD

Theissen, EL EM. SVM. A

Pb

REF. NO.

z

208 82

75 Sc 8 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ ABX 6- 11 D 50 MAG-D 129

Reanalysis of part of previously

published data found in 72Bul9. (Ref. 5) F. R. Buskirk et al. Phys. Lett. 42B , 194 (1972)

.

inO

I

<5o

eo

a

o

e

•o

Scattering angle

BROAD PEAK AT 8.9 MEV

FIG. 1. Spectra of lneiastically scattered electrons from **Pb„ Moderate-resolution data (Ref. S) are shown in the upper half, and high- resolution data in the lower half. The raw data are given. The solid lines Indicate the background used in the analysis and

the assumed line shape, respectively.

FIG. 2. Ratio of inelastic to Mott cross section as a

function of scattering angle. The sum of the cross sections for the states at 10.2, 10.6, and 11.2 MeV excitation energy is given on the right-hand side; the cross

section for the 8.9-MeV resonance is shown on the left- hand side. The full points show the results of the lowresolution data; the open circle is the result of the high-resolution measurement. The error bars include

the uncertainties in the radiation tall and background

subtraction. The full curves result from DWBA calculations described In the main text.

TABLE I. Results deduced from combined low- and

high-resolution (e ,e') data from Fig. 2. The uncertainties in the transition strengths are comparable for

the low- and high- resolution data. r

Bx (MeV)

B(EL)

(fm2C

) r

(MeV) BeV) /Bcvg*

2* 8.9 3100* 1200 1.3 *0.2 0.35 2* 10.8 6000* 15001 2.7 *0.2 0.80

1* 14.1 59* 5 4.05* 0.3 b 1.12c

a Sum of triplet of states at 10.2, 10.6, and 11.2 MeV.

b Taken from the (y, n ) data of Ref. 2.

c Obtained from the Thomas- Relche-Kuhn sum rule.

High-resolution Inelastic electron scattering [full width at half-maximum (FWHJiD =* 38

keVj with 50- MeV electrons on :o,Pb yields a width I* = 1.3* 0.2 MeV for the 8.9-MeV resonance. This result together with the results from a rcanalysis of older data with moderate energy resolution (FWHM=* 300 keV) shows that the previous identification of the 8.9-MeV resonance as a monopole excitation Is not conclusive. The excitation of this state may as well be E2. The giant quadrupole resonance at lO.S.MeV seen in former measurements has been reanalyzed.

2A. Veyssiere et al., Nucl. Phys.

A159 , 561 (1970)

.

5 F.R. Buskirk et al., Phys. Lett.

42B , 194 (1972).

FORM N3S-418

IR EV. 7-1 4.84) USC OMM-N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 272
K. Shoda, M. Sugawara, T. Salto

Nucl . Phys. A246 , 357 (1975)

METHOD

H. Miyase EL EM. SYM.

Pb 208 82

REF. NO.

I 75 Sh 5 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

type range TYPE RANGE E,P NOX 8- 40 D 25,40 MAG-D DST

Fig. 3. Angular distributions of photoprotons. The letters 'show proton regions indicated in fig1

by the same notations. Solid lines are obtained by the least square fit with eq. (2). All data are normalized at 0 90° to unity.

Fig. 1. Energy distributions of photoprotons with the (e, e'p) reaction by the 25.0 MeV electron beam. The emitting directions are indicated in the figure. The letters in the lowest figure show

proton regions used to obtain angular distributions.

Fig. 4. Angular distributions of photoprotons. The letters show the proton regions indicated in

fig. 2 by the same notation. The data (A), (B) and (C) correspond to IAR groups. Solid lines are obtained by the least square fit with eq. (2). Broken lines are the angular distributions obtained from the proton inelastic scattering data on 20 *Pb [ref. 7

)J. All data are normalized to unity at Q =» 90*. form N3S-418

IR EV. 7.1 4. 641 USCOMM-NBS-OC

7 P. Richard et al. ( Phys.

Rev. 183 , 1007 (1969)

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 273
Fig. Z Energy distributions of photoprotons measured with a mixed beam of bremsstrahlung and

electrons of 40.0 MeV. The letters show the proton regions used to obtain angular distributions. The hatched area shows separated IAR proton groups for which - "gular distributions are measured.

Table 2 The parameters of angular distributions obtained by the least square fit with eq. (2) using the present data

Notation Energy

region of

proton (MeV)

«o «i «s

‘ ««

£*-

(a)

25.0 MeV

8.7- 9.4 0.83 ±0.16 0.59±0.32 —0.5±0.6 -0.2 ±0.5 —0.4±0.6

(b) 9.4-10.6 0.89 ±0.03 0.59 ±0.09 -0.2±0.2 -0.0 ±0.2 —0.0±0.2

(c) 10.6-11.3 0.99±0.10 0.69 ±0.20 -0.2 ±0.4 —0.2 ±0.3 -0.1 ±0.4

<d) 11.3-11.8 1.00±0.04 0.88 ±0.09 -0.1 ±0.2 -0.3 ±0.2 -0.2 ±0.2

(e) 11.8-12.1 0.95±0.15 0.93 ±0.30 0.0 ±0.5 0.0 ±0.5 -0.1 ±0.6 (0 12.1-12.9 0.94 ±0.09 0.90±0.17 —0.4±0.3 -0.3 ±0.3 -0.6 ±0.3

(8) 12.9-13.7 1.11 ±0.19 1.35 ±0.37 0.2 ±0.7 -0.2 ±0.6 -0.5 ±0.7

(h) 13.7-14.0 1.24±0.19 1.65±0.40 0.6±0.7 0.1 ±0.6 -0.1 ±0.6

(i) 14.0-14.5 1.28 ±0.40 Z13±0.86 -0.8 ±1.4 -0.2 ±1.2 -2.1 ±1.2

0) 14.5-15.8 1.07 ±0.06 1.06 ±0.11 0.5 ±0.2 —0.4±0.2 0.4 ±0.3 Et = 40.0 Me V

(a) 8.8- 9.4 0.95 ±0.01 0.19±0.02 0.05 ±0.04 -0.31 ±0.03 0.19 ±0.05

(b) 9.4-10.7 0.99 ±0.04 0.21 ±0.04 0.15±0.14 -0.08 ±0.10 0.22 ±0.1

8

(c) 10.7-11.5 1.02±0.02 0.26 ±0.03 0.22 ±0.08 -0.10 ±0.06 0.22 ±0.09

(d) 11.5-12.0 1.03 ±0.03 0.36 ±0.04 0.15±0.11 —0.19±0.07 0.09 ±0.1

4

(e) 12.0-12.3 1.06 ±0.05 0.57 ±0.07 0.10±0.19 —0.27±0.13 -0.02 ±0.23 (0 IZ3-13.1 1.05 ±0.02 0.66 ±0.02 0.29 ±0.06 —0.16±0.05 0.24±0.08

(8) 13.1-13.9 1.09 ±0.04 0.74±0.04 0.1 5 ±0.1

3

—0.30±0.08 —0.08±0.16

(h) 13.9-14.2 1.11 ±0.01 0.74±0.02 0.17±0.05 -0.37 ±0.03 —0.08 ±0.06

0) 14.2-14.8 1.16±0.03 0.89 ±0.04 0.23 ±0.12 -0.23 ±0.07 —0.14±0.14

(j> 14.8-16.1 1.15 ±0.01 0.84±0.01 0.30 ±0.02 —0.20 ±0.01 0.01 ±0.02 00 16.1-16.8 1.14±0.12 0.83±0.17 0.31 ±0.50 —0.30±0.35 -0.01 ±0.59

0) 16.8-18.0 1.26 ±0.01 1.11 ±0.01 0.48 ±0.03 -0.11 ±0.02 —0.07 ±0.04

(m) 18.0-19.4 1.29 ±0.02 1.22 ±0.02 0.53 ±0.07 —0.14±0.04 —0.02 ±0.08

274
ref. k. Shoda, S. Oikawa, T. Saito, H. Miyase, A. Suzuki

Nucl. Phys. A246 , 365 (1975)

El. EM. SVM.

Pb 208 82

METHOD REF. NO.

reaction RESULT EXCITATION energy

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E.P ABX 20- 29 D 19- 29 MAG-D DST

OS- , 0<Pb(*.e) r\

~

Plane-wave Born approximation virtual-photon

spectrum used to obtain photo cross section.

24 26 Ex (MrV) •30

Fig. 4. Photoproton cross sections of i0, Pb analyzed from the (e, e'p) cross sections of fig. 3. The

solid line is the 0 = 90* result and the dotted line the 0 = 125.3* result.

S0*Pb T)*77

Fig 1. Level diagram and allowed transitions relating to the electromagnetic excitation of J0 *Pb.

Fig. 7. The differential cross sections of (y, p0 ), (y, Pi), (y. pj) and (y, p) at 0 = 125.3*. The ratio between the (y, p2 ) and (y, p) cross sections is also shown.

rorm N3S-418

<R E V. 7* 1 4-641 use OMM-N 0S-OC

(over)

U.S. DEPARTMENT OF COMMERCE national bureau of standaros PHOTONUCLEAR DATA SHEET 275
C.B. Dover et al., Phys,

12

Yu. I. Sorokin et al., JETP (Sov

(1963) 1127

Lett. 32B (1970) 253

Phys . ) 16

13

18

H. Dahmen et al. Nucl. Phys. A164 (1971) 140

Nucl. Phys. A159 (1970)

20

21

A. Veyssiere et al.

561

V. Gillet et al., Nucl. Phys. 8£ (1966) 321

T.T.S. Kuo et al., Phys. Lett. 31B (1970) 93

Fig. 2. Energy distributions of protons emitted at 0 = 90* from ao(Pb bombarded with a mixed beam of electrons and bremsstrahlung. The ordinate is indicated for the cross sections of the

(e, e'p) reaction. Broken lines show the maximum proton energies.

Fig. 8. Comparison of the cross sections of the photorcactions of i0# Pb. The (y, n) cross sections are from ref. *•). The (y, p) results are as follows: the broken curve: ref. ll

); closed dots: ref. 13

); solid curve: present data. The lower figure gives the theoretical estimates: open solid line: ref. 20

) in sec" 1

; open dashed line: ref. S1

) in W.u.; thick line: 1" IAR, ref. 3

), ry

in 100 eV steps; thick dashed lint: 2* IAR, ref. 3

), ry

in 100 eV steps.

06-

05-

T0.4-

03-

Pble.e'p) Ep>2?MeV 6- 9<f x 1/1.5/** .

.* * ** v*** S y* e=«5J*

Fig. 3. The differential cross sections of the (e, e'p) reaction. The data at 0 = 125.3* are obtained with an electron beam and those at 0 »• 90* are obtained with a mixed beam of electrons and

bremsstrahlung. The effect of the bremsstrahlung is converted to the equivalent electron.

276
N. K. Sherman, H. M. Ferdinande, K. H. Lokan, C. K. Ross

Phys. Rev. Lett. 35 , 1215 (1975)

EL EM. SYM.

Pb 208 82

methoo REF. NO.

75 Sh 9 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE G,N ABX 7- 13 C 8- 13 tof-d 90

(8.8-12.5)

We have observed more than fifty peaks between 400 keV arc) 4 MeV In photoneutron

spectra of sw fb. Transition* occur to the ground state and first two excited states of

:#TPb from discrete absorption features, some of which are less than 100 keV wide even above 11 MeV. Three states, the most prominent of which Is at 9.034 MeV, under lie a controversial electron-scattering resonance, supporting an £2 rather than £0 interpretation.

FIG. 2. Ground-state cross section from the upper 520-keV portions of the photoneutron spectra. Peaks are

labeled with the photon energy in MeV. The total cross section is approximate (±10^ since the angular distribution has not been measured. Total cross section obtained by assuming

w(0) = 2-P

2 (cos9)

.

(over)

form N3S-418

IR ev. 7-1 4* 041 use OMM-N 8S-0C

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STAnOARCS PHOTONUCLEAR DATA SHEET 277
TABLE I. Observed neutron peaks classified under energies Tj, corresponding to photon energies * In the ground-state cross section a0; and

energies T, and T2 corresponding to excited-state transitions with cross

sections ot and <rt

. Spins J and Integrated total cross sections faT of the JWFb states give radiative widths rr

„. Underlined peaks: ground- or excited-state nature evident In spectra (Fig. 1).

k

(MeV)

T

0 (keV)

T

1 (keV)

T

2 (keV) <Sl/<J 0 oi/a0 jV*

(MeV-mb)

c J

rYO

(eV)

8.S3S 1163 1. 1:0.3 1 712

8.707 1332 1.210.4 1 812

8.875 1S00 908 589 1.0t0.2 • 0U.01 1.010.3 1 712

8.952 1576 1013 703 0.6:0,

1

0 5 .tO . 3 1.210.2 1 812

9.034 16S8® 1085 765 0.7i0.2 0.210.1 3.010.4 2 1312 TABLE fi. Measured widths T, radiative widths r Y » 9.421 2043® 1484 1148 0.410.1 0.610.1 5.510.4 2 2612 In units of single-particle widths rw, reduced matrix

elements B(E2t) for mPb states believed to be 2*. and

9.58 2210 1282 fractions f of the energy-weighted sum rule fouxxi at 9.640 2261 1694 1356 0.410.1 0.S10.1 1.810.

1

1 1411 photon energies k, if J *2*.

9.701 2322 1746 1424 6.414.4 1.310.1 3.SH.8 1 29114 b r r70 B(E2t)

9.783 2410 1833® 1S36 4.813.2 0.710.1 4.612.3 1 38119 (MeV) (keV) <r w) (e’-fm4

) /

9.863 2483 1918 1590 2.110.5 0.610.1 1.S10.3 1 1312' 9.034 45i9 3.6 13401210 0.15

9.421 104il2 5.9 21501160 0.25

9.925 2545® 1974 10.06 132 = 22 10.5 3850 H420 0.48

10.065 2684® 2116 1781 0.310.1 0.210.1 12. 111.6 2 64123

10.14 2738 2170® 1855 2.010.4 1.910.7 2.St0.5 1 2214

10. S3 3148**

10.69 3309

10.91 352 8**

11.17 3782®

* Peaks at about these energies have been previously observed (Ref. 4).

b/ffy-/o9a +<T t /o0 +<T2/tX 0),

KE1 or Ail transition assumed except where E2 strength Is reported

(Refs. 1, 2, 5, 6).

*R. Pltthan, F. R. Busklrk, E. B. Dally, J. N. Dyer,

and X. K. Maruyama, Phys. Rev. Lett. 33, 849 (1974). *M. Nagao and Y. Torlzuka, Phys. Rev. Lett. 30, 1068

(1973). *W. Bertozzt, C. P. Sargent, and W. Turchlnetz,

Phys. Lett. 6, 108 (1963); C. D. Bowman, R. J. Baglan, and B. L. Berman, Phys. Rev. Lett. 23, 796 (1969); R. K. Toohey and II. E. Jackson, Phys. Rev. C 6, 1440

(1972).

4R. G. Johnson, J. D. Irish, and K. G. McNeill, Can.

J. Phys. 53, 1434 (1975). ’Reactor photon experiments (llnewldth “6 eV) Indi- cate E1-E2 Interference at 8.999 MeV, where the tails of these two peaks overlap: W. V. Prestwich and J. McFee, private communication. They observe a ug

:(7

t :Oj ratio of 1.0:0.42:0.79 and 1/(42^ -/(138*)J/U(421 + /(138*)J— 0.41. *M. B. Lewis and F. E. Bertrand, Nucl. Phys. A196. 337 (1972); N. Marty, M. Morlet, A. Wilis, V. Corn- pant, and R. Frascarla, Nucl. Phys. A338. 33 (1975). 278
REF. EL EM. SYM. A Z

' Yu. I. Sorokin and B. A. Yur'ev

Izv. Akad. Nauk SSSR. Ser. Fiz. 39_, 114 (1975)

Bull. Acad. Sci. (USSR) Phys. Ser. 39, 98 (1975) Pb 208

METHOC! : REF. NO. 75 So 12

82

hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.XN ABI 7- 27 C 7- 27 BF3-I 4PI

SEE 73 S021

Table 1

Ce- ment A

MeV • b

aOy* MeV b *-!• mb

®-2. mb X XMeV-l

Em* MeV

K, MaV

11.4— ll MeV-*

Thraa- hold

(7.JO). MaV

»0< E‘ MaV X

to 27 MeV X b

to 20 MeV

JO-27 MaV

ii? 2.23 \S0 1.49 0.41 112 6.7 15.8 . n ! 10.2 19.2 1.60

114 2.26 1.66 1.39 0.47 108 6.5 15.7 1.5 10.2 18.1 I.G8

116 2,40 1.85 1,40 0.45 no 6.6 15.6 1.7 8.1 17.1 1,71 117 2.52 1 .86 1.39 0.47 no 6.7 15.4 ; i .6 7.3 16 .

S

1.72 Sn 118 2.46 1 .92 1.53 0.39 ns 7.1 15.5 10.7 7.6 16,3 1.71 119 2.63 1.86 1.42 0.44 in 6.8 15.4 22.0 13.2 15.8 1 .74 120 2.69 2.07 1.69 0.38 127 7.9 15.3 19.1 3.6 15.6 1 .75 122 2.94 2.03 1.51 0.52 n«» 7.1 15.6 21 .8 4 .5 15,0 1.77

124 2.90 1.93 1.44 0,49 114 6.9 15.5 23.2 5.4 14.4 1.79

182 3.68 2.78 2,32 0.40 184 12.5 24.2 5.2 14.9 2.63 " i 184 4.88 2,95 2.39 0.72 196 13.0 — 23.7 5.2 13.6 2. 65 Au 197 4.06 3.15 2.81 0.34 226 IS .

5

13.3 20.9 17.1 14.8 2.84 296 3.93 3.21 2.80 0.41 225 16.1 13.5 23.1 6.5 14.

«

2.96 ph

, 208 4.32 3.28 2.81 0.47 211 16.7 13.3 22,6 0.6 14.1 2.99

0i 209 4.59 3.47 2.96 0.51 2 If, 17.9 13.2 21.3 10.2 14.3 3.00

form N3S-418

1 R EV. 7.1 4-641 use OMM»N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 279
REF.

METHOD

T. E. Drake, H. L. Pai, I. Nascimento

Nucl . Phys. A259 , 317 (1976)

Pb

REF. NO.

208 82

76 Dr 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E.F ABX 25- 45 D 25- 45 TRK-I DST

-

Abstract: The fission yields from the electrofission of 30*Pb and 20*Bi confirm the theoretically predicted large difference in the fission barrier energies ofthese nuclei In addition the level density parameters

at the fission saddle point were measured for 20,Pb and 20,Bi.

E, (MeV)

Fig. 3. The yield curves are shown for 2#*Bi and 10, Pb. The data points are shown with the error bars and the theoretical fit as a dashed curve.

ANGLE » (DEGREES)

Fig. 2. The angular distribution of fission fragments from ,0*Bi (top) and

,0, Pb with respect to the direction of the incident electron beam of energy

43.1 and 42.8 MeV respectively.

form N3S-418

(REV. 7-I4-S4I USC0MM-N8S-0C

Table 1 The measured level density parameters and the fission barrier energies for 20*Pb and 20*Bi 2MPb 2#*Bi

«,(MeV-‘) 8.1 ±1 10.2 ±1

Of (MeV *) 10.8±1 I3.0±! A (MeV) 27.6 ±0.5*) 23.4±0J

4. (MeV) 0.6

*) This value of the fission barrier B, includes the pairing energy Jr

.

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 280
REF.

methoo

J. Friedrich, N. Voegler, H. Euteneuer

Phys. Lett. 64B , 269 (1976)

ELEM. SYM. A

Pb

REF. NO.

208 82

76 Fr 6 egf

REACTION result EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,E/ FMF 2- 7 D 120-290 MAG-D DST

for the levels at the indicated energies. Sets I and ill are explained in the text.

17 LEVELS

a

qt„(fnr')

Fig. 2. Position o'the first tr.ir.imum (a) and maximum (b) of

tha measured form factors. The vertical bars indicate the cor- responding positions for a transition charge with multipolarity J peaked at the surface of the nucleus. The numbers of the

levels refer to the table.

form N3S-418

IR E V . 7-1 4. 64) USC OMM-N BS-O C

( over

)

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTOHUCLEAR DATA SHEET 281
Table 1 Energy, form factor maximum and multipolarity of the levels investigated in this experiment. - no. of level according to

fig. 2.

No. of

level

Energy (MeV) Form factor maximumMultipolarity from ee’

This exper- Ref. [4] iment

1 2.615 * 5.2 ± 03 (-4) 3

* 3 2 3.198 • 3.7 ±0.4 (-5) 5* S

3 3.709 » 2.0 ±0.2 (-5) 5* -

4 4.086 • - 2* 2

5 4.324 » 1.45 ±0.15 (-4) 4* 4

6 4.424 • 63 ±0.9 (-5) 6 » -

7 4.61 1.8 ±0.2 (-5) 8 —

8 4.70 2-S (-5) 3 -

9 4.83 b c —

10 5.07 9 ± 1 (-6) 10 —

11 5.23 5.6 ± 0.6 (-5) 4* 3(4)

12 - 5.35 6 ± 1 (-5) 3 —

13 5.53 3.2 ±0.6 (-5) 3* 3

14 5.69 4.5 ± 0.5 (-5) 4 5.6 MeV

IS 6.00 » 43 ± 0.5 (-5) 6 —

16 6.17 d 2

17 6.25 d

*: Spin and energy taken from [11], used here for calibration;

b: more than one maximum; c : no clean structure in the form

factor as a function of q, but there are clearly seen contributions from high-spin states (7» 8-10); <*: no clean structure in the form factor as a function of q ; *: several multipoles, the

lowest one is given here. The numbers in brackets are the powers to ten.

232
REF.

METHOP

R.J. Holt and H.E. Jackson

EL EM. SYM. A z Phys. Rev. Lett. 36, 244 (1976)

Pb 208 82

REF. NO.

76 Ho 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE QETECTOR

ANGLE

TYPE RANGE TYPE RANGE

$ G,N LFT 7- 9 C 7-9 tof-d DST

(7. 9-8. 4)

The photoneutron polarization from states near threshold was measured, for the first POL N, THRESH MEAS

time, for the reaction 20, Pb(y,n() ) 20T Pb throughout the neutron energy range 500 to 1000 keV. Spin and parity assignments were made for these states. The giant Afl resonance

In 2wPb was found to be less fragmented than previously thought. The data suggest that there is some “missing" Afl strength in 20!Pb.

FIG. 2. The curves represent the calculated polarization using the isolated-level approximation [Eq. (1)] in the region of the 603—613-keV resonances. The tri- angle represents the energy resolution of the time-offlight spectrometer.

TABLE I. Summary of results from the threshold photoneutron polarization experiment.

Er (keV)

Polarization

0 = 90* 0 - 135* J

n r

1

996 No Yes 1* 5.8 951 No Yes 1' 3.5 907 No Yes 1' 6.5 846 No Yes 1* 10.1 737 No Yes 1‘ 3.5 651 No Yes r 11.8 613 Yes Yes i* 19.7 603 No Yes i* 8.0 538 No Yes i* 12.8

FIG. 1. Upper half: The measured photoneutron polarization in the energy range 500 to 1000 keV at angles

of 90* and 135*. The error limits are primarily statistical in nature. Only the 613-keV resonance emits polarized neutrons at both 90* and 135*. Lower half: The raw time-of-flfght spectra observed at 135° for neutron scattering angles of * 50* with and without the sol- enoidal field.

‘Values of Tv were taken from Ref.4.

r# NUCLEAR DATA SHEET 283

U.S. DEPARTMENT of COMMERCE

NATIONAL BUREAU OF STANOAROS
ReF- Jo E. McFee, W. V. Prestwich, T. J- Kennett

Phys. Rev. C13 , 1864 (1976)

EL EM. SYM.

Pb

A

208

z

82

METHOD REF. NO. 76 Me 3 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OET ECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.N ABX 8- 9 D 8-9 ION-D 90

The photoneutron spectrum of aatural lead had

Jrr. • been observed for photoe ^citation energies of 8999, 8533, and

on a nickel target positioned in a nuclear reactor. The Q values for the three reactions “‘Pbfy, n)M7Pb, M7Pb-

(y, n)30*Pb, and J0*Pb(y, n)20,Pb have been determined and are, respectively, 7369 ± 5, 6743 ± 3. and 8087 ± 3 keV. Neutron groups corresponding to different final states following excitation by one of the three photon components have been observed and their partial cross sections are reported. The distribution and some

systematics of the neutron reduced widths have been studied. The absolute cross sections of the reaction ““Pbfy, it)307Pb at 8999 and-8333 keV photon energies have been found to be 6.8 ± 2.9 and 5.0 ± 2.1 mb, respectively.

8999,8533,8120 KEV

TABLE V. Reduced widths contrasted with spectroscopic factors.

Neutron Reduced Widths Spectroscopic factors Residual

V £ =8999 keV E=3533keV £v = 8120 keV C‘S/(2J+l)

nucleus (keV) J

r £1 E2 (±27%) ( p.d) id.t)

M7Pb b b

0

!“ 7

0 1 163 123 0.72 0.71 570

5- T

2 1 210 309 0.90 e 0.97 e

898 IT 0 1 191 327 1.27 1 .33 d *«Pb 0 0* 0 1 26 107 321 0.30 *'•

803 2* 0 1 959 308 0.11 1165 0" 0 1 294 118 0.19

1460 2* 0 1 152 e 0.38 1684 4* 2 1 474 e 0.02 c 1704 l* 0 1 285 0 0.38 1784 2* 0 1 176 e 0.07

205pb 263 1-

2 0 1 190 e 1 .02 f 1.56 *

1 Minimum possible neutron angular momentum for a given photon multipolarity.

b Reference 18.

c Spectroscopic factor for Z„= 3. All others are /„= 1. d W. A. Lanford and G. M. Crawley, Phys. Rev. C 9, 646 (1974).

e May exist but cannot be resolved from neighboring components!

f K. Yagi, T. Ishimatsu, Y. Ishizaki, and Y. Saji, Nucl. Phys. At 10 . 41 (1968). 8R. Tickle and J. Bardwick, Phys. Rev. 178, 2006 (1969).

TABLE VI. Absolute photoneutron cross sections.

Target

Isotope Photon energy

(keV) Cross section 4 (mb) Lower bound 4 (mb) Upper bound 4 (mb)

203 8999 6.8 • • . • • • 8533 5.0 . . . • • • 207 8999 ... 20.0 40.1 8533 ... 3.3 26.8 8120 ... 5.6 • . • 206 8999 ... 2.3 14.0 8533 O • 0 0 15.1

4 10% relative error; 45% absolute error. FORM N3S-418

in ev. 7-1 «. 84 i use OMM-N 8 S-DC

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATASHEET 284
TABLE IV. Low-lying states In mPb, ^Pb, and l**Pb. Observed neutron Relative1 Residual £r E, energy (lab) intensity a

b

r» isotope (keV) (keV) J

w (keV ± 5) (±10?) (mb)

207 8999 0

c 1615 100 3.1

570 5 ” T

.554 42 1.3

898 727 79 2.4

8533 0

r- 1159 66 2.1

570

y~ 7

601 12 0.4

898

3-7

263 81 2.5

206 8999 0

d 0* 2256 e 19 0.6 803 2

* 1446 556 17.2

1165( ± 10) 0* 1037 143 4.6 1460 2* 739 65 2.0 1684 4* 573 15 0.5

1704( ±1) 1* 551 102 3.2 1784( ±2) 2* 473 59 1.8 8533 0 0* 1730 69 2.1 803 2* 932 147 4.5

1165( ±10) 0' 619 45 1.4 1704( 1 1) 1* ... 0 0.0 8120 0 0* 1370 e 181 5.6 205 8999 263 ' 3-7

643 74 2.3

Unresolved groups A 206 8999 1340 3' 903 7G 205 8999 0 2*7

205 8999 2 r~

B 206 8533 1340 3’ 446 65 205 8533 0

3 “ 7

205 8533 2 JL“ 7

C 205 8999 576 7

330 44 206 8533 1460 2* *

D 205 8533 263 i.-

2 181 37 207 8120 570

y~ 7

206 7724 803 2*

207 7555 0

E 206 3999 2 1 50 ( ± 1) 2* 110 61 205 8999 803 (V,f)

Unassigned group

... ... ... ... 537 5

1 Arbitrary normalization corrected tor isotopic abundance and photon yield. Unresolved

group intensities have no isotopic abundance or photon yield correction and are merely quoted

relative to the group corresponding to population of the :

' - Pb ground state following 8999-keV

photoexcitation.

h Relative error 10%, absolute error 45%. 'Reference 18. M. R. Schmorak et al . , Nucl. Data B5,

d Reference 19. 19

* Centroid accurate to only 13 kcV. K. K. Seth, Nucl . Data B7 , 161 (1972)

f Reference 20. 20 _J. H. Hamilton et al., Phys. Rev. C6,

207 (1971)

.

1265 (1972) .

285
REF.

METHOD

. P. B. Smith EL EM. SYM. A z Phys. Rev. C13., 2071 (1976)

Pb 208 82

REF. NO.

76 Sm 4 hmg

REACTION EXCITATION ENERGY

SOURCE OETECTOR

RESULT ANGLE

TYPE RANGE TYPE RANGE

G.G LFT 7 D 7 NAI-D 90

(7.685) (7.685)

ryo

RESONANCE ABSORPTION

r 1.1

+0.5

-0.3 keV

A neutron unbound state lying at E, « 7685 keV in

301 Pb, purportedly belonging to the giant Ml resonance in

this element, has been studied in resonance absorption with y rays from the E, = 1354-keV resonance in the **S(p,y)MCl reaction. The absorber was 3-cm natural lead. The tungsten collimator subtended a (geometrical)

half angle of 0.77* at the target. The absorption dip was fitted with a five-parameter Lorentz curve. The level parameters found are E. = 316.0 ±0.8 keV, T, = 1.1 toj keV. and Tr0 = 14l‘ eV.

FORM N3S-418

IR EV. 7-1 4-941 USCOMM-N8S-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAUOF STANOAROS PHOTONUCLEAR DATA SHEET 286
REF. R.J. Sparks, H. Lancman, C. Van der Leun

Nucl. Phys. A259, 13 (1976)

ELEM. SYM.

Pb

z

208 82

method REF. NO.

76 Sp 1 egf

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

angle

TYPE RANGE TYPE RANGE

G# G LFT 7 D 7 SCD-D 90

7 = 7.064 MEV

Abstract: The level at 7064.3 ±0-5 keV in ao*Pb has been excited in a resonant absorption experi- ment by Doppler shifted y-radiation from the ,4S(p, y)**C1 reaction at £, =« 1974 keV. Analysis of the absorption integral gives f 18±3 eV for the level width, assuming a 100 % ground

' state branch. The suitability of this technique for measuring lifetimes of nuclear bound

states in the attosecond range is discussed.

Fig. 3. Transmission of the 7.06 MeV y-rays through the lead absorber and the slit. The solid curve

is the result of fitting a Gaussian function plus a linear background to the experimental data. The dip

minimum occurs at 105.20*±0.Q8* and the absorption integral is Aa » 0.26*±0.05a

. The value of the normalized for the fit is 0.68.

form N3S-418

(R EV. 7-1 A- 64) use OMM-N BS-OC

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 287
REF. D. Turck, H.-G. Clerc, H. Trager

Phys. Lett. 63B , 283 (1976)

EL EM. SYM.

Pb 208 82

METHOD REF. NO.

76 TU 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,F ABX 29- 50 D 38- 50 TRK-I 4PI

Fig. 1 . Cross section o

e

for electron induced fission in 204,206,207^08 pb ^209 gj as a functjon 0f incident elec- tron energy Eq.

FISSION BARRIER

Fig. 2. Summary of fission barrier heights obtained from fits to experimental fission cross sections for nuclei with Z < 85.

o: a-induced fission [12], For 201

Tl, the value of 22.5±1.5

of ref. [3] is also included; a; proton-induced fission [12J;

o: electron induced fission (present work). Values for different isotopes of the same element are connected by straight lines. The nuclear charge numbers are indicated. The erors are 1 1.0 MeV for proton and a-induced fission [12] and * 1.5 MeV

for electron induced fission.

3 U. Mosel, Phys. Rev. C6 (1972)971.

D . S . Burne

12

(1964) 952.

L.G. Moret

(1972)471.

et al.

,

Phys

.

Rev. B134

et al . , Phys

.

Lett. B38

Table 2

Fission barriers Bf as determined from electron induced fission. In the last column theoretical fission barriers according to ref. [1] with surface independent pairing strength are listed.

isotope Bf (MeV) Bf

heor- (MeV)

Pb 24,0±1.5 24.0 Pb 26.8*1.5 26.2 Pb 26.9*1.5 Pb 28.6*1.5 28.1 Pb 24.3*1.5

form N3S-418

IR EV. 7-1 4-941 USC OMM-N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF ST ANOAROS PHOTONUCLEAR DATA SHEET 288
REF K.V. Alanakyan, M.Dzh. Amaryan, R.A. Demirchyan,

M.S. Ogandzhanyan, & Yu.G. Sharabyan

Yad. Fiz. 25, 545 (March 1977)

Sov. J. NucT. Phys. 25^ 292 (March 1977)

METHOD

K.Sh. Egiyan, ELEM. SYM. A

208 Pb

REF. NO.

82

77 A1 9 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle

TYPE RANGE TYPE RANGE G,P ABX 72-999 C 2 *5 TEL-D DST

(4-5)

COMMENTS: f ~ exp(-Bp

2

) *E,GEV, 999=4.5 GEV

B = E

P4(d

2a/dfidpQ)

The A * -dependence and momentum spectra of photoprotons in the nuclei IJC

17AJ, “Cu, '"So. and “Pb

have been studied experimentally for maximum bremsstrahlung energies of 2.0, 3.0, and 4.3 GeV. The A - drpmdence stows that the proton photoptoduction mechanism for £,>400 MeV is identical for the entire hmetin-enerpr region 63-280 MeV and the angle region 43-130* for the secondary protona studied. The dependence of the exponent it on the transverse momentum pL is in good agreement with the same

dependence for protona produced in nuclei by primary protons. In the momentum spectra of the invariant croaa section / — (.E/p *)(d *<r/d(ldpQ)— exp(— Bp ^ it is observed that the parameter B does not depend on the incident-photon energy and on the target nucleus, but depends on the proton-detection angle.

FIG. 1. Differential croaa

section for proton photoproduction aa a function of atomic number A of the nucleus at E, *2 GeV. The lines a correspond to 3, » 60*. b to 90: and

c to ISO*. Polnta: o—£,>=64, A—80, O—101, —137. a—

209, and •—280 MeV.

FIG. 3. The same! as Fig.

2. Experimental points: *—

£

0 »0. 13, O—0.25. a—

0.4, 0—1.2, o—2.0, x —

3.0, and •—4. S GeV.

o.z a.} 3.* o.s at o.7 o.f b

: '

9.9

1 0.1 0.3 0.9 0J 0.S 0.7 O.i

(

01 0.1 0.3 O.f 0.3 0 3 0.7 0J A

.

OV/c

FIG. 2. Dependence of the exponent n in the A

m dependence of the cross section for the reaction yA —pA'is* function of proton transverse momentum: a—

£

0 =2. 0 GeV. b—

£

0 = 3. 0 GeV, c—

£

0 =4. 5 GeV. The points for a and b: a—3,-60*. O—90*. o—ISO*; fore: a—3, =46*. o—86*. 0—136-. The

curves show the dependence of n on pi for the reaction A(p,p')A ' taken from Ref. 9.

0.1 O.Z 0.3 0.1 0.3 O.S " 0.1 O.Z 0.3 OM 03 OS

P

1

. (GcV/c)1 p\ (GtVfc)1 FIG. 4. Invariant croaa section / as a function of pi1

, a—for £0 »2.OGeV, b—for £„ = 3. 0 GeV. Experimental points: a.

a, a—for 3,= 60* for the respective nuclei l2 C, s3 Cu, and :os Pb;

o, a, a —the same for 3,=90*; x, *, o —the same for 3, = 150*.

form N3S-418

IR EV. 7-1 4.641 USC OMM-NSS-DC

U.S. OEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 289
TABLE II. Value* of the parameter B In (GeV/c)"2 in the relation Ep

/p\ (dl ai dQ.fdppQ) exp(- Bp )

.

T»«R

j — I

I.- 2.0 G«V w ISO* tor

3.0 G*V W 130* w*

44 C«V w 13T

"C

“Cu *Pb

4874*0412

4300*0.627 4204*0.753

7276*0.482

7.337*0.627 7405*0.721

9.461*0.803

10.473*0.609 10.088*040

6288*0.806 6472*0439

6470*1414

8.623*0.497

8.559*0.622 8858*0.783

10.873*0.977 11.697*0.944

10.983*1.188

6.047 *0.173 8.006*0.49 11262*0.481

B. (G»Vfrf

FIG 6. Dependence of the parameters from the relation

/->e"xp< Bp2

) on the atomic number of the target nucleus. The

•oUd point* refer to £0 = 2.O GeV. and the hollow points to £„

= 3. 0 GeV; the points • and o are for “60*. a and A are for

90*. and and o are for 150*

.

TABLE I. Differential cross section Sa/dUdTQ of the reaction yA —pA

in jih/MeV-sr.

A *T. G.V

£,. M«V

tfl M 101 137 20t 2TB

'«C 2 60 3.720*0.036 2630*0.052 1207*0.037 1.423*0.038 0.725*0.220 0.429*0.016 90 2274*0.045 1.587*0.047 1.130*0.039 0.763*0.022 0256*0.008 0.117*0.007 150 1.152*0.032 0.690*02)14 0.505*0.028 0218*0.007 0.071*0.005 0.021*0.002 60 4.240

0.100 3.424*0.063 1.960*0 043 1.629*0.048 0.653*0.024 0.452*0.019 3 90 2.440*0.056 2.031 *0.040 11 45*0.029 0.807*0.028 0243*0.009 0.088*0.006

150 1260*0.042 0.877*0029 0.438*0.016 0300*0.010 0057*0.003 *

60 8.460*0.127 6.014*0.120 4.083*0.109 3.253*0.097 1313*0.048 •

2 99 5.920*0.107 3.730*0.086 2202*0084 1.718*0.052 0.603*0.018 —

ISO 3.127 *0.078 1.797*0.035 1 189*0.060 0.644*0.019 0.184*0.011 -

3 60 9.960*0239 7.492*0.131 4.160*0.092 3327*0.100 1.568*0.058 0.925=0.037 90 6.090*0.130 4245*0.107 2.688*0.076 1995=0065 0.596*0.021 0239*0213

150 3.750=0.103 2.943*0.081 1234*0.042 0.747*0.025 0.136*0.006 -

40 9210*0.230 - - 1220*0.720 45 88 _ 6200*0.095 - — — 0248*0020

130 * 3280*0.050 «Cu 2 60 23.500=0.129 15.170*0299 10931*0.269 8.163*0.240 3.939*0.110 1115*0.064

90 18.721*0268 9.737*0.231 6.836*0.082 4.411*0134 1.424*0 042 0.743*0.037 ISO 10292*0212 3217*0.103 3.362*0.165 1.807 =0.050 0342=0.021 0.115*0.011 60 20.180*0.590 20280*0.340 10200*0191 8.594*0248 3969*0140 1.681*0084

3 90 17.800*0.320 13 601*0.260 7.316=0.190 5.245*0.172 1.401*0.048 0 676*0.032

150 11.00*0271 7234*0.205 3.388 *0 107 2 237*0.075 0368*0 017 0.097*0.00* 46 _ 27.000*0.750 - _ 3 550*0.180

4,5 86 — 17.401*0.250 - - - 0785*0.060

136 * 9.750*0.150 - - "Sn 2 60 45.001*0.538 30.050*0293 19.970*0 587 13.102*0280 7.137*0.210 90 32.550*0453 18 890*0.466 13940*0.428 8.297 *0.320 2388*0078 —

150 19271*0291 10289*0 203 8.548*0321 3.032*0.090 0.585*0.041 *

£ t

£

P

. M«V

A ov 9*1 6% so 101 137 27»

"•Sb 3 60 53070*1.270 39920*0.980 17.80020 430 16.550*0490 7 028=0.038 3.873*0.140 90 36.600*0.720 28260*0550 1437020.40) 9.54420.328 2.66420.099 1.187*0.055 150 22300*0.560 14.590*0350 6251*0 210 4.103*0150 0684*0.033

46 53200*1.400 _ _ - 5.640*0 320

4.5 88 — 31200*0.51 - - - 1.42020.114 138 - 18250*0 290 - 0J30*0.u38 »Pb 2 60 60.000*1280 56950*1 120 35.200*1.080 23 93020 720 13.440r0.400 7.745=0.310 90 60.990*0.970 34.080*0 800 23.69020 ;:o 14.22021* 4ao 4.52220.135 2.45320.120 ISO 36.890*0.730 18.D8O2O.370 10 63820 320 5.79420.168 1.102=0.077 0 53120.035

3 60 100.740*1130 78 030±l 200 28.00*01)70 28.0*4)20 620 12.810=0.150 7 092*0 230

90 71.350*1270 48.320*0 9u0 24.78* »«o 650 18. 42020. 521* 4.58020.170 22144*0.120 150 41090*0.97(1 27.240x0.680 12.13020 42 7.2942i*i'iO 1.220*0.054 0.589*0.039 46 _ 85.00020.33

0

_ - - 11.600*0.540 43 86 _ 58.78020.D2O - - - 1.050*02114 138 29.600 *0.430 * “ 0.465*0.084

80 lt9 166 231 31

“C 43 46 5210*0260 3.67020 0H6 153020.064 1 19020.046 0.785*0.042 86 2.44020.080 1 13020.052 0 845*0 0.17 0.36320.019 0.105*0.(07 138 1.330*0.0 *» 0 427*0.029 0 l ‘.*6 21 1.015 0.045*0.105 0.013*0002 290
D.F. Coope, L.E. Cannell. and M.K. Brussel

Phys. Rev. C 15, 1977 (1977)

£, 1. £

VI . , l f M .

Pb

A

208

z

82

r.nOO «e-. *.o.

77 Co 3 hmg

rr«; no*. ......

Ex::tstiO%

t *' S

' 5y

see:.

ANCLE

G,G LFT 4 - 7 C 6,10 SCD-D 125

;4. 085-7. 332) (6. 6, 9.

7

— - - • - - —

Using bremivt.-rthlurg produced with 6.6 and 9.7 M.V beams, nuclear resonance fluorescence measurements

were made on targets of :c* :o

' ”’Pb and ^Bi. Ground state transition widths for previously unknown energy 1 1 LEVELS 4.1-7 .3 MeV

levels with width? 5 l cV were obtained. An interpretation of several of these levels in terms of a particle-core weak coupling mode! :s suggested. TABL v IV. Observed levels and their strengths. The value for T 0 assumes gr</l =3' for

irtpb a ~d :,1 Pb, andgTo/T = lfor 2

'’'Pb and 2)3Di. Values in parentheses have uncertainties m excess of 50 7-. Statistical uncertainties are given for well-defined peaks. Total uncertainties include uncertainties in flux calibration. Energy values are believed to be accurate to

±3 keV for the starred (*)

J0S Pb levels and to ±5 keV for the other levels.

Energy

(MeV) Nucleus

To

(eV)

Uncertainty ( c) Statistical Total

6.64 (Pb) 206 7.4 40

6.73 5.5 40

5.202 4.4 15 40

5.5-3-t (3.0) 5.705 (1.0) 5.655 (0.5) 5.61

5

(1.0) 5.577 (0.5) 5.039 1.6 15 40

4.974 0.8 40

6.753 (Pb) 207 (<10> 5.715 (3) 5. 600 (3) 0.450 (12) 5.323 (a) 5.209 (3) 4.950 (7) 4.S75I

(13) 4.347) 7.332* (Pb) 203 38 10 35 7.033* 14 15 35 7.063* 29 10 35 6.721* 15 20 40

6.337 (0.5) 6.305 (1.0) 6.262 4.1 45 5.513* 28 2 35 5.253* 8.6 5 33 4.342* 6.3 5 35 4.055* 0.51 40

5.549 (Bi) 209 6.6 40

5.522 | 5.509 /

' 17 o 35

5.493 ) 5.422 3.3 45

5.293 12 15 40

4.813 i 4.603 > (10) 4.771 ) 4.501 (3) 4.225 (3)

Other measurements *r0Vr r0 (eV) (e V) Rcterences

•> • ITJ (O c to x: c

o >, ^ O 1 M JZ •r- -O •/> -X

CO M CL • +J C -t- to 3 Z ra to E O

CT> ts\ • * c G

Am A 1-10 0 *

(U CU U1

C_) a +jo oj 4.o r„/r = i 12 ro Q

• toat C >. (-) •—1 4-> UVi—

3.6 r 0/r = i 12 ID ,— r— (_)!->

12 -o CO 3 2 OJ IO <U L N m C VO CO O £ (1) C O)^

11. 10

f^m to <T> c —

«

tiotuion

35,41 o i— X) • 11,5 CM . in <u u— s_ (_> c a.

15, 17 ± 2 <c c at • jc O 10 9- o

15,31 *3 li,5 •r- CM r- 3 m <u e •<- "

• <v cn 5 * in i— o 4-> -—

>

CJ1 £ 11, 10 iO +J CM O »3 r- o> U +J fO to

>> to £..§ c 3 «t e

-C •r— C 1- OV

CL. N. 10 — Q.

• c a o • o «— aj+JuoM-

• 3 IO 3 ai O • C " 15 11 r_ 0* • • cn —

U x: 35 <—> <v o C +J '“D r— o Q- —' a> 5 11 71 •r— .»-> •—- in 1_ 4- in d' = r 5.1 =0.S 12 *- 5C OJ _1 TJ r—

17 CO 0 SS

‘c d 'JC r*-9* 0.5 = 0.1 12 v —

•* • HJ CO •«— " cue

C tad • LO 22 e a> a u u c -» c L U -r— -r- a>

(T3 - <U (tJ ", • aj cz i

i <t_ l—

r— or. .£= MU. S. <U HI 4-

GO <u ^ r- • to 1- o O " x • 22 a» •«- aj

• < i/i • • • u- r— c cn Q. >, Z u -a ql c aoxi

• .c • o e • o CL-f— -r— O Q. CL. < 1/1 (U u u < io a

ID O *— CM

1.4 12 r—

2.7 12 2.9 12

j S s» *, -

’ lf ’*

* r ' *> r *. •. T

• t- 291
REF R.J. Holt, R.M. Laszewski, H.E. Jackson

Phys. Rev. C15, 827 (1977)

ELEM. SYM.

Pb 208 82

METHOD REF. NO. 77 Ho 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

angle

TYPE RANGE TYPE RANGE

$ G,N SPC 1 00 t'- C UKN TOF-D DST

(7.57-7.72)

POL NEUTRONS

The photoneutron polarization from resonances near the threshold region was observed for the

:o, PW,y,iv>)J®'Pb reaction. Resonances located at photoneutron energies of 180 and 315 keV, previously believed

to be a large part of the giant M1 resonance, are shown to be E 1 excitations.

PHOTON ENEPGY !VeV>

FIG. 1. Upper graphs represent the observations of

the photoneutron polarization at 90* and 135° for the ISO-, 234--, and 315-keV resonances. Lower graphs

indicate the photoneutron spectra from 20, Pb after scattering from a .Mg analyzer at angles of ±45° and with and

without the field of the neutron spin-precession solenoid.

form N3S-418

IP EV. 7-1 A-SAI USC OMM-N BS-O C

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARD.' PHOTONUCLEAR DATA SHEET 292
Rer. R. M. Laszewski, R. J. Holt, and H. E. Jackson

Phys. Rev. Lett. 38, 813 (1977)

EL EM. SYM. A

Pb 208 82

METHOO REP. NO.

77 La 2 hmg

REACTION RESULT EXCITATION ENCROY

SOURCE OETECTOR

ANGLE

TVRl RANG! TYPE RANGE

$ G,N0 LFT 8- 10 D 9- 11 TOF-D 90

(8. 2-9. 5) (9.0-10.2)

Very-high—energy-resolution photoneutron time-of-fllght measurements In cornbina- POL NEUTRONS, J-PI

tion with high-resolution measurements of photoiv.it ron polarl/.-itlons from the reaction JM Pb(y,*nt) :07 Pb have enabled us to Identify seven probable 1* resonances at excitations between 8.2 and 9.5 MeV. These resonances have a total strength fUMl) t

- W.5 a0.5Vo3

. This strength plus that previously reported at 7 ami at e MeV can account for the .Ml sum

rule ln.

:i5s Pb.

EXCITATION ENERGY (MeVl

FIG. 1. The 90* photoneutron polarization time-of-flight spectra for endpoint energies of 9.0, 9.6, and 10.2 MeV

are shown at the top. The measured background is indicated with x ’s. Below this la the measured polarization.

The error bars are statistical. The analyzing powers of '*(.) and L C are given at the bottom.

foam N3S-41S

IR IV. 7-14.S4I OSC OMM*N ISOC PH0T0NUCLEAR DATA SHEET 293

over

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUACAu OF STANDARDS
FIG. 3. Comparison of the 90*, 9.6-MeV endpoint very-high-resolution time-of-flight spectrum with the corresponding polarization spectrum. Arrows indicate the locations of significant nonzero polarizations.

TABLE I. Listed are (a) the energies at which non- zero polarization is observed (Fig. 1); (b) the energies

of corresponding resonances In the very-high- resolution data (Fig. 2). the deduced spin and parity assign- ments J*, and the ground-state radiation widths I r „. Note that a lower limit was obtained for the Afl strength

by assuming that. In each group, the resonance with

the smallest width Is the 1* resonance.

: o(M«v» 4 E

n(M«V) b E (MeV) b

V

rr J r (eV)

. 840 3.213 2.6 ± 0.

5

0. 83 .846 3. 240 f. i +

tO. 2 i 0. J .355 3.228 2.6 0.5

.993 S. i67 2. 1 tO.I

0.99

.999 8.373 6.2 r 0. 1

1.219 * 3. 594 3. 7 0. 1 t.tt

1.22* 8. o04

1 , 1* 3.3 t 0. 1

1.310 8.ol4 3. 1 t 0.2

1. 32 1.328 8.703 iM*

4.2 * 0. *

1.631 1.008 4. 4 t 0.2

1.63

1.658 1.035

t*. t* Zc.Z : 0. 4

1.77

l. 764 .136 «M*

1.6 i 1.0

1. 770 i. 142 4. 1 ; 0.9

1.921 4 .

1

*1 2.o : 0. 4 1.92

I. '• i4 9.312 r. i * 6.3 : 1 .

1

2. 14

2. 132 9. 12 l

, ) r >.7

2. 157 *. 531 4.3 t ».0

2.258 9.633 1.5 t ". 3 2.2* 2.274 9.6 54 l‘.(l*.2

f

| 7.o ± 1

.

2.29

2.295 «. 0 75 r.d*.2 f

) 1.1 * 9.2

N 2. 524 *. -16 6.5^ : .

;

2.69

294
w- R. Pitthan and

Phys. Rev. C 16^

F.R. Buskirk

, 983 (1977)

EL EM. STM. A 2

Pb 208 82

METHOD REP. NO. • 77 Pi 2 hmg

REACTION RESULT EXCITATION SOURCE OETECTORANGLE ENERGY TVP| range TYRE RANGE

E,E/ SPC 8- 12 D 50,65 MAG-D DST

NX"CLEAR REACTIONS :93?bl«,«'). £0 = 50 and 65 MeV, ** 93* and 129*; measured a V/dSld£It deduced multipolarity, isospia, sura-rule exhaustion, re- duced transition probabilities 3{£\); discussion monopole giant resonance Reanalysis of 75Bul9

FIG. 1. Reanalysis of a spectrum of 64.6- MeV electrons

Ref. 1), scattered inelastically at 93* from asPb with an

overall resolution of 190 keV in the giant resonance re- ! ?-on. The statistical error is smaller than the size of experimental points. The triplet around 10.6 MeV is

h-ut a small fraction of the cross section. In addition to

j 3tates mentioned in the text one has to take into ac-

^-unt lines at 7.4, 7.9, 8.4, and 9.4 MeV. More struc- [ - re is visible at 12 and 14 MeV. The excitation energies j •• the freely fitted resonances, 19.9±0.2) MeV l£0),

12.6 ±0.2) MeV. £li. and (12.5 ±0.9) MeV (£3) denote

'*•* maxima tf the strength functions, not of the cross

lections. I: shall: especially be coted that the strength

•'.'i.nd for the £1 rescr.aace, £‘£1)*60 fm! is in essential freemen: with p-.e < y.m values of 33 acd 75 fm: from

2 and 4, respectively.

FIG. 2. Ratio of the inelastic cross section to the Mott cross section for the narrow line at 10.07 MeV. The

curves show DWBA calculations for a primary energy of 64.8 MeV and an excitation energy of 10.07 MeV. The

method of Ziegler and Peterson iPhys. Rev. 165. 1337

(1969)1 was used to display points from measurements

with different primary energies in the same drawing.

Only measurements with scattering angle smaller than

130* were used to avoid transverse contributions.

1 F . R - Buskirk, H.D. Graf, R. Pitthan,

H Theissen, 0. Titze, and Th. Walcher,

Phys. Lett. 42B, 194 (1972)

^B.L. Berman and S.C. Fultz, Rev. Mod.

Phys. 47, 713 (1975); B.L. Berman,

Atlas of Photoneutron Cross Sections

(Bicentennial Edition, 1976) UCRL

Report No. UCRL-73482 (unpublished).

4A. Veyssi ere, H. Bell, R. Bergere,

Fom±M8s-4it p. Carlos, and A. Lepretre, Nucl . , Phys. aim, sei (1970)

_

rA SHeet 295

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL EUREAUOF STANOAROS
TABLE I- Excitation energies, B values, sum-rule

fractions, and total widths of the £2 or £0 states ia question. The rms ground-state radius of Friar and

Megele [Nucl. Phys. A212 . 92 (1973)1 was used to calculate the £2 and £0 sum rules. The widths but not the strengths of the lines depend on the line shape used; a Breit-Wigner form was found to give the best fit. Multiplying the £2 sum rule by 1.34 gives the equivalent

monopole sum rule for each state; the 3.9-MeV monopole state interpreted as £2. thus, corresponds to 0.33 EWSR (£2, &T = 0). Isoscalar and isovector sums differ by the factor (N/Z).

£, (MeV) T OleV) a* B(E\) (fm4

)

10.07 ± Q.03 0.20 ± 0.0S r.i 0.013 ISO ±30

10.60 * 0.04 0.32 ±0.06 2M 0.02S 280 ±40

11.37 ± 0.0S 0.37 ± 0.03 2* o 1 0.019 200 ±40

8.9 ±0.2 2.0 ±0.2 <r.o 0.47 S300± 500

10.8 * 2.6* 2*,0 0.S6 8200 ±600

*£ » B{EX. ±T)Ej/E7VSRi£\. AT)- *The values from Youngblood et aS. (Eef. 9) were used

ia order to achieve a fit compatible with the (a, a') experiments.

a ! D.H. Youngblood, J.M. Ross, C.M. Rosza, , J.D. Bronson, A.D. Bacher, and D.R. Brown,;

Phys. Rev. C 13, 994 (1976); and private ; communication.

296
m * F S. Raman, M. Mizumoto, and R.L. Mack! in

Phys. Rev. Lett. 39, 598 (1977)

EL CM. SYM. A Z

METHOO

Pb

REF. NO.

208 82

77 Ra 4 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

type rt an gc TYPE PANSC

N,G LFT 7- 9 D 16*856 T0F-D UKN

(7. 4-8. 4)

. Eighteen 5/1 transitions to the I0*Pb ground state have been identified 2nd their radiative widths measured in a study of the reaction : "Pb(« ,y) combined with the results ' from recent neutron transmission and elastic scattering measurements. Iathaexcita- ENERG IN KILOVOLTS

tion region between 7.37 and 8.23 MeV, - 50* of the expected total \n strength in JC8 Pb

has been located.

TABLE I. Comparison of present results for selected J = 1 resonances

with those of other measurements.

En

(keV) /

Ret. 14 r

a

1 n (eV)

Present results p b p b

1 7

1 7o

. (eV) (eV)

Ref. 6 rYo

(eV)

Ref. 7 *\o

(eV)

Ref. 8 r

>o (eV)

30.44 !<-> 13 0.62 2 0.64 2 0.25 0.50 37.73 31 0.83 6 0.76 3 0.71 1.26

4-1.17= 1 * 1220 5.3 3 (5.3) (5.3) (53) (53)

90.18 1 * 272 2.05 4 2.01 4 1.14 101.81 t “ 69 0.35 9 0.32 9 115.20 923 1.83 11 1.55 9 1.77 1.14 127.38

• 613 2.95 6 2.59 5 1.89 130.23 37 1.01 2 0.95 3

155.72 | * 115 0.71 2 0.66 3

181.49 1 * 92 18.0 6 17.9 10 17.4' 18.o' 153 d 256.11 1 “ 3107 21.7 4 21.3 4 19.3 223 20.7 297.90 315 0.77 5 0.71 5 2.1 1.1 316.87 J * 951 10.8 2 10.3 2 8.5 8.8 12.9 335.45 255 1.48 4 1.19 5 0.9 541.9 1547 8.2 2 7.6 2 9.1 11.6 15.6

*Neutron widths mainly from transmission data (Hef. 14). If r„»r7

, the r 7 values are insensitive to the exact value of r„.

b In our notation, 0. 622 = 0. 62±0.02, etc. The statistical fitting uncertainties shown do not include uncertainties due to angular distribution effects which are estimated to be < 10*c. The uncertainty due to systematic

effects is < oac and, in the case of [\ ,, < 7* including normalization at 41 keV.

'This resonance has essentially isotropic y-ray angular distribution. ^Recalculated with r, = 92 eV.

6 C.D. Bowman, R.J. Baglan, B.L. Berman, and

T.W. Phillips, Phys. Rev. Lett. 25^, 1302 (1970

\.C. Haacke and K.G. McNeill, Can. J. Phys. S3,

1422 (1975)

^R.E. Toohey and H.E. Jackson, Phys. Rev. C 6^

1440 (1972)

^ 4

D.J. Horen, J.A. Harvey, and N.W. Hill, Oak

Ridge National Laboratory Report No. 0RNL-5T37 , 1976 (unpublished), p.8, and

private comnunication, and Phys. Rev. Lett.

38, 1344 (1977)

USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 297

U.S. DEPARTMENT OF COMMERCE

NATIONAL 8U* CAy OF STANQAROS
REF- M. Sasao and Y. Torizuka

Phys. Rev. C15 , 217 (1977)

EL EM. SYM.

Pb 208 82

METHOD REF. NO. Page 1 of 2.

77 Sa 2 hmg

REACTION RESULT excitation

ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE E,E/ FMF 2- 26 D 106-250 MAG-D DST

ALSO QUASI-ELAS SCAT

FIG. 7. The cross sections in specific energy ranges for the giant multipole resonances estimated phenomenologically as shown in Fig. 6 are compared with various models. The cross section of the background (right side lower part)

is compared with the Fermi-gas model and L =4 GT form factor.

TABLE m. Percentages of the EWSR In 20SPb below

26 MeV. Contributions from bound states (16% for T- 0 £2 and 20% for T = 0 £3) are included.GT SJ

Multipole Mode

CJ (MeV)

expansion

<%> expansion

{%)

£0 ii o 12.5-15 97 III 10'?J £1 ii »-* 7.4-26 156 :% 1 4^*13 £2 T = 0 7.4-12.5 92’iJ 52 £2 T = 1 15-26 95 :1? 41 ^

£3 11 o 7.4-26 iss:n 94 IJ* "ohm N3S-4I8

(REV. 7*1 4-04) USC OMM-N8S-OC PHOTONUCLE

38

S. Krewald et al., Phys. Lett. 52B , 295 (1974).

^G, Bertsch et al,, Phys, Rev. 18C, 125 (1975).

40

K.E. Liu and G.E. Brown (unpublished)

.

62

E. Lipparini et al., Phys. Rev. Lett. 36.' 660

(1976)

.

65j.F. Ziegler et al., Phys. Rev. 165 , 1337 (1968).

298

(over)
FIG. 8. The spectrum at 183 MeV, 35* was decomposed

Into spectra for £1, £2, £3, and the sum of £4, £5,

and £6 using the q dependence of the Tassie model for

the Isoscalar mode and the GT model for isovector Cower part) and the SJ model for lsovector (upper part). £(££)/ MeV at the right-hand side cannot be applied for

the £2 component of the SJ-model expansion above 17 MeV. Errors are those from fitting. The lowest portion of the figure Is the experimental spectrum after radiative unfolding.

FIG. 9. The Ereit-Wigner line shape fit to the £1,

£2(£0), and £3 strength distributions obtained by multi

pole expansion.

TABLE VI. The RPA calculations for the low-lying collective states in 20 *Pb are compared

with the experimental data of Refs. 62 and 65. B(EL) is in Weisskopf units. RPA values Experiment Ring and Speth 1 Bertsch and Tsai b Liu and Brown u (W.u.) Cd B(EL) Cd B(EL) (Jj BUSL

J* (MeV) B [EL) (MeV) f.V.u.) (MeV) (W.u.) (MeV) (W.u.

3* 2.61 CO <Ji II vO 2.64 31 2.7 29 2.S 33

5* 3.10 11.1*1.4 3.39 7 3.3 6 3.4 14

5" 3.71 8*2 3.S2 8 2’ 4.07 8.1 4.49 8.5 5.4 7 5.6 7 4' 4.32 15 4.69 9 5.4 7 6.4 16

6* 4.42 11.7 4.77 11

‘From Ref. 38. 'Reference 40.

b Reference 30.

299
REF- M. Sasao and Y„ Torizuka

Phys. Rev. C15 , 217 (1977)

method

ELEM. SYM. z

Pb 208 82

Page 2 of 2.

REF. NO.

77 Sa 2 hmg

TABLE V. Excitation energies and percentages of the corresponding EWSR in 20, Pb. The errors of the present data

Include statistical and fitting uncertainties (Table II) and also differences between models (see the text).

2* (T = 0) 0* i7 = 0) 1* (7 = 1) 2* (7 = 1) 3* (7 = 0)

UJ EWSR CJ EWSR ji EWSR U EWSR (J EWSR

Experiment Ref. No. (MeV) <%) (MeV) (%) (MeV) (%) (MeV) a) (MeV) (7c)

(e.e') 3 8.9 22 ~•60 19 -44

9.4 -47

10.0 10.6

(e.e') 73 10.2 14.1 ' 10.6 -35

11.2

(e.e') 67 10.5 95 8.9 50 13.6 105,205 22.5 85 17.5 90

(e.e') 74 8.9 35 14.1 10.8 80

(p.y) 75 23.7

(y.n) 76 9.034 15

9.421 25

10.06 48

(P.P') 5 11.2

(a, a') 68 10.8

V.d') 12 10.8 32 ± 5 13.5 60-100

(e.e') This 11 30-82 13.6 1-124 13.6 115-179 22.5 33-135 16 47-130 work 1

‘Excitation energies obtained by the GT expansion. TABLE II. B(EL) values in fm2^ and ratios to energy weighted sum rules, obtained by

multipole expansion using the Tassie- and GT- model q dependences or the Tassie and SJ

q dependences (right). Ex Expans ion with GT model Expansion with SJ model for 7 = 1 (MeV) El E2 E3 (X105

) El E2 E3 (xio 5

)

TABLE IV. Strengths, center energies, and widths

obtained by the Breit-Wigner line shape fit to multipole

components in Fig. 9.

CJ (MeV) Mode r

(MeV)

B(EL)

or |<r^| 2

GT c.'mansion

13.6 £1(7 = 1) 5.0 90 fm2

10.8 £2(7 = 0) 3.2 9000 fm4

13.6 £2(7 = 0) 1.8 2400 im4 or £0(7 = 0) 1.3 4700 fm4

22.5 £2(7 = 1) 5.0 8100 fm4

16.0 £3(7 = 0) 6.0 5.2 x 10s fm’ SJ expansion

13.1 £1(7 = 1) 5.0 80 fm2 11.0 £2(7 = 0) 2.0 3300 fm4 22.5 £2(7=1) 5.0 2700 fm4 16.6 £3(7 = 0) 5.4 2.3x 10s fm6

7.4— 9.o i9-o :i:l a i a AUfl*230 -t80 1.70*4:?} 15.01?;} <150 1 - 1 * -0.49 22% (7 = 1) 9% (7 = 0) 16% (7 = 0) 17% (7=1) 11% (7 = 0) 9.5-12 14.2*4*4 4410l|fo i *^ b *0.49 13-211:1 26201”°, 1-2512:11 21% (7 = 1) 59% (7 = 0) 15% (7 = 0) 22% (7 = 1) 35% (7 = 0) 15% (7 = 01 12-15 29.3:& 3140 l|Tg 1.1U.0%75 23.5 HI 360 4$ 0.704:?o 54% (7 = 1) 53% (7 = 0) 16% (7 = 0) 52% (7 = 1) 6% (7 = 0) 10% (7 = 0) 15-18 i8.3 4:? l.oy.0,46 i2.3il:S <350 1

1 *0.*?3 -0.67 41% (7 = 1) 2% (7 = 1) 34% (7 = 0) 28% (7 = 1) 20% (7 = 0) 18-26 5260*5128 2.5912:11 8.3li;g 231045° 0.74lS:}f 20% (7 = 1) 94% (7 = 1) 63% (7 = 0) 26% (7 = 1) 41% (7= 1) 13% (7 = 0)

0T0NUCLEAR DATA SHEET 300

u.s. oepartmentof commerce

NATIONAL. BUREAUOF STANOAROS
«er. c. P. Swann

Phys. Rev. C 16, 2426 (1977)

EL EM. SYM. A

Pb

! Z

208 82

METHOP REF. NO.

77 Sw 7 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RAN GC TYPE RANGE

$ G,G LFT 4 C 5 SCD-D 126

(4.843) (4.95)

The linear polarization of the resonantly produced 4843 keV radiation from “’Pb has been remeasured, and the results are inconsistent with either a pure El or Ml transition. A comparison of self-absorption and

scattering results suggests two levels with widths of about 13 eV. It is proposed that one has as l - and the other a 1’ character.

POL SCAT 4.843 PHOT

TABLE L Polarization results for the full energy and two escape peaks (D.E.) of the 4843

and 4087 keV scattered radiation.

<*li (<N\.Vtl) (%) Er (keV) Present Ref. 1 Average

4843 + (0.97 a 1.7S) —(5.41 * 2.36) 4067 -(5.95 * 1.68) — (5.43 a 3.74) -(5.36 a 1.53) 4843 D-E. (0.23 * 0.79) + (0.5 a 1.40) +(0.30 a 0.69) 4087 D.E. + (0.67 * 1.00) * (0.76 a 2.62) + (0.68 a 0.93)

TABLE II. Comparison of self-absorption and scattering results for the 4843 keV line of J0, Pb.

Self-absorption Scattering T, (eV) 17/r (eV)

2.383:” » 4.9 a 0.5*

5.1 a 0.8*

5.7 a 1.9 s 6.3 ± 2.2 d

iv

2

*

‘Present study. *See Ref. 1. 'See Ref. 4.

4 See Ref. 5.

] C.P. Swann, Phys. Rev. Lett. 32,

J.W. Knowles, A.M. Khan, and W.F.

D.F. Coope, L.E. Cannell , and M.L

15, 1977 (1977)

1449 (1974)

Mills (unpublished)

. Brussel, Phys. Rev. C

form M8S*41f

IHCV. 7*1 4* #4

1

USC OMM*N SS*OC PHOTONUCLEAR DATA SHEET 301

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OR STANOAROS
T.R. Yeh and H. Lancman

Phys. Rev. C 16, 1268 (1977)

EL CM. SYM. A Z

METHOO

Pb

REF. NO.

208 82

77 Ye 1 hmg

reaction RESULT EXCITATION SOURCE OETECTOR

ANGLE ENERGY TYfl RANGE TYPE RANGE

G,G LFT 8,8 D 2 SC0-D 85

(7.06,7.08) (2.5)

level 7.06,7.08 MeV

-me width* of the 7.06 and 7.C8 MeV states in ““Pb were determined in a resonance fluorescence

experiment to be Ta = 29 t 3 and 16 * 3 eV. respectively. The '’F(p.«y)'‘0 reaction was used to produce

the incident y rays.

TABLE I. Level widths obtained in this work and In previous experiments.

Et (MeV) j This work Ref. 7 Ref. 8

1*0 f E * ) Ref. 9 Ref. 10 Ref. 11 Ref. 12

7.064 i 29x3 18*3 31*3 29*10

1615

15 32*2.0 1 7.0S4 i 16 *3 17*2 14* 5 15

a The two states were not resolved.

7 R.J. Sparks, H. Lancman, and C. van der Leun, Nucl

.

Phys. A259 , 13 (1976)

8

C.P. Swann, Nucl. Phys. A210, 534 (1974)

9

D.F. Coope, L.E. Cannel , and M.K. Brussel, Phys.

Rev. C 15., 1977 (1977)

10

W. Scholz, H. Bakhru, R. Colle, and A. Li-Schulz,

Phys. Rev. C 9, 1568 (1974)

^A.M. Khan and J.W. Knowles, Bull. Am. Phys. Soc.

19, 538 (1967)

12

R. Laszewski and P. Axel (unpublished)

FORM M8S-41S

(RCV. 7. 1 4. #41 use omm*n a s»o c PHOTONUCLEAR DATA SHEET 302

u.s. oerartmentof commerce

NATIONAL luntAuOr ITANOARO!
w. E. A.- Arakelyan, G.L. Bayatyan, G.S. Vartanyan, N.K. Grigoryan

S.G. Knyazyan, A.T. Margaryan, S.S. Stepanyan, P.K. Kir'yanov

v!a. Maisheev & A.M. Frolov

Phys. Lett. 79B, 143 (November 1978)

METHOD !

9

9 EL EM. SYM. A

Pb 208

REF. NO.

Z

82

78 Ar 9 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G.MU-T ABX THR-30 12*30 NAI-D 4PI

The total cross section of hadron photoproduction on C, Cu and Pb nuclei is measured for six energy values in the range *£nergy in GeV

12-30 GeV. The obtained cross-section values for C and Cu nuclei have a weak energy dependence at high energies (above 20 GeV). The cross section for the Pb nucleus is somewhat higher in comparison with that expected, and energy dependence

is not observed. The A -dependence of the effective number of hadrons agrees with VDM predictions.

C

Fig. 3. Energy dependence of Aeff/A for C, Cu, Pb nuclei For comparison the data of DESY and SLAC-UCSB, and also the theoretical curves, corresponding to VDM and to the case when the photon is ~20% of the time in a “pure” state, with- out shadowing, a, DESY; c, SLAC-UCSB; x , Serpukhov;

3 , Serpukhov [4]; VDM; 0.8 VDM + 0.2 pointlike

interaction; general VDM.

Table 2 Value of A cff for nuclei C, Cu, Pb for different energies of y- quanta. Only statistical errors arc given.

7-quanta energy (CeV)

ta c

64 Cu :o7 pb

12.6-15.0 0.79 i 0.04 0.77 ± 0.04 0.73 s 0.05 15.0-17.7 0.81 ±0.04 0.72 s 0.05 0.75 s 0.06 17.7-21.0 0.87*0.4 0.80 s 0.05 0.85 s 0.7 21.0-24.6 0.80 s 0.05 0.74 s 0.07 0.72 ±0.08

24.6-27.9 0.79 s 0.05 0.69 s 0.05 0.79 s 0.09 27.9-30.0 0.71 s0.05 0.68 ±0.07 0.75 ±0.13

^eff 0,(7. A)

A Za

t(7, p) + (A - Z) o

t (y, n)

where

0,(7. p) = (98.7 ± 3.6) + (65 ± 10)£

0,(7, n) = o,(7, P)~ (18.3 ±6.1 )E~ U2 »b.

Table l Hadron photoproduction cross sections (in ub) for C, Cu, Pb

nuclei for different energies of rquanta. Only statistical errors are given.

T-quanta energy (GeV)

12 C44 Cu :o7 pb

12.6-15.0 1084 ±48 5600 s 240 17140 s 1170

15.0-17.7 1100 ±43 5200 ±310 17480 s 1140

17.7-21.0 U”5 s 34 5740 s 340 19680 s 1720

21.0-24.6 1058 ±53 5220 ±460 16400 s 1720

24.6-27.9 1047 s 55 4870 s 350 17920 s 1920

27.9-30.0 930 ±66 4730 s 510 16840 ; 2810

PO«M N3S-418

'REV. 7-1 4.841 OSC OMM-N BS-DC

U.S. DEPARTMENT OF COMMERCE national bureau of standards PHOTONUCLEAR DATA SHEET 303
RE,r

' R. Frey, A. Richter, A. Schwierczinski , E. Spamer, 0. Titze,

and W. Knupfer

Phys. Lett. 74B , 45 (1973)

ELEM. SYM.

Pb

A

208

Z

82

METHOD REF. NO.

78 Fr 5 rs

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ ABX 6- 8 D 50,64 MAG-D DST

-

High-resolution inelastic electron scattering (FWHM * 33 keV t w ith 50 MeV and 63.5 MeV electrons on 208 Pb has been used to study magnetic excitations between £x = 6 MeV .r.d S MeV. Angular distributions were analyzed in terms of

the DWBA with RPA wave functions. Eighty" = 2' states car:: :?.i a total strength S£tM2) T * 8500hR fm2 have been

found. The strong fragmentation is in qualitative agreement theoretical predictions.

Fig. 2. Angular distributions for four states withy" = 2".

Fig. 3. Comparison between experimentally determined and

theoretically predicted M2 strengths.

form N3S-418

:R EV. 7*1 4.841 OSC OMM-N BS-OC

u.s. department of commerce national SUREAOOF stanoaros PHOTOHUCLEAR DATA SHEET 304
REF- W. Knupfer, Phys. Lett. 77B, 367 (1978) EL EM. SVM.

Pb 208 82

METHOD REF. NO.

78 Kn 7 rs

REACTION result EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ RLY 7-9 D 24-64 MAG-D nsT

M2 LEVELS

location of the M2 giant resonance in 28

Si. 90 Zr and 208 Pb. predicted within the framework of the MSI-RPA par- -hole model, has been confirmed by high-resolution inelastic electron scattering (£x » 44/T ,/3 MeV). The fragmented

"*l - 'irength distribution can only be described assuming a mass-dependent quenching of the intrinsic gs factor. This has the

••'.auence that the long sought Ml strength is much reduced in heavy nuclei, an effect which is supported experimentally.

Excitation Energy /MeV

Fig. 1. The left part shows selected (e, e) spectra on

23

Si, 90Zr and 208 Pb at various energies but all at 6 = 165". The 2“ states are marked by arrows. The right part displays the model prediction for the M2 strength.

(over)

form N3S-418

(P EV. 7-1 4-«4 ) USC OMM-NBS-OC

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 305

J.W. Knowles, A.M. Khan, W.F. Mills

' Can. J. Phys. 56, 1021 (1978) EL EM. SYM. A

Pb 208 82

method REF. NO.

78 Kn 14 ill. REACTION RESULT EXCITATION energy

SOURCE detector

angle

TYPE RANGE TYPE RANGE

G,G RLX 5-9 D 4-9 SCD-D DST

(5. 2-8. 3) (4. 7-8. 3)

The scattering of gamma radiation from different isotopic mixtures of lead has been measured

between 4.7 and 8.3 MeV with a variable energy beam with 175 keV resolution obtained by Compton scattering (n.y) radiation of nickel from a curved aluminum plate. The elastically scattered radiation was detected with a 12.5 cm diameter. 12.5 cm long Nal(Tl) and with 27 or 49 cm1 GefLi) detectors located at scattering angles of 135* and 90°. respectively. Relative

scattering measurements from targets of natural lead, radio-lead, and lead enriched in 201 Pb show

that the most prominent peaks of natural lead are in ,M Pb at 7332.6 * 1.3, 7087.7 * 4.6. 7064.4 *

3.5. 6721.0 £ 1.8. 5507.6 £ 1.8. 5292.6 £ 3.3, 4836.5 £ 4.6keV. Measurements of resonant

scattering and resonant self-absorption of the more intense scattered radiations provide information on level widths.

La diffusion des rayonsgamma par different! melanges d'isotopes de plomb a ete mesuree.

entre 4.7 et 8.3 MeV, en utilisant un faisceau d'energie variable ayant une resolution de 175 keV,

foumi par diffusion Compton (n.y) d*un rayonnement du nickel sur une plaque d’aluminium

courbee. Le rayonnement diffuse elastiquement etait observe au moyen d’un compteur Nal(Tl) de 12.5 cm de diametre et 12.5 cm de longueur, et de detecteurs GefLi) de 27 ou 49 cm3 places a

des angles de diffusion de 135° et 90° respectivement. Les mesures relatives de diffusion par des

cibles de plomb nature), de radio-plomb et de plomb enrichi en 20, Pb montrent que les pics les plus imponants du plomb naturel proviennent de :o*Pb et sont situes a 7332.6 £ 1.3, 7087.7 £ 4.6 7064.4 £ 3.5, 6721.0 £ 1.8, 5507.6 £ 1.8, 5292.6 £ 3.3. 4836.5 £ 4.6 keV. Des mesures de diffusion resonnantes et d' absorption resonnante des rayonnements diffuses les plus intenses foumissent

des indications sur la largeur des niveaux.

Can. ;. Ptiys., 54. 1021 0978) [Traduit par le journal]

Table 3. Resonance scattering and self-absorption in :o *Pb, 207 Pb, and :04 Pb with a Nal(Tl) detector

Isotope (MeV)

s*°

(eV) 5V 1

’ [Nal]° (cVj /V fV l

> [Naif

SJ" [Nal] (90-)e (eV)

J0.pb 7.34 122.0r2.1 98. 8 ±2.

7

0.27 + 0.02 0.22 ±0.03 72.1 + 2.0 7.07 116.1-5.4 101.3x6.1 0.29x0.05 0. 19 + 0.05 73. 9 ±4.

4

5.51 70.0x3.6 39.1+4.2 0.22-0.04 0 . 1 8 ± 0 . 07 28.5x6.0

£, Se V2 ’ [Nal] Ssa> [Nal] (90-') Isotope (MeV) (eV) (eV) fV2

’ [Nal] (eV)

I07 pb 5.62 22.

1

± 2.3 42.0±7.

1

0.36-0. 17 38.6+12

£i S,,J

> [Nal] Isotope (MeV) (eV) (eV) Pa Pa131 [Nal]

lO.pb 7.96 120.4+5.9 122.2 + 6.4 0.37±0.u4 0.36 + 0.05

7.55 89.4+8.2 88.4±8.6 0.41 +0.09 0.40±0. 10

•For these measurements only the standard errors based on the statistical count are given. •For these results, obtained from ana!>sis of the measurements the limits of uncertainty include the statistical errors and uncertainties caused by the isotopic spectral separation outlined in Sect. 3. They also include, below 7.34 MeV, the uncertainties caused by lack of knowledge of PntZi of :07 Pb. To obtain absolute limits of uncertainty the z 2'Z systematic uncertainty in the determination offt and Ds/(3o must be included.

'Integrated scattering factors at 90° are obtained from the corresponding factors at 133°. column 4, by multiplying by the appropriate f% factors for dipole radiation given in Table 1.

- OVER

ronu M8S-41S WIV. 7-1 4.641 UICOMIANIMC PHOTONUCLEAR DATA SHEET 307

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
Table 4. Resonance total widths f, of J0 *Pb

Present measurements

Quadrupole Dipole Other measurements

<7i = 5 C( — 3 Dipole Ci = 3

[Ce(Li)]® w r,« r«* r?-e iY® iy-« r/ r,*-* £ (keV) (eV) (cV) (eV) (eV) (eV) (eV) (eV) (eV)

7332. 6± 1.3 72.1±2.0 — 42 ± 1 26 + 35 -12

38 7037.7 + 4.6 29.9 + 6.6 9 + 2 15 + 3 16 14 16+3

7064. 4±3.

5

45.4 + 5.9 13 ±2 24+3 31 29 18±3 29 + 3 6721. 0± 1.3 26.3±6.6 7±2 13 ±3 15 5525.3+3.4 23.8±7.3 5±2

(5±2)»

10 + 3 (8±2)»

5507. 6± 1.8 43.1 + 8.3 10±2 18 + 3 23

5292. 6±3.

3

17.9±4.7 4± 1 7 + 2 8.6

4836. 5±4.

6

16.4±5.5 2± 1 6± 2 5.1 6.3

‘For these measurements the limits of uncertainty include statistical errors and the uncertainty of the reference scattering factor 5m/ 1 ’ — 72.1 z 2.0 (above). To obtain absolute limits of uncertainty see footnote. Table 3. ‘Scattering data. ‘References J and 12. ‘Reference 6. ‘Reference 12. ‘Transmission data, ref. 7. •Reference 8. •Effective resonance width for the 5525.2 ± 2.4 IteV r-ray assuming dipole or quadrupole transitions to the ground state of J0, Pb.

308
REF. A. Lepretre, H. Beil, R. Bergere, P. Carlos, J. Fagot,

A. Veyssiere, J. Ahrens, P. Axel, and 0. Kneissl

Phys. Lett. 79B, 43 (1978)

EL EM. SYM.

Pb 208 82

methoo

78 Le 5 rs

REACTION result EXCITATION SOURCE oetector

angle ENERGY TYPE RANGE TYPE RANGE

G, XN ABX 25-106 D 25-106 MOD—

I

4PI

The xn) cross sections of Pb have been measured above the giant dipole resonance region up to 106 Me\ with a

quasi-monochromatic photon beam obtained by the annihilation in flight of monochromatic positrons. The total cross

Action decreases linearly with energy from 20 mb at 35 MeV to 12 mb at 106 MeV. The integrated cross section up to

140 MeV amounts to (1.80 ± 0.2) classical dipole sums.

form N3S-418

<R £ V . 7-1 4-04) USC OMM-NBS-OC

over

u.s. oepartmentof commerce

NATIONAL BUREAU OP STANOAROS PHOTONUCLEAR DATA SHEET 309
Fig. 1. Measured ^ | = Zx= | o(y, xn) » ot values for Pb. The

average = Ijt=;<J<r xr>) results, taken from fie. 2 and

represented by a dotted line, are also given for comparison.

310
ref. j. Lichtenstadt, J. Heisenberg, C-N. Papanicolas, C-P. Sargent

A.N. Courtemanche and J.S. McCarthy

Phys. Rev. Lett. 40 , 1127 (1978)

EL EM. SYM. A z

METHOD

Pb

REF. NO.

208 82

78 Li 4 rs

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,E/ ABX 5- 7 D 50-335 MAG-D DST

States at 6.42-, 6.75-, and 7.06- MeV excitation have been observed in electron scattering on 208Pb. The transverse character of the excitation cross section has been established. The states have been interpreted as the and the t(A11/s

* single-particle hole excitations of the 208Pb ground state, on die basis of the measured

momentum-transfer dependence and the magnitude of the cross section.

Ml2 ,M14 TRANSITIONS

FIG. 2. Experimental cross section for the 4.90-MeV 10* state, and the 6.42- and 7.06-MeV 12* states. The

open data points are cross sections measured at 160* multiplied by 1.5 to compensate for the different scattering

angle (as discussed in text). Curves are the theoretical calculations.

form N3S-418

(R ev. 7-1 4-641 use OMM*N BS-OC

u.s. departmentof commerce

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 311
ref. S. Raman, M. Mlzumoto, G.G. Slaughter, and R.L. Mack! In Phys. Rev. Lett. 40, 1306 (1973)

ELEM. SYM.

Pb 208 82

METHOD

78 Ra 2 rs

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE N,G LFT "4 1 OO O1 o SCD-D UNK

Thirty-six high-energy, primary E2 transitions to the 208Pb ground state have been

identified and their radiation widths measured in a study of the reaction M7Pb(*,-y). The

measured E2 widths in the excitation energy region between 7.37 and 8.17 MeV are compared with those expected from the rising tails of giant quadrupole resonances located

at 8.9 and 10.9 MeV.

NEUTRON ENERGY (kev) FIG. 3. Yield ratios showing clear separation into two groups leading to </* assignments for the resonances. Ratios with error bars greater than 25% and 50% for J = l and «/* * 2* resonances, respectively,

have been omitted for clarity. The shaded regions

(eye-guides) denote unweighted averages.

FIG. 4. Su mmary of E

2

widths for individual states

in 208Pb. The expected widths from the tails of the giant quadrupole resonances at 10.95 and 8.90 MeV

were calculated with an experimentally determined

average level spacing of 5 keV for 2* neutron resonances;- -The integrated strengths discussed in the- text are more meaningful because the actual widths should

exhibit fluctuations.

form N3S-418

IREV. 7-I4-84) USC OMM-N 0S-DC

over

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 312
TABLE L Total and ground-state radiation widths of

2* resonances in 308Pb.

/ lkeV» r/

tmeVi

r

*

1 >o

InieVi is

(keV> r/i meV i

r

*

hueVi

.-0* 145 ’ 13 2 (360 35) 86 V 18 13

10 l« 137 4 30 3 360 75 hi V 36 14

le 1* 252 i33 J (373.501 138 II 54 31

i:*» -wi 181 7 <14 (388.85) 83 13 15 12

32.9" 42 2 5 2 333.33 <40 <38

is 40 95 J 35 V (333.43) 3IO <50

62.* 1 IIS 4 13

» 350.78 <64 <40

6' »0 106 i

31 14 368.50 440 so 180 hij 6S.54 104 i

36 14 378.50 1340 Sit 100 SO

$5 05 186 j 35 S 383.40 601 28 130 40

a- T6 65 5 31 14 305.80 396 33 <40

41 46 4 <13 401 60 330 M <80

(1 13.101 310 s <15 403.40 <100 % <60

13*66 <340* <I30C (411.60) 390 40 <80

1 1 56 40 1 IS5 .5 9 8 (410 50) 343 25 50 40

130 so <30 <13 430.60 <130 <70

1140 03) 113 5 15 V 446.30 <100 <60

l?3 10 1 17 V 37 14 453 00 1090 So 330 too

( 1 5s SO) 103 <15 536 60 1380 70 310 70 (170 55) 31 .5 16 9 530 00 1100 ftf) 310 SO ro.o- 55 m <13 548.60 1180 70 300 Sit 181 18 <500' <350‘ 643 40 3700 400 560 2SO

iio'o:i 52 5 13 7 686.50 1590 180 360 VO

330.35 <16 <0 707.40 3900 4(HI 150 I'm

I--5 .89

1

83 8 <14 744 80 460 III! 180 140 340 -> 83 9 37 14 780.40 3650 JIO 510 140

I343.a5

)

2<K) Sit 29 :j 803 00 940 ISO 300 120

240 49 353 31 00 hit

‘Resonance energies, based on absolute neutron time

of flight, are accurate to ± 0.1%. A parenthesis around

an £„ value Implies that die 2* assignment for this res- onance Is most probable but not certain beyond reasonable doubt. The 2* assignments for those resonances

with quoted upper limits for the widths come from

transmission and scattering measurements (Ref. 5).

b Total radiation width (T

y

) and ground-state radiation width (ry#). hi our notation, 145 2 = 145 ± 2, etc. The

ground- state widths have been corrected for angular

distribution effects.

e Masked by nearby strong J = 1 resonances. Values

not shown in Fig. 4, and not included in the PorterThoroas distribution analysis.

313
*ir.

METHOD

R. Van de Vyver, J. Devos, H. Ferdinande, R. E. Van Camp

Z. Physik A284 , 91 (1978)

Carchon and EL CM. SYM. A Z

Pb

ner. no.

208 82

78 Va 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPf RANGE

G,N ABX 8- 13 C 8- 13 BF3-I 4PI

The total photoneutron cross section Of 208 Pb was measured between 8 and 13 MeV using

the bremsstrahlung photon facility from a 35 MeV linac. Considerable resonance structure was observed in the cross section, of which the peak around 9 MeV, as well as the structure around 10.8 MeV may be due to E2 excitations.

energy ; the structure marked with an arrow is discussed in the text. The curve labeled L is determined by the Lorentz-fit parameters, as taken from the Saday-experimCnt [5]

5 Veyssiere, A., Beil, H., Bergere, R., Carlos, P.,

Lepretre, A.: Nucl . Phys. A159, 561 (1970)

form NSS-411

IREV. M4.MI

UJCOMM-NIMC PHOTONUCLEAR DATA SHEET 314

U.S. OEAARTMENTOF COMMERCE

NATIONAL IUKIAuOF STANOAROS
ref. K. Sh. Egiyan

Yad. Fiz. 30, 890 (1979)

Sov. J. NucT. Phys. 30, 461 (1979)

CLEM. SYM. A

Pb 208 82

METHOO REF. MO. 79 Eg hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYRE RANGE TYRE RANGE

G,XP RLY 8-250 C 130,250 MAG-D DST

Experimental dau »re presented on the inclusive photoproduction of protons in the nuclei 1!C, MMg, uCu. "*Sn, and ”*Pb irradiated by btemsstrahlung with maximum energies 0.13 and 0.23 GeV. The

regions of angles 30-90’ and of photoproton momenta 0.24-0.48 GeV/c were studied. PACS numbers: 23.20. 4- y

10 * F

|

10' r

J

-mV

W-

/<r

. • *. i i

*

i

• i

: r

A ~P*‘

i*n i » i r 1

• 1 M • M 1- rA—,r :

% b ^.c

.

:

a

-

oAOM . S M* * | ****!•

“ •

•4*1 • ( •t*

1

.

•

Vi1 «.

a

N. *

t

9

9 l

i

fl

1 ‘ 1 - » * 1 ’ •

.L t 1 i 1 SO 90 to SO 90

J. deq

10 SO 90

FIG. 2. Relative yields of photoprotons as a function of emission angle; experimental points: O, • —for 0.29 GeV/c;

A, a

0.34 GeV/c; 3, —0.40 GeV/c. The hollow points are

for £,^"0.25 GeV and the solid points for EJjm,*0.13 GeV: a_for“C, b—for °Cu, c —for 2M pb.

FIG. 3. Momentum spectra of protons. The experimental

points are as follows: O and •—for llC, i—for °Cu, O —for

20*Pb. The hollow points are for £rB-1 = 0.25 GeV and the solid points are for 3 - 13 GeV; a—for 3, = 30\ b—for 3,= 60*. c—for 3,* 90*. The lines have been drawn through the experi- mental points by the method of least squares.

TABLE n. Values of the exponent n in the A* dependence of the proton yield in reactions (2) and (3).

G*V t,-*uC.V

»». G«V/e Op. G.V/C

OJf 0.34 0.4* 039 0.34

3n

6090

1. *.04

1.02*0.03

1.17*0.04 1.17*0.02

1.11x0.03

IJDxiuC

1.22x0.u3

l.24*0.Uo

0.39*0.1 >8 0.62x0.06

(over)

foam N8S-41S m(V. 7.1*441 USCOMM-NSS-OC PHOTONUCLEAR DATA SHEET 315

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAnOAROS
uniu

FIG. S. A-dependence of the photoproton yield In reactions (2) and (3). Experimental points for *0.25 GeV: circles

Pp m 0.29 GeV/c; triangles— 0.34 GeV/c, squares—p,* 0.40 GeV/c; half-open symbols—for 3^*30*, open symbols

* 60*, solid symbols—0, » 90*. for 5,^= 0.13 GeV: C

pp 0.29 GeV/e, 3,»30*; —p,= 0.34 GeV/c. 3,-30*. The lines have been drawn through the experimental points by the method

of least squares.

316
... R.J. Holt, H.L. Jackson, R.m. Laszewski, J.R. Specht

‘ Phys. Rev. C20, 93 (19/9)

Card l of 2

EL CM. SYM.

Pb *08 82

METHOD REF. NO.

79 Ho 1 ng

REACTION RESULT excitation

ENERGY

SOURCE oetector

angle

TV*f RANGE TYPE RANGE

$ G,N ABX 7-11 c a-n TUF-0 DST

The photoneutron cross section of ' 0, Pb was observed using a very high resolution time-ot-flight spectrometer. The cross sections were observed in the photoneutron energy range lb to 1000 keV and at reaction angles of 90" and 135*. The deduced ground-state radiative widths were calibrated to the well- known ; H(y,n)‘H reaction cross section. The 7.99-MeV resonance, previously believed to be an Vf l excitation, is shown to be an £1 resonance. Current progress in the search for the collective .Vf 1 resonance

in - 0ll Pb is reviewed. In addition, recent theoretical predictions of the properties of the giant .Vf 1 resonance

are reviewed. Finally, the present high resolution observations in conjunction with previous photoneutron

polarization measurements were employed in order to deduce the s-d - wave admixtures for eight £1

excitations.

POL, NUNPOL N, LFT, J-PI

NUCLEAR REACTIONS 7<*®Pb(y ,n l’ 37 Pb, £=le = 7.4— *3.4 MeV, observed tr(0), 9»90°, 133’; deduced rrt , ./

FIG. 10. The high- resolution photoneutron spectrum above S MeV. The arrows indicate those regions where significant nonzero (Y,n) polarizations were observed. Th- uppermost points represent the spectra for the polarization measurement and are compared with the high- resolution spectrum.

TABLE I. R- matrix parameters for the anahsis . >f -h.- 600-keV region in the :o8 Pb(y, n a r

07 Ph reaction.

E7 (MeV) r>

(eV) h

r„, (ke Vi

7.9731 £1 5.5 0 0.20 7.9828 £1 8.9 0 0.04 7.9838 £2 0.4 1 0.14 (over)

FORM N8S-41I (MV.

USCOMM-NSS-OC PHOTONUCLEAR DATA SHEET 317

U.S. OERARTMENTOF COMMERCE

NATIONAL BURCAUOF STANOAROS
• <?

Ey (MeV)

FIG. 3. Cross sections for the :o, Pb(V ,ni))*

,7 Pb reaction it 90' and 13V and in the vicinity of the GOO- and GlO-keV

resonances. The solid curve represents the multilevel un.tlvsis when the two resonances are £1 excitations, while the dashed curve is the result when the GlO-keV resonance is issumed to be an Ml excitation.

318
R.J. Holt, H.E.

Phys. Rev. C20,

Jackson, R.M. Laszewski, J.R. bpecht

93 (1979)

Card 2 of 2

EL EM. SYM.

Pb

A 1

208

z

82

METHOD REF. NO. 79 Ho 1 hg

SOURCE OETECTOR

REACTION RESULT ENERGY TYPE PANG* T Y PC RANGE

ANGLE

TABLE n. Results of the present high-resolution photoneutron experiment.

ru »i (keV) Ey

(Me VI R

o-i OOVo-t 135 i r

•= r r„ /

i e Vi t r\_

/ 0 leV**

992 3.367 1.3 *0.12 r 1 5.15 3 7 9*5 3.360 1.4 ±0.13 1.2* 2.86 1.91. 1.15 971 3.346 1.3 =0.2 1.2* 1.43 1.0, 0.6 966 3.341 0.67 = 0.13

' 1.2* 0.40 0.27,0.16

947 3.322 1.53 = 0.13 l* 1 4.44 3.0 933 3.313 1.06 = 0.13 1.2* 1.35 0.9, 0.3 921 3.295 1.43 =0.24 1,2* 0.41 0.3, 0.2

902. 3.276 1.64 =0.15 r

1 2.83 1.9 391 8.265 0.73 =0.13 1,2* 0.41 0.27.0.16 879 8.253 1.25=0.29 1,2* 0.37 0.25,0.15 349 3.223 1.20 = 0.12 1.2* 2.61 1.7, 1.0 340 3.214 1.67 =0.16 1* 1 6.17 4.1 834 3.208 1.03 = 0.11 1.2* 1.69 1.1, 0.7 330 3.204 0.63 =0.09 1.2* 0.55 0.37, 0.22 313 8.187 1.13 =0.19 1.2* 0.69 0.46,0.23 773 8.147 1.17 = 0.21 o*c 0.33 0.25 731 3.105 1.29 =0.13 1" 1 3.04 2.0 721 3.094 1.40 *0.18 1.2* 0.85 0.57,0.34 694 8.067 1.44 = 0.12 1.2* 3.92 3.1, 1.9 647 8.020 1.20 =0.06 1" J 10.37 6.9 638 8.011 1.16=0.21 ' 0.20 0.13 630 8.003 1.51 = 0.1S 1. 2* 0.40 0.27,0.16 610 7.983 1.37 =0.03 1* 13.39 3.9 600 7.973

' 1.46 =0.09 r

' 7.43 5.5 594 7.967 0.72 =0.09 1,2* 0.37 0.25,0.15

548 7.921 0.73 =0.04 1,2* 3.69 2.5, 1.5 543 7.916 0.87 =0.08 2* ' 0.94 0.38 537 7.910 1.23=0.06 i* 1 9.17 6.1 499 7.871 1.14 =0.1.7 1.2* 0.81 0.54,0.32 488 7.360 1.03 =0.09 1.2 1.91 1.3, 0.3 481 7.353 0.91 =0.0' 1.2* 1.31 1.2, 0.7 449 7.321 1.2 =0.2 1.2* 4.0 2.6, 1.6 425 7.797 1.3 -0.13 1.2* 1.3 0.87,0.52 419 7.791 1.9 =0.2 1* " 0.3 0.53 332 7.704 1.2 =0.15 1* ’ 0.73 0.50

313.7 7.685 1.15 =0.05 1* J 9.6 6.4 295 7.666 0.99 = 0.1 l

’ 0.57 0.40 281.0 7.652 1.8 =0.2 1.2* 0.43 0.29,0.17

253.6 7. 625 0.0': - 0 10 1 * 1 19.6 13.1 246 7.617 0.67 = 0."' 1,2* 1.64 1.1, 0.66 179 7.550 1.51 = 0.1.5 1 * ' 10.9 7.3 154.8 7.526 1.72 0.17 r

h 0.69 0.46

129.6 7.500 1.03 = 0.1O ! ’ ' 1.14 0.76

125.3 7.485 1.73 =0.1* i

* ’ 2.1 1.4 114.1 7.494 1.49 = 0.15 i* 1.7 l.l 101.3 7.472 1.61 Oil. 1.2* 0.23 0.15, 0.09

89.6 7.460 1.97 0.20 1* ' 2.0 1.3 47.7 7.413 0.53 = 0 .ii.* J 0.06 0.02

40.7 7.411 0.92 O o'

i

r" 3.2 3.5 37.2 7.407 0.67 : 0.u7 i*

' 0.96 0.64

30.1 7.400 1.5 .0.15 1.2* 0.3 0.2, 0.12

16.6 7.307 1.5 .0 15 i T 0.02 0.01

1 Assignments are based on phoumom ron l.i r • / mn observations, Refs. « and 7.

b Assignments are taken from lids. >, I". m«l :*. c Assignments are from Ret. 30. (over)

form NSS*418

IACV. 7-14.44) USCOMM*NBS4)C PHOTONUCLEAR DATA SHEET 319

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
TABLE III. Comparison of photoneutron experiments with the present work. The values in parentheses have been renormalized to the strength of ;he 40.7-ke V resonance determined from the present work.

En Argonne Livermore Toronto

(keV) R r

To

< eV) R rr« R r

T0 'eV9

30.1 1.5 = 0.13 0.2 1.41 = 0.2 0.2 1.10=0.17 0.4 37.2 0.67 ±0. 07 0.64 0.64=0.09 0.36

-

1 0.74 =0.14 1.0 40.7 0.92 ±0.09 3.5 l

b 4.2 c (3.3) 0.33 =0.07 4.2 c (3.5) 89.6 1.97 ±0.20 1.3 1.25 =0.09 0.9 114.1 1.49±0.15 1.1 1.54=0.22 1.4 1.23 = 0.14 0.9 179 1.51 ±0.15 7.3 1.53=0.22 11.0 1.37 = 0.05 11.3 246

253.6

0.67 ±0.07

0.98 ±0.10

°- 661 13 8 13.1 j 13,8 1.10=0.13 15.3 l b 17.7

295 0.99±0.10 0.4 1.09=0.16 1.7 313.7 1.15±0.05 6.4 1.12 ±0.16 6.7 1.10 = 0.07 7.0 600

610

1.46 ±0.09

1.57 ±0.08

5.5)

1 144

3.9 l 1. 81 ±0.23 12.3 1.60 =0.17 21.2 647 1.20 ±0.06 6.9 1.26=0.13 5.5 1.24 =0.22 6.7 834 1.03±0.11 i- 1

! 840 1.67 = 0.16 4.1( 6.9 1.49=0.21 6.3 1.53 -t 0.37 • n

i ,*J 849 1.20=0.12 1.7'

Total 62.84 64.46(53.7) 30. S( 67.3)

* This value was obtained by assuming that this resonance is a dipole excitation.

b The angular distributions were normalized to unity for these resonances in Refs.- 1 and 5.

c The values of r

j

, j were normalized to the strength of the 40.7-keV resonance in Refs. 1 and S.

TABLE IV. Comparison of present ground-state radiation widths with those of the fast-neutron capture method.

(keV) Er (MeV) J*

Argonne ry# (eV) Oak Ridge r7( (eV)

16.6 7.397 1* 0.01 0.07

30.1 7.410 1.2* 0.2 0.64

37.2 7.417 1* 0.64 0.76 40.7 7.421 1' 3.5 5.07 47.7 7.418 2* 0.02 0.035

89.6 7.470 1* 1.3 2.01 101.3

' 7.431 1,2* 0.15 0.32

114.1 7.494 1* 1.1 1.55 125.8 7.496 1* 1.4 2.59

129.6 7.510 1* 0.76 0.95 154.3 7.535 1* 0.46 0.66 179 7.559 1* 7.3 15.8 253.6 7.625 1" 13.1 21.1 295 7.666 1' 0.40 0.71 313.7 7.685 1‘ 6.4 10.1 332 7.704 1* 0.50 1.19 419 7.791 l” 0.53 0.33 488 7.860 1.2* 1.3 1.6 537 7.910 1‘ 6.1 7.2 543 7.916 2* 0.38 0.2 600 7.973 1' 5.5 9.9 610 7.983 1" 8.9 14.0 638 8.011 2* 0.13 0.56 647 8.020 1" 6.9 9.3 694 8.067 1,2* 3.1 3.2 721 8.094 1,2* 0.57 1.1 731 8.105 1* 2.0 3.1 773 8.147 2* 0.25 0.31 840 8.214 1" 4.1 7.0 902 8.276 1' 1.9 4.4 947 8.322 1' 3.0 5.4 992 3.367 1* 3.7 5.6 Sr* 85.6 137.2

320
REF.

METHOD

R.M. Laszewskl and P. Axel

Phys. Rev. C 19, 342 (1979)

EL EM. SYM. A

I Z

Pb

REF. NO.

208 82

79 La 1 EXCITATION SOURCE DETECTOR

REACTION RESULT ANGLE ENERGY TYPE RANGE TYPE RANGE

G,G ABX 4* 1 OO D 4-8 NAI-D 135

(4. 5-7. 4) 4. 5-7.

5

hi

Average elastic photon scattering cross sections were measured for ”*Di, 204Pb, “’Pb, 2)4Pb, T1 and Ifg at

excitation energies between 4.3 MeV and the neutron emission threshold, with an energy resolution in the range between 30 and ISO keV. This resolution was sufficient to determine the strengths of most ot the

strong levels in this energy region for

204Pb; there are concentrations of strength in a few levels near 3.3 and

7 MeV with the sum of 0(£l)r values equal to about 0.84 and 0.63 e

2 fm\ respectively; each of these two groups of levels corresponds to only about 0.63% of the electric dipole sum rule. In the neighboring

isotopes, approximately the same amount of strength is distributed among many more energy levels; although this strength is spread in energy more than it is in

20, Pb, it remains relatively localized.

Ey(MeV)

FIG. 3. 2MPb (enriched to 73% 208 Isotope): experi- mental average elastic photon scattering cross sections. The solid curve Is a low energy extrapolation of the giant dipole resonance Lorentztan. Note that because the large peaks are dominated by very strong levels, the average “cross section” is governed by the tagged photon resolution; nuclear absorption effects distort the relative intensities.

foum N 3 S-418 (REV. 7-14-64) USC OMM-NBS-OC

Ey (MeV)

FIG. 12. Comparison of the measured cross sections

of, respectively, from the top, 20, Pb, :o, Pb, 2MPb, l0*Bl, Tl, and Hg.

PHOTONUCLEAR Dai a oncci 321

over

20MMERCE

r anoa RDS.
1 . TABLE m. Nuclear levels in 24tPb (assuming gT^/T

3).

By (MeV)4 r, <eV) B{El)i (#*£»*>

7.332 44.5 ± 2.9 0022 * 0.021

7.083)

7.063) 25.9*2.1 0.209 * 0.017

6.721 13.0* 1.6 0022*0.015

5.513 21.4* 2.2 0.366 * 0.038

5.293 7.0* 1.4 0035* 0.027

4.842 6.9* 1.4 0074 * 0.035

•References 14, 19-21.

TABLE V. Comparison of measured level widths.

Energy V V V h

(MeV) (eV) (eV) (eV) (eV) (eV)

4 <£42 6.9* 1.4 6.3 5.7 50*

5093 7.0* 1.4 8.6 60

5.513 21.4* 2.2 28 18 - SOS 4.4* lO* 5.6* 6062 80* 1.1* 40

6.721 13.0*1.6 15 13 14* 7

7.0631 25.9*2029 1

30* 13 31«,18±3f

7.083) 14 is) 17«,164 7032 44.5*2.9* 38 42 41*10

•This work. •Reference 14.

e Reference 19. ^Reference 3.

* Reference 10.

1 Reference 21. Reference 11. •Reference 20.

1 Possibly contains the strength of neighboring weaker levels.

1 Reported in Ref. 19 for a level at 5.919 MeV.

TABLE VT. Transition strength comparison at 5.5 anH 7 MeV.

Nucleus

5.0—6.0 MeV

JtTyydEiMeV mb) %

2®*Pb strength

60-

fffyydEiMeV mb)

7.5 MeV

%

2B*Pb strength Bi 10.4 68% 10.7 44% JWPb 150 100% 24.4 100% 2«pb 12.6 83% • • # to«pb 150 104% 200 83%

T1 80 55% 70 32%

Hg 11.6 76% e e •

3 10

1114

19

20

21

P. Axel, K. Min, N. Stein, and D.C. Sutton, Phys. Rev. Lett.

C.P. Swann, Phys. Rev. Lett. 32, 1449 (1974).

C. P. Swann, Nucl . Phys. A201_, 534 (1973).

D. F. Coope, L.E. Cannell, and M.K. Brussel, Phys. Rev. C 1_5, J.W. Knowles, A.M. Khan, and W.F. Mills (to be published).

W. Scholz, H. Bakhra, R. Colie, and A. Li-Scholz, Phys. Rev.

R.J. Sparks, H. Lancman, and C. VanDer Leun, Nucl. Phys. A259

10, 299 (1963).

1877 (1977).

C 9, 1568 (1974).

13 (1976).

222
„ er. J. Lichtenstadt, J. Heisenberg, C.N. Papanicolas, C.P. Sargent,

A.N. Courtemanche, J.S. McCarthy

Phys. Rev. C20, 497 (1979)

CL CM. SYM.

Pb 208 82

METMOO REF. NO.

79 Li 2 egf

REACTION

E,E/

RESULT

ABX

EXCITATION ENERGY

6-7

SOURCE

TVPC RANGE

50-335

oetector

MAG-D

ANGLE

DST

Inelastic electron scattering cross sections for the excited states at 6.43, 6.74, and 7.06 MeV in JMPb were 6.43, 6.74, 7.06 MEV

measured with high resolution. The measurements were done in forward and backward directions covering

- TM " ~

the momentum transfer range of 0.3 < q <2.5 fin -1

. The state at 7.06 MeV was identified as the "i'u/ ‘)u- and the states at 6.74 and 6.43 MeV as the ')u_ I2 _, respectively. The identification was based on four criteria: (a) the agreement between the q dependence of the measured form factor with

that of Hanree-Fock single particle-hole prediction, with no adjustment of radial parameters, (b) the absence of a longitudinal form factor, (c) the relative magnitude of the observed levels, and (d) the excitation energies being close to the single p-h energies. The measured strength of each state was found to be 50% of

the single p-h prediction.

[

NUCLEAR REACTIONS 298Pb(«, e') E = 50—335 MeV; measured <r(£), 9 = 90* 160*. 2#8 Pto deduced, levels J

T = 12* , 14'. DWBA calculation with Hartree

single particle wave functions.

0V I

-Fockl

FIG. 3. Cross section of the level at 7.06 MeV with J’

12”. The dashed and solid lines are single p-h predictions of the <r(i

1 3 /2!i u/ 2 “l ) t2- transition, using Hartree- Fock and Woods-Saxon wave functions, respectively.

The curves presented are the “reduced cross sections"

calculated in DWBA at 160*. The calculation at 90* is almost identical to that at 160*, to the accuracy of the graph.

FIG. 4. Cross sections of the levels at 6.74 and

6.43 MeV, with </ r =14*, 12‘, respectively. The dashed

and solid lines are single p-h predictions of the

y ^7'i5/2f|3/2"*)||-, |j- transitions, using Hartree-Fock and Woods-Saxon wave functions, respectively. For calculational details see text.

form N8S-4U

IRCV. M4.MI

OSCQMM-NIS-OC

lc\'*r)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS PHOTONUCLEAR DATA SHEET 323
V

I TABLE n. Experimental cross sections measured for the excited states at 6.43, 6.74, and

7.06 MeV. Errors are the statistical errors only. The number following £ Is the power of 10 which multiplies the preceding number

E (MeV) %

6.43 MeV

(mb/sr) %

6.74 MeV

(mb/sr) %

7.06 MeV

(mb/sr) %

90*

201.53 0.22 2.15E-6 15.5 213.85 0.21 5.44E-7 97 3.59E-6 22

236.85 0.15 1.60E-6 13.5 4.06E-7 54 2.58E-6 11 255.96 0.13 1.39E-6 12.5 1.26E-6 13.5 3.72E-6 7.1 273.97 0.18 9.64E-7 7.3 1.01E-6 7.6 3.46E-6 3.4 298.59 0.17 4.36E-7 14 1.30E-6 5.6 1.93E-6 5.9 335.40 0.22 2.03£-7 30 1.04E-6 12 6.96E-7 12

160*

140.69 0.11 2.56E-7 40 1.16E-7 74 8.23E-7 20

149.97 0.22 3.30E-7 21 1.84E-7 28 1.70E-6 8.9 165.29 0.12 6.61E-7 12 3.35E-7 23 2.36E-6 5.8 180.70 0.25 8.71E-7 8.2 7.90E-7 9.0 - 2.89E-6 4.3 195.27 0.26 5.74E-7 9.4 7.85E-7 7.6 2.43E-6 4.0 210.99 0.10 3.39E-7 13.5 9.91E-7 6.9 1.37 £-6 6.0 225.12 0.17 1.53E-7 22 9.20E-7 6.8 9.64£-7 6.6 240.07 0.22 '6.70E-8 24 5.33E-7 7.5 2.17E-7 14.5 255.12 0.22 1.42E-8 59 9.34E-8 19 5.09E-8 27

324
ner. A. M. Nathan, R. Starr, R. M. Laszewki,.P. Axel

Phys. Rev. Lett. 42, 221 (1979)

CL CM. SYM. A

Pb 208 82

METHOD REF. NO. 79Nal hg

REACTION RESULT EXCITATION ENEROY

SOURCE OETECTOR

ANGLE TVt| RANG! TYPE RANGE

$ G,G JPI 5-8 C 14 NAI-D DST

(5.51-7.33)

The parities of four bound J= 1 levels in 208 Pb that are strongly excited by y rays were POL PHOTONS, IN, OUT

determined by observing the elastic scattering of plane- polarized photons. The levels at 5.51, 7.06, 7.08, and 7.33 MeV are excited by electric dipole radiation, and therefore have negative parity. The 1* assignment for the 7.06-MeV level is of particular signifi- cance because this level had previously been thought to contain about 36% of the A/1 strength in M8Pb.

FIG. 2. A summary of the vertical-to-horizontal ratios for vertical polarization (£,,), horizontal polarization (£a), and no polarization (0). The solid lines represent the expected results for an energy-independent

partial polarization P=0.28. The dashed line indicates the expected result for unresolved strengths that are 60% Ml and 40% £1. The results show that all of the strong levels must be excited by El.

foam NSS-41S mtV. 7-1 4.441 USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 325

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Co Woodward, G.A. Petersor

PhySo Rev. C20, 2437 (1979)

REF.

METHOD

EL EM. SYM. A

Pb

REF. NO.

208

z

82

79 Wo 4 hq

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

E,E/ SPC 19-26 D 60 MAG-D 180

A search for 2Hai Ml excitations in :o,Pb has been made under conditions of maximum sensitivity by SEARCH FOR Ml EXCIT.

means of 180T scattering of 60 MeV electrons. The results do not show the strength predicted by Speth et ——

al.

[nuclear REACTIONS MIPb(e,e'). £»60 MeV, 9- 180‘, measured <r(E, 180*).]

E (MeV)

FIG. 1. Spectrum of electrons of incident energy 60 MeV scattered through 130“ from :o,Pb in the excitation

interval from 19 to 26 MeV. At 24 MeV the dashed line represents a predicted peak of cross section 180 nb/sr

and the solid line the best fit of a Breit-Wigner peak of

the same width, showing no firm evidence of 2Kui Ml

excitations in this energy range.

fo»M N3S-418

<R EV. 7-1 4* 641 USCOMM-NBS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAUOF STANDARDS PHOTONUCLEAR DATA SHEET 326
T. Chapuran, R. Vodhanel , M.K. Brussel

Phys. Rev. C22, 1420 (1980)

REF. CL CM. SYM. A 2

MCTHOP

Pb 208 82

ref. no.

80 Ch 3 hg

REACTION RESULT EXCITATION SOURCE DETECTOR

ANGLE ENERGY TYPE RANGE TYPE RANGE

G,G SPC 4-8 C 7-11 SCD-D DST

(7-10.37)

Resonant photon scattering from 3*Jirj°,Pb and “*Bi has been measured from 4 MeV to the neutron thresholds using enriched targets, Ge(Li) detectors and bremsstrahlung beams with end-point energies of 7.0, 7.5, 7.6, 8.0, _

8.5, and 10.4 MeV. Energies and values of gT„

1 IT were obtained for many levels not observed in previous photon

experiments. Spins of levels in ”*Pb and OTPb were determined from the angular distributions, and ground-state branching ratios were obtained from self-absorption measurements for seven transitions in 201 Pb. The results are compared with earlier spectroscopic studies and with lower resolution average cross-section measurements. The

spectra of "Pb and “*Bi are discussed in terms of the excitations of the ;o*Pb core. NUCLEAR REACTIONS 20** 29T>2M Pb, 2MBl<y,y) ; enriched targets; resonance

“

fluorescence with 7.0, 7.5, 7.6, S.0, 3.5, and 10.4 MeV bremsstrahlung. Measured Ejt ly at 90* and 127*, and self-absorption; deduced gT^/T, r0 /r,«f.

TABLE HI. M*Pb results. The values for I*, 2/ T have

been extracted assuming J= 1 where not measured (ex- cept J = 2 for the level at 4.085 MeV). The listed uncertainties for r„/ r Include statistical errors only, while those for Ts

2/ T also include the uncertainty in N^E)e(E).

Energy (keV) J r„

2/r(ev) r„/r

4085.2 ±2.0 0.68± 0.15 4841.6 ± 1.0 1 5.0 ±0.8 0.851^5

5292.6 ±2.0 1 5.1 ±0.8 0.781®-]2 5512.2 ±1,0 1 22.3 ±3.4 0.98t£j4 5948.0 ±3.0 1.0 ±0.3

6263.4 ±3.0 2.6 ±0.5

6311.7 ±3.0 3.2 ±0.6

6362.8 ±3.0 1.6 ±0.4

6720.1 ±1.5 1 7.6 ±1.5 1-OOtSui 7063.3 ±1.5 1 15.7 ±2.6 0.98^i?

7082.8± 1.5 1 8.8 ±1.5 1.0* 7243.0 ±4.0 1.7 ±0.6

7277.9 ±4.0 1.7 ±0.6

7332.2 ±1.5 1 26.9 ±4.8 i.oo:^

* See text for discussion.

FIG. 7. Combined results of the self-absorption =»nH scattering measurements for the 4.842 MeV level in

20®Pb. The dashed curves indicate combinations of r„ and T which reproduce the experimental results ; the

solid curves represent the error band for each case. The shaded region contains the values of r0 and T consistent with both experiments, and with the condition r„/r * i.

TABLE IV. 2l,, Pb angular distribution measurements. Listed uncertainties are statistical only.

Energy (MeV) WW)/W(\2T) J

4.085 1.74± 1.10 4.842 0.71± 0.07 1 5.293 0.74± 0.12 1 5.512 0.68± 0.04 1 6.720 0.71± 0.07 1 7.063 0.76±0.05 1 7.083 0.72 ±0.08 1 7.332 0.75± 0.09 1

W{6) W(90*)/lV(l27*)

Dipole 1 + 0.500 i*,(cosS) 0.73 Quadrupole l + 0.357 P,(cos8) + 1.143 Px ( cosfl) 2.28*

*The experimental ratio for quad rupole scattering is reduced to 2.20 by the finite angular acceptance of the detector. rsmi NSS-418 IMV. 7- I 4-541 USCOMM-NtS-OC

(OVER)

PHOTONUCLEAR DATA SHEET 327

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUR EAU OF STAnOARQS
to

t-z

3o

u

2900

f 2000

1500 -

1000 -

500 -

r ^01"^

4.4

»*pb , 2.14 g/em*

8 » I27» 363 mC

E.* 7.0 M«V

r

[r,i> X'.

6.0 6.4 6.8 ENERGY (MeV)

5.6 6.0 6 « 6.8 7.2 7.6 ENERGY (MeV)

FIG. 5. Spectra for 7.0 MeV (upper figure* and 7.5 MeV (lower two figures) bremsstrahlung scattered from enriched

(72.5'vo) :o*Pb targets. ( F), (S), and <D) refer to the full energy, single-, and double-escape peaks, respectively. One

channel corresponds to 1.36 keV in the 7.0 MeV spectrum, and 1.48 keV in the 7.5 MeV spectrum.

328
mtr D. Goutte, J.B. Bellicard, J.M. Cavedon, B. Frois, M. Huet,

Phan Xuan Ho, S. Platchkov, J. Heisenberg, J. Lichtenstadt,

C. N. Papanicolas, I. Sick

Phys. Rev. Lett. 45, 1618 (1980)

METHOD

P. Lecont|t.EM. STM. A

Pb 208

REE. NO.

82

80 Go 2 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE AANGC TV PC RANGE

E,E/ ABX 2 D 52-502 MAG-D DST

(2.615)

Transition charge radius of 7.334±0.0 1 fm.

Transition probability of 6.12xl05e2.f#±2%

BEL 2.615 MEV

The transition charge density for the octupole vibration of 308 Pb has been determined

with an unprecedented accuracy for an inelastic transition. A comparison with some of

the best theoretical calculations shows a persistent discrepancy in the interior of the nucleus which offers a measure of the limitations of the various theoretical approaches considered. PACS numbers: 21.rO.Ky, 25.30.Cg. 27.-S0.rw

10 \

10

*3 10 > '01

EC

-o \ •o'6

10

io

a

id

9

^ 2.615 MeV \

h

» Previous Data —Best Fit

lO

0.5 35

FIG. 1. Experimental cross sections recalculated to an incident energy of 502 MeV. The s-'lid line represents

the best fit obtained with the Fourter-bessel analysis.

Solid circles, new data taken at Saclay. crosses, new

data taken at M.I.T.; open circles, previous data (Refs. 3-5).

FIG. 2. Comparison of experimental transition charge

density of the 3 level at 2.615 MeV in 3,3 Pb with various

theoretical predictions: curve a, from Ref. 15; curve

b from Ref. 13; curve c, from Ref. 12; and curve d, with use of the Migdul interaction. The shaded area in the interior represents the experimental uncertainty

from the previous analysis (Ref. 16). Note that below 7- 4.2 fm, curves a and d are indistinguishable.

FORM M8S-41I

(REV. 7*1 4. #41 USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 329

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOASOS
ref. J, Lichtenstadt, C.N. Papanicolas,

J.S. McCarthy

Phys. Rev. Lett. 44, 858 (1980)

METHOD

C.P. Sargent, J. Heisenberg, EL EM. SYM. A z Pb 208

REF. NO.

82

80 Li 1 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

tvpc range TVPC ft AN GC E,E/ ABX 4-7 D 70-335 MAG-D DST

(4.89-6.10)

Natural-parity high-spin states of (6.10 MeV) and 10* (4.S9, 5.07, and 5.92 MeV)

were observed and identified via inelastic electron scattering. Dominant single-particle—

hole configurations in these excitations were deduced. The measured cross sections In- dicate a reduction of the transverse transition amplitude to 65% of the shell-model pre^

diction, and the absence of an effective charge for the neutron.

4 HI-SPIN, 4. 9-6.1 MEV

q ef , (frrf')

FIG. 1. Reduced (e ,e') cross sections from the excited 12* state at 6.10 MeV, measured at 9Q° and 160*. Solid lines are DWBA calculation of the SPH transition

y(liii/ : , 1« scaled down by 0.65^iec .

FIG. 2. Reduced (e ,e‘) cross sections from the three 10* excited states. Solid lines are DWBA calculations

of the following admixtures: (l) 4.39 MeV: 0.65 00,

-0.58<J3), 0.30(C), and —0.17 (G). (ii) 5.07 MeV: 0.73 00, 0.63(B), -0.02(C), and 0.03(D). (iii) 5.92 MeV:

0.12 00, -0.16(B). -0.07(0, and 0.98(0. Quenching

factors are O.G5^ftee , and 0.92c(ir). <A)=u(2g3/2 , 1 * 13/2 'hi** (B>=*UAj/2 , lA„/;- l) t0 ,; (C)= v(lj jj/j,

5/2 ho** (f)) = f(1* II / J , 1* 13/2 ') 10*.

ro»M N8S.41S MIV. 7- 1 4- *41 use OMM*M6S*Oe PHOTONUCLEAR DATA SHEET 33Q

U.S. DEPARTMENT OF COMMERCE

NATIONAL e UR 1AU OF STANOAROS
ref. K. Ackermann, K. Bangert, U.E.P.

R. Stock, K. Wienhard

Nucl. Phys. A372 , 1 (1981)

METHOO

Berg, G. Junghans, R.K.M. Schneider j CL CM. SYM. A

Pb

REF. NO.

208 82

81 Ac 11 hg

REACTION RESULT

EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE G,G LFT 5-8 C 10 SCD-D DST

-

Abstract: Nuclear resonance P.uorescence measurements on J, Ni with bremsstrahlung and Gc(Li) 7 LEVELS

detectors were performed to search for bound state dipole excitations. Ten levels with ground state decay widths larger than 0.3 eV have been observed in the energy region between 6 and 10 MeV

for which precise excitation energies, spins and lifetimes are reported. The measured transition

probabilities are compared with theoretical estimates of El and Ml strength in 5, Ni. Since the

3 ®Ni(y.*y) cross sections were determined relative to strong transitions in : “'Pb. the results of a

separate :o*Pb<y. y) measurement are also presented.

NUCLEAR REACTIONS 3, Ni(y. y). *°'Pb(y. y). £ < 1 0 MeV ; measured £,. o{0) ; deduced

lifetimes, spins. Enriched targets.

Table I Comparison of ground xtatc decay widths in ;o *Pb

This measurement Chapuran ")

£,(keV) r0

*) (cV) £, (L-V) Tu

*) (eV)

5294 + 3 5.2 ±1.5 5292.6 ±2.0 5.1 ±0.8

5514 + 3 17.7 + 4.8 55 12.2 ±1.0 22.3 ±3.4

6266 ±3 3.0 ± 1.1 6263.4 ±3.0 2.6 ±0.5

6721 ±3 6.9 + 2.0 6720.1 + 1.5 7.6 ±1.5

7064 + 3 16.0±4.4 7063.3 ± 1 .5 1 5.7 ± 2.6

* 7084 + 3 8.0 ±2.3 7082.8 ±1.5 8.8+ 1.5 7333 + 3 26.5 ±7.1 7332.2 ±1.5 26.9 ±4.8 ’

* Used for decay widths calibration.

*) f0.T = I assumed.

b

) Ref. li

).

torm M8S-4I8

IPCV. M4>MI

USCOMM-OC 2«010-P«4

U.S. OEPARTM£NT O c CCmm/pc

NATIONAL BUREAU OS- S T A ^ A

“ « PHOTONUCLEAR DATA SHEET 331
***• K.V. Alanakyan, M.Dzh. Amaryan, R.A.

M.S. Ogandzhanyan, Yu.G. Sharabyan

Nucl . Phys. A367, 429 (1981 )

METHOO

Demirchyan, K.Sh. Egijan, CL EM. SYM. A

Pb

REF. NO.

82

81 A1 8 hg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

angle

TYPE RANGE TYPE RANGE

G.P ABY 8-999 C 999 TEL-D n<JT

-

Abstract: The angular dependences of proton photoproduction from the nuclei

12 C,

6JCu and 20*Pb

irradiated by bremsstrahlung y -quanta with maximum energy 4.5 GeV, both in the cumulative

region (i.e. in the kinematical region in which the production of protons in the collision of y -quanta

of the given energy with the quasi-free nuclear nucleon is forbidden) and in the non-cumulative

region, are investigated. The experimental data obtained are compared with the results of

theoretical calculations of cumulative proton photoproduction according to the following models:

the •quasi-two-body" scaling model, the low-nucleon correlation model, the fluctuon model and the

cluster model.

NUCLEAR REACTIONS C.

JCu, ^Pbiy, p), E =4.5 GeV bremsstrahlung; measured

<7(Ep, 0P); deduced reaction mechanism. Natural target.

999=4.5 GEV

1'p (degieti)

Fig. 5. The same as in fig. 3 for

2n*Pb.

form M8S-4U

<R*V. T.lkMl USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 332

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
REF. Y. Birenbaum, Z. Berant, S. Kahane, A. Wolf, R. Moreh

Nucl . Phys. A369 , 483 (1981)

EL EM. SYM.

Pb 208 82

METHOD REF. NO.

81 Bi 6 hg

EXCITATION SOURCE DETECTOR

REACTION RESULT ENERGY TYPE RANGE TYPE RANGE

ANGLE

G,N RLY 7-11 0 7-12 SCI-D DST

(7.4-11) (7 - 11.4)

a r 1 -G) = iVa

‘3 r

3

2

P

2

tract: Angular distribution, of photoneutrons from the Pb( */. n„) reactions were measured

at II angles around i> = 90° They-source. E = 1 1 .4 MeV. contained discrete lines (J£ ^ ,'0eV) obtained from n-capture and was used in conuinction with a high-resolution J He spectrometer. Strong evidence for an F.2 contribution and for F2-EI and possible El -MI interference was obtained

in both • u Pb and :,"Pb. The result., are compared with calculations using a dircct-semidirect model

which involved an El and isoscalar E2 giant resonances The results indicate that this model could

explain only certain features of the data while most of the other features remain unexplained.

1 NUCLEAR REACTIONS Pbt . ui. E - 7 o 1 1 4 MeV. measured <rt<M for ll = 40°

1 4t)3 Deduced F.2-EI and Ml-l.l interte rence effects.

50 70 90 HO 130 SCATTERING ANGLE (deg)

Fie. 4. Angular distribution of the 262 keV neutron group emitted by the :o*Pb(y. n„) reaction and- resonantly photoexcited by the "<>'2 keV -line of the Fetn. y) reaction.

'r n «i

f ie n Angular distributions ol neutrons Irom

the Pbi y. nl reaction leading to the ground

state in Pb for various incident phoion

energies.

Fig. 9. Measured interference factor l( /: . r/i for the three reactions • :o '

- n"Ph<- „ i ti,. i , r ,rom ra V Tin- ri f0r 333

(OVER)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANOARDS
Ntiiio. The ".olid curves jre c.ilctil.ued usina the DSD model.

334
* e , W. Biesiot, Ph.B. Smith

' Phys. Rev. C24, 808 (1981)

EL CM. SYM.

Pb 208 82

metmoo REF. NO.

81 Bi 7 hg

REACTION RESULT excitation

ENERGY

SOURCE OET ECTOR

angle

TVRf RANGE TYRE RANGE

$ G.MU-T LFT 4-7 D 4-7 NAI-D DST

(4.841-7.064) (4.841-7.064)

Level parameters in “Pb have been determined by means of the resonance gamma-ray absorption technique and measurement of the azimuthal distnbuuon of the elastic scatterins ^

r3dc The 7.1 MeV doublet was found at £, = 7063.5

WaS Pr0dUCed ± 0.2 andm

7083.3

$UitabIy*

Ch0SCn

0.3 keV

Wwith zround Zdt’ l V

± 15 and9 I± U eV- A un“^ native parity assfgnmen:

could be made to both levels, in agreement -.vith other observations. The 4.S4 MeV bound

level has an excitation energy Ex = 4842.2 ± 0.2 keV and is most probably a ]' = | iev.

POL.G, AZMUTH ANG DST

NUCLEAR REACTIONS 34

S!,7 . r )”ci, :o*Pb res. ate..

:cs Pb res. fluor., E — 4.8, 7.1 MeV; measured oi£,Ey

). :oj Pb deduced levels _ r. levels. Enriched lead sample.

TABLE II. Comparison of measured level width and branching ratio for the members of ihe 7.1 MeV doublet in

ro

; /r(7.06 MeV)

(eV) iV/ra.os MeVi

(eV) ivr

(7.06 MeV) rvr

(7.0S MeV)

This work 17.4+ 3.3 9.1 + 1.3 19.5 - 1.7 Sparks et al. (Ref. 5) 18 + 3 Chapuran et al. (Ref. 26) 15.7 + 2.6 8.8 + 1.5 0 98 +

nni 1.0 Laszewski and Axel (Ref. 25) 25.9 + 2 I Knowles et al. [Ref. 14(b)] 24 + 3 15 + 3 Swann (Ref. 7) 31 + 3 17 +2 0bo 1 o 0.8- 1.0 Schoiz et al. (Ref. 22) 16 It 0.62 0.62 Yeh and Loncman (Ref. 23) 29 + 3 16 +3 0

9 ’"S' 0 8 ? Coope et al. (Ref. 24) 29 + 10 14 +5

-0 3

TABLE III. Comparison of measured level width and branching ratio of the 4.84 MeV level in

20*Pb.

r„-/r (evt rvr

43t;’

5 1+0.8 I 6 +2

6 3 - 2.2 6.9 + 1.4 5 0 ± 0.8 0. 85 ^1.0

rom MBS-414 IMV. 7-I4.UI UlCOIMMtIMC

This work Swann (Ref. 10) Knowles et al. (Ref. I4b) Coope et al. (Ref. 24) Laszewski and Axel (Ref. 25) Chapuran et al. (Ref. 26)

et al. (Ref. 31) (OVER)

PHOTONUCLEAR DATA SHEET 335

U.S. DEPARTMENT OF COMMERCE

NATIONAL IURCAUOF STAnQAROS
128 130 132 134 a ( deg ) FIG. 5. The transmission curve resulting from the res- onance absorption, in a 7 mm thick absorber of :o*Pb of

the 7.06 MeV IR 1.76 MeV) decay gamma of the Er = 2.34 MeV resonance in ^Slp.yl^Cl. The ordinate

represents the total number of true counts in a spectrum

gate. The solid and dotted lines have the same meaning

as those described in Fig. 3. The value of the normalized X

1 for the fit is 0.63.

FIG. 3. Tne transmission curve resulting from the res- onance absorption in a 30 rr.n thick absorber of :o 'Pb of

the 4.84 MeV [R — 3.16 MeV) decay gamma of the Ep = 1 .68 MeV resonance in ^Stp.y^Cl. The ordinate

represents the total number of true counts in a spectrum

gate. The solid line is the best fit to the data. The dotted

line represents a fit of two closely spaced resonances m

:La Pb to the data. The value of the normalized X

: for the

first fit is 0.79 and for the second fit 0.33.

FIG. 6. The transmission curve resulting from the res- onance absorption in a 7 mm thick absorber of 20, Pb of

the 7.08 MeV (/? -. 1.76 MeV) decay gamma of the Ep = 2.34 MeV resonance in

)4S(p,y)J?C!. The layout is the same as described under Fig. 3. The value of the normalized X

1 for the fit is 1.18.

336
REF. G. Kuhner, D. Meuer, S. Muller, A.

W. Kniipfer

Phys. Lett. 104B , 189 (1981)

METHOD

Richter, E. Spamer, 0. Titze,

ELEM. SYM. A

Pb

REF. NO.

208 82

81 Ku 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

E,E/ SPC 8-12 D 30-50 MAG -I DST

El, E2 STRENGTH

Low momentum transfer, high-resolution inelastic electron scattering on 208 Pb has been used to study the distribution of El and E2 strength in the reason of excitation energy £x

=* 8-12 MeV. The El and E2 strength. is very fragmented and

the EWSR strength amounts to (10_^)% and (29*lg)% in the investigated energy region, respectively. The E2 strength found is less than most current theoretical predictions but agrees qualitatively with a Ip - lh + 2p - 2h model calculation presented in this paper. The E2 strength is also smaller than what is known from hadron scattering and the shape of the

strength distribution is also markedly different in electron and hadron scattering.

„ 208

E Pb(e.e')

- 0. 3.

Ul

CO

El STRENGTH

lOOf- E 2 STRENGTH

30|-

l ; ig. 3. Experimental El ('upper part) and E2 (middle pan)

strength distributions and a theoretical E2 strength distribu- tion (lower part) calculated as described in the main text.

form N3S-41H (MV. 7 • 1 4» 64

1

U3COMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 337

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAN3AROS
ntF R- Leicht, M. Hammen, K.P. Schelhaas, B. Ziegler

Nucl . Phys. A362 , 111 (1981)

EL CM. SYM. A Z

METHOD

Pb

REF. NO.

208 82

81 Le 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

type range TYPE RANGE

G,G ABX 10-100 0 10-100 NAI-D DST

-

Figure 5 shows expanded energy region between 10 and 40 MeV SEE 82LE3

Abstract: Experimental data on elastic scattering of photons in the energy range from 10 to 100 MeV

for the nucleus " oa Pb are presented. These new data along with some previously published data on photojabsorption are tentatively analysed in the framework of a consistent description. Besides

a value tor the summed total strength, the partial strengths of some multipoles were obtained. An

electric quadrupole resonance was found to be located at 24.3 MeV with a strength of 1.4 isovector sums. An experimental value was deduced for a parameter which can be regarded as a half-density radius for the spatial interaction strength density distribution, including exchange currents, in a

nucleus. This radius parameter was found to be 4.9 + 0.15 fm, considerably smaller than the

electrical charge density distributions radius (6.6 fm). as obtained by elastic electron scattering.

E NUCLEAR REACTIONS 20 "Pb(r, y), £ = 10-100 MeV : measured <r( E. 0). 20, Pb deduced E2 resonance parameters, radius parameter. Enriched target.

Table 2

Parameters obtained from an application of eqs. (5) and (8) to experimental data on photoabsorption and scattering

£„ (MeV) T. (MeV) D. Remark

El 11.62 1.3 0.07 lower part of giant dipole

13.5 3.5 1.15 main giant dipole 26 ±2 8 ±2 0.05 ±0.01 first harmonic dipole? 67 ±3 105 ±10 0.75 ±0.02 "quasideuteron"

E2 24.3 ±0.4 4.5 ±0.5 0.05 ±0.0 1

5

giant quadrupole resonance

1 .4 isovector E2 sums

Ml or E2 16 ±0.2 5 ±0.4 0.05 ±0.0 1

5

charge exchange Ml?

3.2 isovecior E2 sums, if E2

sum of all multipoies: 2.12

radius parameter of 2-parameter Fermi distribution: C = 4.9±0 12 I'm. D< in units of the classical dipole sum (3 b MeV).

(over)

foam M8S-418

(ACV. 7» I 4» 44t USC OMM*N BS*OC PHOTONUCLEAR DATA SHEET 338

U.S. DEPARTMENT OF COMMERCE

NATIONAL. SURCAUOF STANOAROS
Fig. 4. In this figure all experimental information on absorption *•*), and scattering is summarised. The

parameters, describing simultaneously absorption and scattering cross sections, are listed in table 2.

339
Z.W. Bell , L«S. Cardman, P. Axel

Phys. Rev. C25, 791 (1982)

CL CM. SYM. A Z

Pb 208 82

REF. NO. 82 Be 2 hg

METHOD

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TVP C RAN6C TYPE RANGE

G,N ABX 9-12 D 9-12 TOF-D DST

(9.9-11.2) (9.9-11.2)

Coefficients of the Legendre expression can be found in the

Plots of coefficients are in Figs. 13, 14, 15.

The partial differential photoneutron cross sections for :o*Pb were measured in the en- ergy region from 9.9 to 1 1.2 MeV with an energy resolution of about 100 keV. Neutrons

leaving ^Pb in its ground state and first two excited states were resolved, and angular

distributions were determined from measurements at seven angles from 45* to 135*. These data provide more information about the fine structure observed in earlier, poorer

resolution measurements of the total photoneutron cross section and strongly support the

interpretation of this structure as being due to electric dipole excitations. The measured

partial cross sections provide a sensitive test for models attempting to describe the photon

interaction cross section and the coupling of the excited states to the continuum. Calculations using a statistical model with transmission coefficients obtained from a conventional

optical model are unable to explain even the average behavior of the branching ratios with energy. The measured angular distributions show clear evidence for interference of

either El or Ml processes with the predominant El interaction. The interference terms have a magnitude approximately equal to that predicted by a simple direct-semidirect cal- culation including the electric dipole and isoscalar electric quadrupole giant resonance. However, this agreement is puzzling because the average of interferences between the many compound nuclear levels in this region of excitation would be expected to reduce

anisotropies about 90* toward zero.

NUCLEAR REACTIONS 20*Pb(y,/t), £=9.9- 1 1.2 MeV; tagged

photon resolution 120 keV; measured cr(£,,0), 0=45*- 135*; observed

interference of either £2 or M1 with £1.

paper in Tables III, IV, V.

PHOTON ENERGY (MeV)

FIG. 5. The total photoneutom cross section plotted

as a function of photon energy. The triangles are the data of Ref. 1 and the solid dots are the results of the

present experiment. The solid curve is the extrapolated

tail of the Lorentz line fit to the giant dipole resonance

data of Ref. 1.

'A. Veyssiere, H. Beil, R. Bergere, P. Carlos, and A.

Lepretre, Nucl. Phys. A159. 561 (1970). ^ / TABLE I. Partial cross sections (mb).

Ey 0Q 0|

(MeV)

11.20 23.6±2.5 49.2±4.5 86.4±5.5

11.08 38.2±3.0 49.9±4.6 93.0±5.3

10.84 37.7±2.4 58.8±3.9 101.4±5.0

10.70 28.1 ±2.3 43.4±3.7 106.6±5.7

10.60 46.5±2.2 62.9±3.6 1 19.7±5.0

10.48 29.5 ±2.3 48.5±3.6 78.7±4.9

10.34 19. 2± 1.7 33.4±2.5 52.2 ±3.1

10.21 27.2±2.1 40.5 ±3.2 57.3±4.2

10.11 46.8 ±2.3 49.5 ±2.9 104.3±3.9

10.01 58.9±2.5 40.7±3.0 76.2 ±4.0

9.92 33.1 ±2.9 38.5±3.6 36.2 ±4.6

38.4+18.9

38.4+18.9

12.5 ±6.3 7.9±3.9

0.5 ±0.6 —0.5±2.7

1.4±0.5

4.3 ±2.1 —0.4±2.4

0.1 ±0.5 —0.3±0.5

10.3 iO. 7 CN£RGY(VI#V»

FIG. 8. The partial cross section for ^Pbty.n) reactions leaving M7Pb in excited states higher than the second plotted as a function of gamma ray energy.

(OVER)

foam M8S-41I

(A IV. MfcMI

USCOMM-NRS-OC PHOTONUCLEAR DATA SHEET 340

U.S. DEPARTMENT OF COMMERCE

NATIONAL IUAIAUOF ST ANOAADS
FIG. 7. The partial cross sections for -'“'Ptyy.n) re- actions leaving 3,7Pb in ks ground state (<7o), first excited sute and second excited state (a1

) plotted as a

function of gamma ray energy.

cos 9

FIG. 11. A representative set of angular distributions for the three partial cross sections measured. The solid curves are the fits to the data obtained using a Legendre

expansion.

341
kef. Z.W. Bell, L.S. Cardman, P. Axel

PhySc Rev. C25, 791 (1982)

EL EM. SYM.

Pb 208 82

METHOD REF. NO. 82 Be 12 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

G,N ABX 10-11 10-11 TOF-D DST

The partial differential photoneutron cross sections for :o*Pb were measured in the en- ergy region from 9.9 to 11.2 MeV with an energy resolution of about 100 keV. Neutrons

leaving ^Pb in its ground state and first two excited states were resolved, and angular

distributions were determined from measurements at seven angles from 45* to 135*. These data provide more information about the fine structure observed in earlier, poorer

resolution measurements of the total photoneutron cross section and strongly support the

interpretation of this structure as being due to electric dipole excitations. The measured

partial cross sections provide a sensitive test for models attempting to describe the photon

interaction cross section and the coupling of the excited states to the continuum. Calculations using a statistical model with transmission coefficients obtained from a conventional

optical model are unable to explain even the average behavior of the branching ratios with energy. The measured angular distributions show clear evidence for interference of

either £2 or Ml processes with the predominant £1 interaction. The interference terms have a magnitude approximately equal to that predicted by a simple direct-semidirect cal- culation including the electric dipole and isoscalar electric quadrupole giant resonance. However, this agreement is puzzling because the average of interferences between the many compound nuclear levels in this region of excitation would be expected to reduce

anisotropies about 90* toward zero.

[

NUCLEAR REACTIONS :08Pb<r,n>. £=9.9- 1 1.2 MeV; tagged

photon resolution 120 keV; measured cr(E„,9). 9 = 45’— 135’; observed

interference of either £2 or .V/l with £1. TABLE I. Partial cross sections (mb).'

TABLE II. Configuration probabilities for £1 states.

3 FINAL STATE SIGS

G

usQ

ft u

(MeV)

<r0 <*\ £7 2 <*> o

(/i c

Xf

11.20 23.6+2.5 49.2±4.5 86.4 + 5.5 38.4 + 18.9 £

x

11.08 38.2±3.0 49.9±4.6 93.0 ± 5-3 38.4± 18.9 u

10.84 37.7+2.4 58.8 ± 3.9 101.4 + 5.0 12.5 ±6.3

10.70 28.1+2.3 43.4±3.7 IOft.ft±5.7 7. 9 + 3.

9

-

10.60 46-5+2J 62.9 ±3.6 119.7-5.0 0.5 +0.6

LU

-J 10.48 29.5 ±2.3 48.5±3.6 78.7 -4.9 —0.5±2.7 S

<

10.34 19.2+1.7 33.4+2.5 52.2*3.1 1.4±0.5

10.21 27.2 ±2.1 40.5 ±3.2 57.3 ±4.2 4.3±2.1

10.11 46.8 ±2.3 49.5 ±2.9 104 3 ±3.9 —0.4 + 2.

4

10.01 58.9 ±2.5 40.7 ±3.0 7ft .2 -4.0 0.1 +0.5

9.92 33.1 ±2.9 38.5±3.6 36.2 ±4. ft -0.3 ±0.5

o

+i

-aO

d

» >o » r~ O' -O odd +i +i +i

-r — r- a

•N in -r d — o'

I I I

«£ o£ 90,

d —

+i +i +l ssije

© TM H

Uj

o' o d o' o © © © © o ©

+1 +1 4-1 +1 +1 4-1 +1 4-1 +1 -H 4-1 n r* ir» — — ddddriddd-o'ri

>o ^ in

»—) <*r vr> o' d d o' o o o' o' d o o’

4-1 +1 +1 +1 +| 4-1 4-1 4-1 4-1 4-1 4-1 — — — o* o o’ o’ — —

O'-’i^oor^oo^r— pi ri — — — — — r( rs d d d d c o o' o o o o'

4-1 4-1 4-1 4-1 4-1 4-1 4-1 4-1 4-1 4-1 4-1 — ri in n ^ J ri n in

O » 4 rs o oo — — OOO004---fN

do odd do d

ai Ij) Configuration Harvey and Rhanna

(Ref. 21) Empiric

^i/t.Pi/z

-1

) 0.004 0.142

0.098 0.003 0.028 0.243 0.000 0.008 0.696 0.008

f J l/I»P3/I~‘) 0.032 0.008

<4s/2,/>3/2 - ') 0.055 0.008

(<*3/2.P3/2~'> 0.089 0.567 I0T0NUCLEAR DATA SHEET 342

U.S. OERARTMENTOF COMMERCE

NATIONAL. IURCAU OF STANOARO*
ref. J. Heisenberg, J. Lichtenstadt, C.N. Papanicolas, J.S. McCarthy

Phys. Rev. C25, 2292 (1982)

EL EM. SYM.

Pb 208 82

METHOO REF. NO. 82 He 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TV Pf RANGE E,E/ FMF 3-5 D 50-335 MAG-D DST

-

High resolution electron scattering measurements on

:osPb have been performed at 90" and 160". which allow the spanal reconstruction of transition charge densities and for the

first time, transition current densities. The measurement covering the momentum transfer range of 0.5 <2.6 fm -1

is supplemented by high momentum transfer data from Saclay,

extending the data for some of the states up to a momentum transfer of 3.4 fm -1

. We re- port on the first three J

r=5~ states and the first J

w =1 ~

state. Transition charge densities have been also extracted for the lowest J"=l+, 4

+

, 6

+

, and 8 +

states. The densities are compared to a number of theoretical calculations. Transverse electric currents are shown

for the 5“ states that indicate a quenching of the magnetization current similar to observations from other states but the absence of quenching in the convection current contribution. “NUCLEAR REACTIONS :o *Pb(e.e') measured cross sec ions at 90*"1 and 160", 0.5 <9 <2.6 fm -1

. Low lying J'

r =l+, 4

+

, 6

+

, 8 +

, 5~, 7~

states analyzed. Transition charge densities and current densities ex- tracted in DWBA.

9 LEVELS 2. 6-4. 6 MEV

Transition Charge Density Transition Charge Density

Radius [fm] Radius [fm] FIG. 4. Transition charge densities for the even spin natural parity states in :o*Pb. The theoretical curves are from:

(a) Bertsch and Tsai (Ref. 21). (b) Kmipfer and Huber (Ref. 22). (c) Gogny and Decharge (Refs. 4 and 35). and id) Heisenberg and Krewald (Ref. 23).

FORM M8S-41S

(P EV. 7.14.44* USCOMM.OC 240I0.P44

(OVER)

u.s. department cgmmepc

NATIONAL. 8UBE»u O ^ Sr PHOTONUCLEAR DATA SHEET 343
<n

i£

a.

Radius [ fm] Radius [ fm]

FIG. 8. Transition charge and current densities for the first three 5 “ levels in

:o,Pb. The theoretical curves are (a) from Heisenberg and Krewald (Ref. 23), (b) from Gogny (Ref. 35), (c) from Kniipfer and Huber (Ref. 22), and (d) from

Bertsch and Tsai (Ref. 21). For the 3.961 MeV state curves (b) are from Ref. 23 also but calculated with a shifted h<,/2 energy.

344
*ef. R.S. Hicks, R.L. Huffman, R.A. Lindgren,

S. Raman, C.P. Sargent

Phys. Rev. C26, 920 (1982)

METHOD

B. Parker, 6. A. Peterson, EL EM. SYM. A

Pb

ME F. NO.

82

Page 1 of 3 82 Hi 1 egf

REACTION RESULT EXCITATION SOURCE OETECTOR

ANGLE ENERGY TYPE ft AN QE TYPE RANGE

E,E/ 2-8 D 40-75 MAG-D 180

-

Inelastic cross sections for 1 80* electron scattering from 108Pb have been measured at in- cident energies of 40.5, 50.4, 60.3, and 75.2 MeV. Transverse electric form factors have

been determined for the 3" state at 2.614 MeV, the 5~ states at 3.198 and 3.708 MeV. the 2 + states at 4.085 and 6.21 MeV, the 4

+

state at 4.323 MeV, and the 6

+

state at 4.422 MeV. The results for these natural parity states are compared to the predictions of an in- compressible. irrotational current model, and of a panicle-hole model. All transverse electric form factors show strong contributions from intrinsic magnetization currents. Transverse form factors were obtained for the proposed 1 * state at 4.84 MeV, for the group of

1 + states at 7.48 MeV, and for several proposed 2“ states. A search for M 1 transition strength was made up to excitation energies of 19 MeV. The future of electron scattenng

as a tool for probing M 1 strength in

;o8 Pb is discussed.

10 LVS 2.61-7.48 MEV

NUCLEAR REACTIONS 208 Pb(e.e'), £ = 40.5, 50.4, 60.3, and 75.2 MeV, measured <r( 180*). 208 Pb deduced levels and transverse form factors. Enriched target, magnetic spectrometer.

Excitation Energy (MeV)

Fig. 1. Measured spectra of electrons inelastically scattered from 208 Pb.

'oiim H8S-418

(ft CV. 7-1 4-641 USC OMM^N BS*OC PH0T0NUCLEAR DATA SHEET 345

U.S. DEPARTMENT OF COMMERCE

NATIONAL •UMIAUOF 5TANOASOS-
Page 2 of 3

Excitation Energy (MeV)

Fig. 2. Scattered electron spectrum , obtained with 50.4 MeV electrons, shows a large

elastic peak and little evidence of significant sharp structure In the range E x 9-19

MeV.

Excitation Entrqy (MtV)

3 0

3 0

Fig. 6. Detail of an Inelastic electron

spectrum showing candidate Ml peaks at 4.84 and 7.48 MeV.

q.» (fm '

>

i O'*

0 0408121620

q et ,( fm “>

Fig. 3. Transverse (e,e') form factors

for low-lying electric transitions in 208 pvj _ i n cases where no experimental

datum ls explicitly shown, the error bar indicates an upper limit, l.e., tne measured value plus three standard deviations. The solid curves are for irrotational, Tassie-nodel currents. Dashed

curves include, in addition, neutron mag- netisation currents due to predicted

strong particle-hole components, as described in the text. To facilitate the comparison of measurements taken under

different kinematic conditions, the data

and the DWBA calculations are plotted as

a function of an effective momentum transfer defined by (see Ref. 12) qe ff

*

1[ l + ^Zo/aE^R) ] . where a is the fine structure constant, and R is the uniform

density charge rqdius.

346
ref. C.N. Papanicolas, J. Heisenberg, J. Lichtenstadt, J.S. McCarthy, elem. sym. a D. Goutte, J.M. Cavedon, B. Frois, M. Huet, P. Leconte, Phan Xuan Ho,

S. Platchkov, I. Sick Pb

Phys. Lett. 108B , 279 (1982)

METHOD REF. NO.

208

z

82

82 Pa 1 egf

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE TVP| RANOS TYPE MANGE

E,E/ FMF 3,4 D 350-502 MA6-D DST

3=3.198,4=3.709 MEV

The transition charge densities tor the two lowest 5* states in -08 Pb have been determined from recent electron scattering data. The high momentum transfers achieved allow a very precise determination of their detailed structure. They are

in disagreement with present theoretical calculations.

'° o

'5

1.0 1.5 2.0 2.5 3.0 3.5

q

eff (fm' 1 )

rig. 1. Hxperimcntal values for dotu > ,or •unaitu- dinal inelastic electron scattering, rite be->t tits obtained using phenomenological transition densities are also shown.

5

r (fm)

I ia. 1. Comparison of the extracted transition charge densities to a number ot theoretical calculations tor the lowest f” = J- states of 108 1’b: curve \ i> that of kniipfer and Huber

|9 |

; If is that ot Rhode! and Supcrstein | I 2 |

. t is that ot Goans and- Decharae ( I 11

! and If is that ot liertsch and f'ai.

foam H8S-41I

IA1V. M4.MI

USC OMM-NISd)C PHOTONUCLEAR DATA SHEET 347

U.S. OERARTMENTOF COMMERCE

NATIONAL IUACAUOF STANOAROS
nep. R.D. Starr, P. Axel, L.S. Cardman

Phys. Rev. C25, 780 (1982)

EL EM. SYM.

Pb

A

208

z

82

MCTHOO REE. NO. 82 St 1 hg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE KANOS TYPE RANGE

G,G ABX 9-12 D 9-12 NAI-D DST

(9.5-12) (9. 5-. 2)

The elastic photon scattering cross sections of “‘Pb and 206Pb were measured at 90* and

133* in the energy range from 9.3 to 12 MeV with a tagged photon beam whose energy

spread was about 123 keV. The “‘Pb cross section rises monotonically with energy, and

is consistent with a total photon interaction cross section which has a Lorentzian energy dependence with a peak cross section of 630 mb at 13.6 MeV and a width r=3.8 MeV.

The *°*Pb scattering cross section is larger and has some rapid variations with energy;

there is a narrow extra peak near 10.04 MeV and there are abrupt increases in the cross

section just below 10.6 and- 11.3 MeV. The relative scattering observed at the two angles

indicates that all of the scattering, including the rapid variations with energy, is dominated by dipole interactions. This dipole assignment for the fine structure is important for the proper interpretation of inelastic electron scattering by M,Pb. Some of the observed

fine structure in inelastic electron scattering must be dipole; the fine structure previously

reported as being due to electric quadrupole excitation should be considered as tentative

until the correct dipole contributions are included.

NUCLEAR REACTIONS M6- 20,Pb<n'>, E =9.5- 12 MeV; measured

<j(E°,9Y, resolution 123 keV; observed fine structure; inferred dipole ex- citation.

-1

1—

]

1 ; 1 1 1—

i io,p«aojustedi }{f 1 «' *'

-1

j

20*Pb(89%)

\ Ilf i Jtfti *

*

* 9 *

l \

! y

r

j 1 1 I 1 1 1 ».* >0.0 >0.4 I0.S H.2 ll.i >2 0 Ey (MOV) FIG. 4. The ratio of the differential scattering cross

sections at 135* to those at 90*: The circles are used for the lower energy range (run 1 in Table I), while the squares correspond to the higher energy run. The ratios that are determined reliably are consistent with the value of 1 .5 expected for dipole radiation.

0.3

0.4

i

°- s

6

ii|S az

0.1

0

FIG. 2. Differential elastic scattering cross sections

for :o8 Pb: The open symbols give the values obtained at

133*, while the dark symbols correspond to 90*. In both

cases, the circles give the data obtained in the lower en- ergy range (run 1 in Table I), while the squares were obtained during the higher energy run. The errors are statistical.

1 1 1 1 1

l0,Pb(*d|«»«4 For *°*P» Conltntl f ELASTIC PHOTON

SCATTERING

! i-'3s*

i i-so*

i i

Lit

I i !ii‘

< i

10.0 10.4 IO.S 11.2 Ey(M«V)

> 2.0

FIG. 5. The elastic photon scattering cross sections

for '°*Pb: The values of the cross sections integrated

over angle were inferred from the data at 135* (open

symbols) and 90* (solid symbols) using Eq. (16). The circles correspond to the lower energy run (i.e., run 1 in Table I), while the squares correspond to run 2. The observed cross sections are well above the solid line expected if the photoabsorption were an extrapolation to low

energy of the giant dipole resonance. The dashed line il- lustrates the scattering that would be expected if there were additional concentrations of photon absorption, as described in the text.

foam N8S-41S

IA(V. 7-1 4-441 USCOMM-NSS-OC

u.s. oepaatmentof commerce

NATIONAL OUREAUOF ITAnOAROS

PHOTONUCLEAR DATA SHEET 348
TABLE I. Elastic scattering cross sections.

Run No. Counter

Energy

(MeV)

^Pb

°rf

(mb)

:0,Pb arr (mb)

206pbc arr (mb)

a*Pbc arr (mb)

2 1 11.95 5.46+0.23 5.46±0.30 3.44±0.12 2.38 ±0.1

5

2 2 11.78 5.05+0.20 4.72 ±0.25 2.71 ±0.10 2.68 ±0.1

3

2 3 11.64 4.03 ±0.20 4.12±0.28 2.33±0.10 2.30±0.13

2 4 11.45 4.43 ±0.1

7

4. 16±0.28 1.98 ±0.08 1.98 ±0. 12

2 5 11.27 4.98 ±0.19 5.01 ±0.23 2.04±0.09 1 .59 ±0. 10

2 6 11.12 3.45±0.16 3.05 ±0.25 1.54±0.07 1 .57 ±0. 10

i 1 11.00 2.22 ±0.22 1.71 ±0.20 1.37 ±0.09 1.37 ±0.1

7

2 7 10.96 2.35 ±0.1

5

2.23 ±0.20 1.33 ±0.08 1.12±0. 10

1 2 10.87 2.32±0.25 1.91 ±0.18 0.98 ±0.07 1.02 ±0.1

3

2 8 10.77 2.23 ±0.12 2. 16±0. 13 0.96±0.06 0.96±0.08

1 3 10.75 1.92±0.23 1.78 ±0.1

8

0.86±0.08 0.96 ±0.1

5

1 4 10.60 1.98 ±0.21 2. 11 ±0.1

8

0.75 ±0.07 0.75 ±0.1

2

2 9 10.60 2.30±0.12 2.21 ±0.1

8

0.82±0.06 0.8 5 ±0.08

2 10 10.46 1.50±0.12 1.64±0.18 0.58 ±0.06 0.70 ±0.08

1 5 10.45 1.12±0.19 1.27±0. 17 0.61 ±0.06 0.92 ±0.1

2

1 6 10.32 0.52 ±0.1

6

0.87±0.12 0.63 ±0.06 0.59±0.10

2 11 10.32 0.86±0.1

1

0.96 ±0.1

8

0.47 ±0.06 0.49 ±0.08

1 7 10.19 • 0.73 ±0.1

9

0.99 ±0.13 0.38 ±0.06 0.52 ±0.12

2 12 10.19 1.17±0.12 0.75 ±0.20 0.41 ±0.06 0.20 ±0.08

1 3 10.04 1.91 ±0.07 2.03 ±0. 1

7

0.49 ±0.06 0.44±0.10

1 9 9.90 0.87 ±0.20 1. 12±0. 13 0.23 ±0.04 0.42 ±0.10

1 10 9.78 0.56±0.16 0.64±0.13 0.31 ±0.06 0.59 ±0.1

7

1 11 9.67 —0.02±0.15 0.1 5 ±0.1

3

0.30±0.06 0.37 ±0.1

5

1 12 9.56 0.29 ±0.1

3

0. 1 8 ±0. 1

7

0.22 ±0.04 0.37 ±0. 13

•Calculated from 135* differential cross section assuming dipole radiation. ‘Calculated from 90* differential cross section assuming dipole radiation. "Not corrected for 2.7% ^Pb or 9.0% 207Pb in enriched :o*Pb target.

349
* eF K. Wienhard, K. Ackermann, K. Bangert, U.E.P. Berg, C. Biasing,

W. Naatz, A. Ruckelshausen, D. Ruck, R.K.M. Schneider, R. Stock

Phys. Rev. Lett. 49, 18 (1982)

EL EM. SYM.

Pb 208 82

methoo REV. NO.

82 Wi 5 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

TYPE R AN SC ANGLE

$ Y»Y ABX 4-7 C 10 SCD-0 DST

The parities of eleven «/* 1 levels In 20*Pb were determined by nuclear resonance flu- orescence scattering of linearly polarized photons. A new 1* level at E, * 5.846 MeV

' with r0

2/r a 1-2 ±0.4 eV was found. This level can probably be identified with the theoretically predicted isoscalar 1* state in 2MPb. All other bound dipole states below 7 MeV

- with r0Vr> 1.5 eV have negative parity. The 1" assignment to the 4.842-MeV level is of *- special significance because of previous conflicting results about its parity. $ BEAM, SCTNG ASM

PACS numbers: 21.10.Hw, 25.20.+y, 27.80. +w

( qui j

5

« 1a 3 T

c n io w

£ A) «

a

FIG. 2. Part of :08Pb(yool ,y) spectra in the 5- MeV

region. In the upper part the electric vector E of the incoming photons was perpendicular and in the lower

part parallel to the scattering plane as shown in the inset.

• OHM Mt*>4t«

IN(V. 7.14.V4I UICOMM-NIMC PHOTONUCLEAR DATA SHEET 350

u.s. department or commerce

NATIONAL luntAuOT IT ANOAROS


REF.

METHOD

I. Bergqvist, D. M. Drake, and D. K. Nucl. Phys. A191 . 641 (1972)

McDaniel

s

EL EM. $ I'M. , A

Pb 209 82

REF. NO. 72 Be 7 egf

REACTION RESULT excitation

ENERGY

SOURCE DETECT O R angle TYPE RANGE TYPE range

N,G ABX 10-19 D 6-15 NAI-D 90

ENERGY. MeV

Fig- 6. Totai m.y) cross section tor the y-ray transition to the g

- ground state level of :o, Pb. The differential cross section at 90.’ was

evaluated using eq. (4) of the text and the total cross section obtained by multiplying by 4.t. The upper curve is the prediction front cq. (4) of the semi-direct theory of Clement et at. •). The lower curve is the theoretical prediction of the direct capture theory of Lane and Lynn J0

).

g C.F. Clement et al. , Nucl. Phys.

66 (1965) 273, 293

30

A.M. Lane et al. , Nucl. Phys. 11

(1959) 646

Fig. 5. Comparison of the measured spectra and those predicted from semi-direct capture theory

at 6 neutron energies spanning the giant-dipole resonance. The experimental spectra were normalized

to the same amount of charge and to the Nal(TI) detector efficiency of the ground state transition. The theoretical spectra were computed using the cross-section predictions of Clement

et al. *). for cachy-ray transition to a single-particle state of J0,> Pb, folding in the measured Nal(Tl)

detector line shape, and correcting for the detector y-ray efficiency. The theoretical spectra were

normalized absolutely to ‘the measured ones by making the number of events below 2.5 MeV

(excitation energy) the same in both spectra. form N3S-418

(R EV. 7-1 4-841 USCOMM-OC 28 010- P8 4 PHOTONUCLEAR DATA SHEET 353

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
I REF. D.M. Drake, S. Joly, L. Nilsson, S.A. Wender, K. Aniol

D. Storm

Phys. Rev. Lett. 47, 1581 (1981)

methoo

I. Hal pern,

EL EM. SYM. A

Pb

REF. NO.

209 82

81 Dr 4 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

angle TYPE RANGE type range

N,G RLY

—

J

1 ro 4^ D 7-20 NAI-D DST

The forward-to- backward asymmetry of high-energy photons emitted in the radiative capture of neutrons with energies up to 20 MeV was measured for 208 Pb. The asymmetry

increases abruptly from small values to large ones near £r ~23 MeV supporting the location in that neighborhood of the £2 giant isovector resonance.

M£AS FORE-AFT ASYMMET

PACS numbers: 24.30.Cz, 25.40.Lw

io

2

. 1 * r

k>

FIG. 2. The high-energy photon (photopeak) spectra

measured at 55° and 125° when :08 Pb is bombarded with 20- MeV neutrons. These spectra have been corrected

for attenuation in the target and for Doppler shift, but were not in any other way renormalized. The two spectra were individually unfolded with use of the measured

line shape (shown in the figure for £r = 24 MeV) and the asymmetries A(55°) were computed as a function of photon energy. These asymmetries were combined with

the results obtained from the one-escape spectra and are plotted in the lower portion of the figure. The energies for the five points of lowest excitation correspond

to known states or doublets in

203 Pb. The higher points were arbitrarily placed i MeV apart. The unfolding was terminated at £r = 18.8 MeV.

E„ (MeV)

10 15 20

FIG. 3. The measured fore-aft asymmetry A(55°) for photons emitted to the ground state of 208 Pb when neutrons of energy £„ are captured in

208 Pb.

form N8S-418

(R £ V . 7-1 4-64) U3COMM.QC 260 t 0«P64 PHOTONUCLEAR DATA SHEET 354

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
* eF S.E. King* M. Potokar, N.R. Roberson, H.R. Weller, D.R. Tilley

' Nucl . Phys. A384 , 129 (1982)

EL EM. SYM. A Z

METHOD

Pb 209 82

REF. NO. 82 Ki 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE ft AN GE

N,G0 ABX 10-19 D 6-15 NAT-0 n-rr

Abstract : The giant dipole resonance region of :o, Pb has been studied via the reaction J0, Pb(n. >•) for transitions leading to the ground and first excited states of 20,Pb. Measured angular distributions were used to extract a2 coefficients at 8 energies and a, coefficients at 4 energies between 10 and

13 MeV. The results are compared to direct-semidirect model and pure resonance model

calculations using both real and complex form factors. Absolute cross sections at 90° were measured in 200 keV steps from £„(£,) = 7.0(10.9) MeV to 13.0(16.9) MeV and are compared

to previous data and to DSD and PRM calculations. The transitions to the ground and first excited

states exhaust 0.39% and 0.13% of the classical dipole sum. respectively, between the excitation energies of 10.9 and 16.9 MeV.

NUCLEAR REACTIONS :o 'Pb(n, •/), £ = 7-13 MeV: measured <x(0). 20, Pb levels deduced

dipole EWSR in GDR region. Direct-semidirect, pure resonance model calculations.

E

y (Mev)

10 12 14 '6 18 20

Fig. 3 . Absolute 90® cross sections tor •""Pbtn. v,,i ThcTl'NL data ( I and the data from ref % ( < ) are compared to DSD model calculations using a real form factor (dashed line) I’, = 75 McV. and a complex

form tactor (solid line) I', = 75 MeV. H‘, = 125 MeV. The PRM calculations with a real form factor Idotted line) I’, = 132 MeV. and a complex form factor (dot-dashed line) = 132 MeV. If, = 132 McV

are also shown. Other parameters ol (he calculations are given in ref.

IJ

). The error bars include the

uncertainties due to background subtraction and stripping procedures as well as the statistical uncertainties associated with the data points.

(OVER)

FORM N8S-4U

(RCV. 7-1 4-«4l • USC OMM*N IS*OC PHOTONUCLEAR DATA SHEET 355

U.*. DEPARTMENT OF COMMERCE

NATIONAL BUREAuOF ITinOASOS
I

Fig. 4- The differential cross sections measured at 90° for J09 Pb» n. y , ). The notation for the data and model

calculations is the same as in fig. 3.

J08Pb(n,r

0

) E„=IOMeV ^“bln.y,)

Fig. 5. Angular distnbutions for 20*Pb(n. y) at 10.0 MeV neuiron energy and fits (solid line) to the data

using Legendre polynomial expansions. The angular distribution coefficients arc given in table 1.

Table I

Angular distribution coefficients obtained from the data, the errors are discussed in the text

E. (MeV)

Vo 7 1

't a 2 ‘'i

(1 2

10 0.10 + 0.06 -0.42 = 0 12 0 15 ± 0 07 0.60 r 0 10

10.5 — 0.67 r0. 16 0.31 ±0.17

II 0 24 ±0.07 — 0.56±0.09 0 10 ±0 09 0.34 ±0.10

11.5 — 0.55+0.12 0.33 ±0.20

1 1.7 -0.39 + 0 20 0.50±0.16

12 — 0.83-0 14 0.43 ±0. 16

12.5 0 20 + 0.08 -0 I5±0 15 0 22 ±0 09 -0.03 ±0.14

13 0.19 + 0.12 -0.70 + 0 17 -0 09 - 0 11 — 0. 16 ± 0.2

1

356
\ As209

'i ....

- - BiSfum

-- ' Z=83 \

. \-

Bismuth was probably not recognized as a specific metal by

the early orientals, Greeks, or Romans, but by the Middle

Ages, Europeans were becoming aware of its special nature.

Basil Valentine, in the Fifteenth Century referred to it as wismut (from the German Weissmuth, "white matter"), Georgus

Agricola, at the end of the sixteenth Century, Latinized

wismuth to bisemutunu It was not until 1739 that J. H. Pott

first demonstrated the characteristic properties of bismuth.

: I

-

: •

. l . .

• Bi

' : •

' -’

' A=209

Bi

A=209
. • . ' • ; ,.[358
Ret. F. Ferrero, A.O. Hanson, R. Malvano, C. Tribuno

Nuovo Cimento 4l8 (1956)

Elem. Sym. A Z

Bi 209 85

Ref. No. 5c Fe 1

Method Betatron; threshold detector

EGF

Reaction E or A E ad E J n Notes

(Y,n) Bremss.

50

j

I l.m-ruv '|»'i irum nr

! In -

}

• ii. • t . .i i«. u i n»n« I'mrn u t It

>' \i<-\ ;i» iili>cr\<‘<l l>\

I 'tin i ;

,

form NBS-418

U SC OMM-OC I 89S«-P 63

I

i

\i . . <1 «' > • i mi r«Hi« * i • »mi l«r^m tti It >rr nti. »(<•! <>v jn .uni l i • \

'.*• Mt»«r r / i' »|rlff»f»t *i\ I li«- »im I* ( -fm

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF ST»NDARD 5 PHOTONUCLEAR DATA SHEET 359
Ref. E.Gc Fuller, E. Hayward

Phys. Rev. 101, 692 (1956)

Elem. Sym.

Bi 209

Ref. No.56 Fu 1

83

Method Betatron; photon scattering; Nal spectrometer NVB

Reaction E or AE S*

dE J " Notes

Bi209

(Y,Y) Bremss.

4-40

Detector at 120 .

Cross sections given here are too

high due to erroneous cos 3 factor in

denominator of Eq. 5 . [See footnote

8 in Phys. Rev. 106, 993 (1957)].

T

'

-a &

T* T -

> ««, I. (« fSIt Mt I TV* mm IT • R. lui rurscr ami G. L. Water, I’hys. Rev. Tit, ,w>J l'U

* I » (••'hihahcr, an<i Hanson, i’hys. Rev. 77, 754 < 1

‘

«

M. ii. suarr.s, l’hys. Rev. S7, 7uo <.1^52). form H8S*418 USCOMM-OC 1883«-P«3

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 360
B.I. Gavrilov, L.E. Lazareva

Zhur. La-sp.* i Teor* .. Fiz. ^0, 855 (1956);

Soviet Pnys. JETP _

o71 ( 1957 )

Method 'y-Bremsstrahlung; synchrotron; BF^ counter

Elem. Sym.

Bi 209

Ref. No. 56 Ga 1

£5

EGF

Reaction E or AE

s

<7d E J ” Notes

(Y,xn)

(, t

)

- 7.5-27

-7.5-27

15.9

15.8

5.9

1+.8

3.96 MeV-b

3.12 MeV-b

6 l

TaBL£ 1. Kunaamental rharnctetmtics of pbotoaeutron cross sections.

Klcmcnt f

-, ...

in mev m barns

Half width

in msv

f.

Jo, <E)ae em

in mev -barns

1 Jo, (Et 4E.9H mat; E

,7, 0.U6 4.3 0.93 7;

t.upprr t6.3 0 1 '.nj 6.3 U.66 8.1 Zmc Hi 2.28 H i

' .adfliiufll 6.0 2.13 H. 2 r.,5 »>.M 3. ST H.6

r.oia 14 : rt. -.71 6 0 4 3*

Tii allium , .:.5 3 . \ 4,'rtl 7.H

Mitmuin 13.1) t i

• :» 9 3 urt 1 . t Thorium 14.5 0.7*; 5 6 6.33 8.0

Irasnun \\:j 1 .1* 6.8 t2.5 10.

6

c

< } S

I I TABLE n. Threshold of photoneutron reactions ( mev ).

Element (T, n) (T. 2n) (r. 3rn (r. in)

Cadmium 6.7 14.6 23.0 >30

Iodine 9.4 16.2 26.0 32.9

Tantalum 7.6 13.9 21.6 28.2

Gold 8.1 14.9 23.9 >30

Thallium 7 . 5 14 0

OO ‘>8 8 Bismuth 7 4 14.2 22.5 29 6

i T

TABLE m. Characteristics of the cross section of absorption of y-qasats by nuclei.

Figure 2: Photoneutron cross section

EI«N Mtl

Eroo

in mev

* (£ -£ ) Y . . to barne

;Is

— 0

•

-

E,Ft*

ff

e.

\a

v

«r£. r-r* x i\ US A) V*T

E,

E* w

n :<v3 :.i ,« 0,111 0 . 00743 1.26

L5.5 0 .2.S8 1,86 t.U) 0.117 0.W7K8 1.16 Tantalum 13.9 0.448 2.74 t-,05 0,190 U.'M39 1,15 Cold 14.2 0.571 46 3,49 1.23 0.244 0,0182 1.23 Thallium 14.0 U.648 3.77 1.28 0.3bt> 0,0200 1.23 Uismsth

1

13.3 0,537 3.12 1.04 0,230 0,0178 t.ia

|

n, computed from the yield curves

by the "photon difference method,"

"+" -- cross sections obtained in

Reference 8 [Montalbetti, Katz and

Goldemberg, Phys. Rev. 91 . 659 ( 1959)1

For Cd, I, Ta, Au, T1 and Bi, curves

are presented for the cross section

of 7-quanta, computed from the

statistical theory of nuclei. " " -- cross sections obtained in Ref. 9

[Nathans and Halpern, Phys. Rev. 9

-

, -+57 (195*0].

form MBS-4H

uicomm-oc

u.s. department of comme?

NATIONAL. BUREAU OF STAND*

PHOTONUCLEAR DATA SHEET 361
PHOTONUCLEAR DATA SHEET 362
Ref. S. DeBenedetti, U. Farinelli, F. Ferrero, R. Malvano, G. Pelli, Elem. Sym. A Z

C. Tribuno

Nuovo Cimento 6, 682 (1957) Bi 209 83

Method Betatron; neutron yield; radioactivity; ion chamber l(ef. No. 57 De 1 NVB

Reaction

Bi209 (7,n-yh

E or AE

Bremss.

10-30

ad E J

tr Notes

E

q in energy

Isomeric activity of Bi.208 ms

.

—, "aUr.n-r - )*,*3> Excitation Curve —***ai(T.n )*“8i Excitation Curve

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

o

form NBS-418

( 8- 1 - 63) USCOMM-OC 18598-P63 PHOTONUCLEAR DATA SHEET 363
U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

form NBS-418

(8-1-631 USCOMM-OC 18SS8-P63 PHOTONUCLEAR DATA SHEET 364
Ref. G.N. Zatsepina, L.E. Lazareva, A.N. Pospelov

Zhur. Eksp. i Teoret. Fiz. 52 , 27 (1957);

Soviet Phys. JETP 21 (1957)

Elem. Sym.

Bi 209

Ref. No.

57 Za 1

£3

Method Synchrotron; emulsions EGF

Reaction E or AE s

a d E J Notes

Bi209

( T,n)

Bremss,

18.9

' - /' '.'ciViV; FlC. 2. Fncrev iislritujtion of photoneutrons trom Bi.

J i I

Neutrons measured at angles 50°, 90°. 150°.

V

Y

.si wi

F* . >. ^oec train of photoneutrons e»ni!t»*'l ?mrn fli

Relative neutron \tel«l« a 1 different energies at 3^, an*

I

direction of the \-rav beam i |»*r unit *«oli«i ancle)*.

Energy

interval, mrv.

to the

•. I 7 t

* The neutron tie id at 90° is taken as unity. The errors

statistical errors. sho* n are

form N8S-418

(8-1-63) USCOMM-OC 18858-P83

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

PH0T0NUCLEAR DATA SHEET 365
Ref. W. Bertozzi, F.R. Paolini, C.P. Sargent

Phys. Rev. UO, 790 (1958)

Elem. Sym.

Bi 209 85

Ref. No.

58 Be 2

Method MIT linear accelerator; time of flight

EH

Reaction E or AE <Td E J * Notes

Bi209

( Y,n)

Bremss. ~ 1^.3 ~ 15.8

Detector at 120

form NBS-418

(8-1-S3» U9COMM-OC 18BS8-P83

Kir. 1 Fncrcv spectraof photoneutrons from Bi

for liremsstrahlune of maximum enereies ~14.3

\Icv ami — 1 5 X Mev,

and ifiiTerence spectrum.

PHOTONUCLEAR DATA SHEET 366

U.S. DEPARTMENT OF COMMERCE

national, bureau of standards
METHOO

L. Katz, G.B. Chidley

Nuclear Reactions at Low and Medium Energies (Academy of Science,

USSR: 1958) 371

Bi 209 83

Betatron; neutron cross section; BF^ counters; ion chamber monitor

REF. NO. 58 Ka 1 NV3

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANCLE

TV PC MANGE

G,XN ABX 8-22 C 8-22 BF3-I lAPI

T a 5 a u u a 2 Hopom uenycKaHUA 'pomoueumpoaoe

Haoron Bn. Mm Bm. Mm |j

tl

IlaoTon .Sm Mm Bm, Mm

V*l 11.16

II 20.5 I L130 8.81 16.1 . Mn» 10.14 19.2 priu 9.46 17.6 Co3® 10.44 18,6 || Tb 13® 8,16 14.8 As75 10.24 13.1 || Ho165 8.10 14.6 Y»9 11.82 20.7 Tm^ 8,00 14.7 i\bu 3.86 17.1 l| Lulls 7.77 14.2 Rh103 9.46 16.S Ta.oi 7,66 13,8

J

127 9,14 16,2 ,| Au-®7 7,96 13.3 Csiaa 9.11 *“

i

! 7.43

t

14.5

THRESHOLDS

He npuneiioHU, nocKOJibKy OHu.npciu>iuiaiOT 22 Msa bo bcox cjiynaax, Kpov.e

30JI0T3, jijih KOToporo 53J, =2l AIju. CconcTiia cc'ieimii ®c(t) cbc^ohm3 TaS.T.,^, - - Taojiima 1

Hsotob Mm •i» (S7

). A»P** r, Mm i“. Mm • 6oj>h r<22). 10* HrOmpoH/100 p • moa*

V»1 18,4 0.062 5,2 0,33 1,62 Mn*» 20,2 0.060 7.0 0.39 2.01 Co3® 18.3 0,068 6.3 0,44 2.30 ; As7* 16.4 0.090 9.5 0.74 4.25 Y89 17.1 0,172 5.2 0.93 • ,5.33 Nb« 18,0 0.156 7.5 1.17 6,80 Rh10S . 17.5 0.160 9.4 1.40 8.28

jin 15,2 0,273 6.8 1.76 11.9 Csiaa 16.5 0.238 7.7 1.59 10.7 Law# 15.5 0.325 3.8 1,55 11.2 Pr>« 15,0 0,320 4.9 1.93 13.1 Tb13® 15.6 0,274 9.8 2.49 18.1 Ho16* 13.5 0.305 8.9 2,52 18.7 Tm18® 16.4 0.250 8.4 1,91 14.9 Lu175 16,0 0.225 8.4 . 1.90 23,0 Ta>*i 14,5 0,380 8.5 3;15 22.0 Au197 13.8 0,475 4.7 3,04 22,6 Bi708 13,2 0,455 5.9 2,89 23,2

mj-io 1

Phc. 17.

a — Bhixoji (foTOHeftTpoiiOB a.m III, 6 — i.fEj)

«c<i) ajIH B1 •obm N 3S-418 MV. T.I4.MI l-.COUM.OC 1* Aft i A Sr, l c i

u.s. DEPARTMENTOF COMMERCE

NATIONAL 3UDE1UOB , T A ,M C - a G i PK070NUCL2 367
Ref. V. Emma, C. Mi lone, A. Rubbino, A. Malvano

Nuovo Cimento 17. 365 (I960 )

Elem. Sym.

Bi 209

Ref. No. 60 Em 1

83

Method Betatron; emulsions

JHH

Reaction E or AE a d E J Notes

Bi209

(Y,n) Bremss.

30

S 9*eV>

^ 3. - rooptniOD between the experimental obtained at ^^-18.9 (*). JSC) and 3d \feV after iionnaiiaarton in the energy range *»<£.',. *i MeV

I

* « a •

1 !

o Peseta

• fle'eretce'S'

(4*4*5!HW

-i , :a4)MW AJ

.V» M» 90* «0» ISO*

l i-. 1-.1

• 4 Kt|wrimrntal angular I lull- ilciluif

r:'"' 1..11 <d •hotoneutroae from

«

• I’l Inn - n •• • I I 1 . I

For (iKEa£5)MeV, neutron energy group,

l(9) = Arf-B sin2

0, where B/A ~ 0.7

j Brty.nl| 60* 90*

. J

1 !

J 2 4 6 0 0 V I V .! V. 2 4 6002468024000246

*'*• 1. Knerier »pertru'of ftie phntoneut ron* from Bi *t anirtai 0=.1<V, HO’. *)•

' 4,M* irtiy' T*1*® nmfinuiMW rurv* i« the calculated evaporative •pecrrum nee t*\

M. \ Hu.

\f.-V 1

:

Mr- V . „M» .t

M. V

'If V • *

'If V

wlli’lth 1«*r ill* TATUMI* BMIIOB

_ : 1 « 1 • »- - •• r«

1

1 1• i 1 « • 1 Miiciil roll

,

1 ‘-.t 'I » I

! ** 1 ir.il

I

• . Jii ill..

h \ i« rift,. i,f ti

I lll-nrv 111 1 1 1 1 !• 1 1

• •• n -1 |1.||»

1 1

K. 'II.V4. .1. t «.»Lf>KN nKKn. I*. H. SUITH and I.. MlUfIKZ: .Vnopo I'imr > •* I *1 *.<*!.

••• I. II. r.uVKM and W. TmrHIMTX: Pntr. Pki/t. Ser.. 71. *13 1193*1. l"l J. H. lanvr.n and W. Tl Ki lllMtt: Pier. /*»»«. *«».. 71. Hit 1 1*3*1. (”p A. J. Rr.nuas and K. I.. r»»a. Rrr.. M. *3 (l*M>.

,'•> F. F ennt:n». R. UurtMi, E. Suva. J. Uuuaiwi and G. Mnacari: .V

/•**».. 10. 423 I l*3B|. form NBS-418

is-t-eal uicomm'OC tesse-pea

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

PHOTONUCLEAR DATA SHEET 368
REF.K.N. Geller, J. Halpern, E.G. Muirhead

Phys. Rev. 118, 1302 (i960)

£L £M. 5TM.

Bi 209 83

METHOD

Betatron; neutron threshold; ion chamber

REF. NO. 60 Ge 3 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

G,N N0X THR C THR BF3-I 4>PI

THRESHOLD

Table I. Summary and comparison of neutron separation energies inferred from present threshold measurements with values predicted from mass data and reaction energies. All energies arc expressed in the center-of-mass system in Mev.

Unu'lilMI No. runs l'resenl results Other results Method Refcrenca

Bi»(r^.)Bi** 42 7.432±0.010(calib) 7.430±0.050 LSA

•J. R. Huiaensa. Physics 21. *10 (1955).

FORM NBS-41S

(REV. 7-14.641 USC OMM.OC 26 0 1 0- PS

4

PHOTONUCLEAR DATA SHEET 369

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAN r Af*OS
Ref. LoA« Kul 'chitskii, V. Presperin

Zhur. Eksp. i Teoret. Fiz. 3%, 1001 (i960)

;

Soviet Phys. JETP 12, 696 (1961)

Elem. Sym.

Bi 209

Ref. No.

60 Ku 2

83

Method

90 MeV Synchr.; proton recoil counter telescopes JH

Reaction E or AE s

ad E J * Notes

Bi209

OY,n) Bremss.

;

E =90M. Ttnax

IeV Relative yields in table are per

nuclear neutron.

Element

Relative

neutron yield .( Element Relative neutron yield

Li 1.00=0.05

II

! Cu 0.37 =0.i C

Be 1.22=0. o'.» ji Cd 0.35=0.1 : 0 0.7i=u.u.j I u. A1 0.49=0. (.'3 Bi 0. u =').'„ Ca 0.33=0.' 2

form NBS-418

(0.1.43) USCOMM-OC 10O96-P63

U.S. DEPARTMENT OF COMMERCE

JATIONAL BUREAU OF ST AN O A R 03 PHOTONUCLEAR DATA SHEET 370
Ref. K. Reibel, A.K. Mann

Phys. Rev. 118, 701 (i960)

Elem. Sym.

Bi 209

Ref. No. 60 Re 1

83

Method Y's from F

19 (p,ary) reaction; protons from VandeGraaff; AnI. JHH

Reaction E or AE

S

crd E J Notes

Bi209

(Y,Y) E

p= 2.05

E =2.40

P

Sy - 6-9

\ - 7-1

7/2

9/2

11/2

= I 7.5 ± 1.5 mb

D (average level spacing based

3.9 ± 3.7 kev

3.1 ± 2.9 kev

2.6 ± 3.5 kev

tyjTy - 0.5 ± 0.2

r = 2.5 ± 1.5 eV

f

Y0

= 0.75 ± 0.5 eV

= 12 ± 2 mb

< (5 y = 10 ± 2 mb

= 19 ± 4 mb

on j)

form HBS-418

tS*1-«3> USCOMM-OC 18836-P63

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 371
a I M. R.G. Baker, K.G. McNeill

Can. J. Phys. ^2, 1158(1961)

METHOO betatron; fast neutron yield;

threshold detectors; ion chamber

angular distribution; A1 and Si

Bi

REF. NO. 61 Ba 2

209 85

NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE*

G,XN ABY THR-22 C 22 THR-I 3-+ DST

G,XN ABY THR-22 C 22 THR-I 5-+ DST

In Tables 2 and 1+:

a = average cross section of detector

weighted with neutron spectrum

* "5-+" is the

Aluminum and

detector range of

"5-+" of Silicon.

$ = neutrons/100 roentgen/mole

00 W(0) = -aQ y

(1 + A

n

P

Q

(cos 0)]

n=l

TABLE II Normalized yields for aluminum detectors

Element

AK*<t) reaction Al(n,p) reactions

30# 90* 150° a, 30° 60® 90® a, a, (ff*)*X10*

Bismuth 399 567±130 620 541 ±85 3632 5 139 ±290 3168 4366 ±185 0.06 ±0.06 -0.35 ±0.1 17.76 478 423 ±130 841 484 ±85 2562 5353 ±290 2955 4144±185 —0.05 ±0.06 -0.53 ±0.1 16.87 Lead 428 312±120 725 429 ±77 3123 5754 ±2G0 3154 4591 ±166 —0.004 ±0.05 —0.51±0.07 18.68 Tantalum 378 367±190 CSS 441 ±122 2757 3024 ±425 2088 2757 ±275 0.14±0.14 —0.19±0.17 11.22 Lanthanum 208 222±110 330 243 ±70 2139 3371 ±250 1891 2768±160 0.05 ±0.07 -0.43±0.10 11.27

Arsenic 77 100±50 108 97±32 788 937 ±115 764 865±74 0.02±0.11 —0. 16±0. 14 3.52 Copper 13 65±30 70 55±20 710 748 ±70 569 700 ±45 0. U±0.08 —0.14±0.11 2.85

•(#) m 4.07X 10*m milUbarn-aeutron. TABLE IV

I II III IV V VI VII Element at «* (a*)X 10»* 4>im.i(22 McvJXIO®

Vanadium 2451Cl ±0.06) 0.01±0.08 -0.00±0.10 6.05 0.21 0.12 Chromium 1841[ 1 ±0 . 03

)

0.04 ±0.04 -0.05 ±0.05 4.05 0.17 0.10 Manganese 308(1±0.02) 0.07 ±0.03 —0.09 ±0.04 7.61 0.25 0.12

Iron 200(1±0.03) 0.05±0.04 -0.17 ±0.05 4.94 0.18 0.11

Cobalt 3901(1±0.02) 0.08±0.03 —0.22±0.04 9.63 0.26 0.15

Nickel 145

1

C 1 ±0 . OS

)

0.07 ±0.07 -0.23 ±0.09 3.58 0.12 0.12 Copper 3471[1±0.02) 0.05 ±0.03 -0.29 ±0.04 • 8.57 0.30 0.12

Arsenic 4821 1±0.03) 0.11±0.01 —0.24 ±0.05 11.91 0.33 0.15 Rubidium 6381[1 ±0.05) 0. 13±0.0G —0. 14±0.08 15.76 Strontium 409(1±0 05) 0. 10±0.06 —0. 17±0.08 10.10 Yttrium 2901[1±0.10) 0.08±0. 12 —0. 12±0. 15 7.16

Silver 5901[ 1 ±0 . 04

)

0:10±0.06 -0.22 ±0.08 14.57 0.87 0.07 Cadmium 9051 1±0.02) 0^02 ±0.02 —0.26±0.03 22.35

Iodine 1 133 <;i±o.03) 0.04 ±0.04 -0.29 ±0.05 27.99 1.42 0.08 Barium 10481;i±o.o4) 0. 10±0.0G -0.38 ±0.08 25.89 Lanthanum 1595 ( I ±0.02) 0.02±0 03 -0.42 ±0.04 39.40 1.04 0.15 Cerium 1316 < 1±0.05) 0 . 05 ±0 . 00 —0.39±0.08 32.50 Dysprosium 1652 ( 1±0.0S) 0.04±0 10 -0.34 ±0.13 40.80 Tantalum 1558(;i±o.o2 ) 0.04±0 03 -0.22 ±0.04 38.48 2.50 0.0G Tungsten 1365 (!l±0.02) —0.07 ±0 03 -0 24 ±0.04 33.71 Mercury 1345 (|l ±0.02) 0.04 ±0.03 —0.31 ±0.04 33.22 Lead 2274 (:i±o.oi) 0.02 ±0.02 -0.42 ±0.03 56.17 2.72 0.08 Bismuth 2162 ( 1±0.02) 0.05±0 03 -0.45 ±0.04 53.40 3.36 0.06 Thorium 3031 (1 ±0.04) 0 0G±0 05 -0.32 ±0.07 74.87 Uranium 4630(1±0.02) 0.05±0 03 —0. 17±0.04 114.36 •(#) » 2.47X10* «• millibarn-ncutron. Errors are standard errors due to counting statistics only. form NBS-418

(REV. 7*1 4*641 USCOMM-OC Z*OtO.P«4 PHOTONUCLEAR DATA SHEET 372

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
REF. A. Busslere de Nercy

Ann. Phys. (Paris) Third Series 6, 1379 (1961)

ELEM. SYM. A

Bi 209 83

METHOD REF. NO.

61 Bu 4 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 10-25 C 22 NAI-D DST

I f rrp«v. •enUnl In (Kliont rli

care* |ire- run par U

relation <1* iliipmlni.

fig. li. — 3ar> i ii(W rllnrr j diO^rralulW I tl« ilifliaaina

(T. V * «**• pour la bi*. roulh.

I

T« Bi

fi*. > 7 - — l»i»lrilnilion aiiKtilairr dr. plmlon*

iliffiiar. par Ir lanlale <n\ rl Ir lu.mulli (h) (m-mi MrV).

form N3S-418

(REV. 7-14-64) USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 373

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Ref. H.G. DeCarvalho, A. Celano, G. Cortini, R. Rinzivillo, G. Ghigo

in ifl-» t %

Elem. Sym. A

Ref. H. Crannell, R. Helm, H. Kendall, J. Oeser, M. Yearian

Phys. Rev. 12^, 923 (1961)

hlem. Sym.

Bi

A

209

7.

83

'

Method Linac; Cerenkov counter telescope

.no. 61 Cr 1 ; JHH

33

fHH

Reaction -7—

a

»—

r

(e , e )

E or AE

183 2.60

4.30

form NBS-41S USCOMM*OC 1I88«*PIS

S°

dE J 3/2 +

Notes llQfjo

1/2 +

Measured y transition rate F :

1 m

r =(l.5±0. i<-T)X10

11

sec’

1 if l|P= PG - rJr

sp - *-2iX1-

r = (6.0±1.9)Xl0U

sec‘

1 If m 1?- 3/2

0 - Vr

sP * U0- 0±54'

T =( 9 .T1^±3 .

1<-)X10

8 sec

‘ 1 if I^=17/2 m

“ G=rjr= 27.4*9.6

m' sp

T =(8.7513. l) XlO^sec”

1 if lf

4

=l/2. m s g = r/r = 269.019.5.

m' sp

Fits R = 1.20 fermi.

o

I (^sp

= s ^-n8^e "Part^c ^ e estimate °f

i the y transition rate).

Fit;. 17. Fncrgy-ievel

diagram for Hi--5* showint; the known excited

states below 4.5 Mcv. * 1/2 1 The s|dn assignments in brackets are the lowest values compatible with

the assigned transition

multi|K>larities. It is ex- (3/2*) pectcd that the electron excitation process may

excite groups of states with an energy spacing

less than about 200 kcv. 7/ 2

“ The consequences of ex- citation of groups of

states, unresolved in the 9/2“ present experiment, are not incorporated in the diagram but are de- scribed in the text.

1

E4

4.30

3.78 3.3

2.62

1.62

0.90

?#

E3

Bl 209

: *

rs

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3 T A N O A r-

' * ERCE

5AROS PH0T0NUCLEAR DATA SHEET 374
form NBS-418

(8-1-03) USC OMM-OC 18856-P03

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 375
REF. J. Miller, C. Schuhl^ C. Tzara

J. Phys. Radium 22, 529 ( 1961)

EL EM. SVM.

Bi 209 33

METHOD

Positron annihilation; neutron cross section; BF_ counter;

ion chamber

REF. NO.

61 Mi 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G ABX 10-21 D 10-21 NAI-D 10-22 DST

G,XN Hbc, ABX 3-22 D 8-22 BF3-I 4PI

asi mo/ster

Flo. 8. — Section efficaco totals de diffusion dlastiquo et module au carrd do 1‘amplitudo do diffusion vers l'avant. Cas do XI, Pb at 3i. Gerdes vidcs : module au carrd des amplitudes do dif- fusion absorptive calculdes 4 partir des sections efllcaccs ®}Y. n) *f 2o(y, 2n) -f o(r. np) + . .

. (seulo la prcmidre

reaction intervient vers (H MoV).

Gerdes plcins : limiles {Z*1/Af *)* da In section efficaco do diffuiion 4 haulo anergic. En rialiU, a cau.se des inter- actions mdsoniques des nucleons et <le l'incertitudo sur

la limits 4 haute dnorgio do la diffusion, il v.,ii<i.-...lu.icux parlor do la section efficaco do diffusion vers r..v;»r.t au

dol4 do la resonance geanto et avant lo souil pUtomdsoniquo ; on pout monlrcr quo 1‘exprcssion

(Zo»/Afe*)* (l -r 0,8i)»

oft x eat Infraction do force d'dchango ontro nuddous, ost mieux appropride.

£n pomtillds : rdsultats do Fuller ot Hayward.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

NUCLEAR DATA SHEET 376
i-”hm NBS-418 uscomm«oc taose^Pea PHOTONUCLEAR DATA SHEET 377

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS
Ref* T. Tohei, M. Sugawara, S. Mori, M. Kimura

J. Phys. Soc. Japan 16, 1657 (1961)

Elem. Svm.

B1 209

Ref. No. 61 TO 1

85

Method 25 MeV betatron; photon scattering; Nal(Ti) spectrometer;

ion chamber NVB

Reaction E or AE ad E J " Notes

Bi209

(7,7) Bremss,

5-12

8.0

References

1) E. G. Fuller and E. Hayward: Phys. Rev. lOl (1956) 692.

2) see E. Segre: Experimental Nuclear Physics,

vol. 1, p. 346.

3) J. S. Levin and D. J. Hughes: Phys. Rev. lOl (1956) 1328.

4) K. Reibel and A. K. Mann: Phys. Rev. 1X8

(1960) 701.

Detector at 120

Table II from J. Phys. Soc. Japan _l8,

17-22 (1965)

ao -

30 L

2C -

tO

not

4 •C :©

Fiif. * The elastic scattering cruse section* photons. -4: data from Fuller and Hayward11

. ~ data from monochromatic .-rays* . * : •" - - by pb- The arrows indicate the positions of p) and n threshold energies of

isotopes. Numbers l. 2 and 3 correspond to Pb-* Pb**7 and Pb***. b : *r. 7) by Bi. The arrows indicate he pontum* . p and n. threshold energies of Bi*»-

form NBS-418

<8-1-631 USCOMM-OC 18996-P63 PH0T0NUCLEAR DATA SHEET 378

U.S. DEPARTMENT OF COMMERCE

NATION M. BUREAU OF STANOAROS
Ref. A. Wataghin, R.B. Costa, A.M. Freire, J. Goldemberg

Nuovo Cimento 19. 86k (1961)

Elem. Sym.

Bi 209

Ref. No. 6l Wa 1

Method Betatron; emulsions (proton recoil tracks)

JHH

Reaction E or AE <7d E J n Notes

Bi209 (y,xn Bremss.

22

Neutron spectra at 50°, 90° and 150°.

l(0) = A + B sin2

0 + C cos0, where

B/A, C/A are given in Table 1.

B/A has peak at ~ 5*5 MeV (En

).

Ki*. ik. - Smnn *o*t*t «(**ir.in. I K-ill I in* i* *|<*tniro.l form NBS-418

<S-1-83» USCOMM-OC 1SSS«.P«S TABLES ON PAGE 2

Kitf. 1. - H A m • function of th« n«ut run ewritv <>n the Miiaiph'ta that the .tiurnia'

ilintri hill w»n l\*h »• »lcannh*e4 l»v the f«»rmuU #i«* ** .1 -II •in* H-r ?tm h.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

PHOTONUCLEAR DATA SHEET 379
Method Ref. No. 61 Wa 1

(*) H. L. POS3: Phys. Rev., 79, 339 (1950).

( s

) F. Ferrero, A. O. Hanson, R. Malvano and C. Tribcno : Nuovo Cimento,

4, 418 (1956).

( J) G. X. Zatsepina, L. E. Lazareva and A. N. Pospelov: Soviet. Phys. J.E.T.P

5, 21 (1957).

( 4

) V. Emma, C. Milone and R. Rinzivillo : Nuovo Cimento, 14, 1149 (1959).

( s) V. F. YVeisskopf and D. H. Ewing: Phys. Rev., 57, 472 (1940).

(*) R- s - 'White: Section 2-D, in Fust Neutron Physics, J. B. Marion and J. L. Fowler ed. (New York, 1960).

( 7) F. Tagliabue and J. Goldenberg: private communication.

C) Cr. A. Price: Phys. Rev., 93, 1279 (1954).

(*) G. Cortini, C. Milone, A. Rcbbino and F. Ferrero: Nuovo Cimento

.

9, 85 (1958).

vol.'ll p.‘ 2B

96.KlXSET: °f EllCycU>Vedia °f PhyTM*' ed- by S. Flugge (Berlin, 1957),

( ll '* EMMA’ C- lriL0XE' A- Rubbin‘0 and R. Malvano: private communication.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

form NBS-418

(8-1-931 USCOMM-OC 18556-P63 PHOTONUCLEAR DATA SHEET 380
Ref. 0. Bore llo,- F . Ferrero, R. Malvano, A. Molinari

Nuclear Phys. 53 ( 1962 )

Elem. Sym.

Bi 209

Method 31 MeV betatron; threshold detectors: A£(n, or), Si(n,p) JHH

Reaction E or AE <7d E J

rr Notes

Bi209

(Y,n) Bremss.

30

0.

03 -

0.2 -

0.t

_1_ 0 53 sTs a

Nautran Cnarpy n>r«»hoid

Fig. 1. The weighted means of the ratio ajfa.+a,).

• I

• Al («.•)

• S > pj

f(9) /

0 71*0 <3 cm 0 -O 2):m 29

•0«*0 29 esi 4 0.t7c*»2®

Fig. 3.

80 55 la so 3o 5

rhe neutron angular distribution iiwfnuU/e<t at 'JO

-*

Tabu: 2 Values of f(d)

Ud*. Ca*i Neutron energy E,(McV» t\Q) -= a9 -a, c >s0 -<i, o ib :d

c 3.3 0.35—“ *>7 it 7J -ii i *; c,., /J _ii j»; ib jf K j 33 0 05—o.i*3 “ 7n - “ “3 nit 0 -n Hi... » :•) c 3

*9 0.23 : 0(W «» 77 - *»i»7 - 2W

t : 3.5 0.14 -<» ll “ 7*5 - “ 12 t .,/> 23 v. b 2V v k 3 < £, < 11 l.l -3 0.54 - iiWuwd — *>.-*•* e.»

- n > 3 0 35—0.10 0.71 -*l 12 cu»9 3T - J) o 5.5 — 0.02 — “ *»9 V 73 -mil v.w :»

H

-“22 b 2V

11 ' P > 3 0 31 -•» 25 il 7ft — 0 Hi o is V 24 o A

: * 0 30 = “ “3 V 02 -•* 2“ C' >

U

17

1 Table 3

.* - Values of the weighted mean for the ratio <*i/(<*o+ a*)

Neutron energy (MeV) f

“l ) E* \a0 +a,/m«*n s 3.5

' 0.10±0.09

£ 5.5 0.18^0.04

£ 8 0.38i0.03

References

1: V. da Sabbat*. Nuovo Cia. It (1999) 223

21 S. Fa|ii aad 0. Saguaota. Naovo Cia. 12 (1999) 919

2) T. Ericas ud V. StruOaaky. Nudav fbyva • (1999) 29*

«) A. Udiaart. Not Cia. It (1990) 199*

9)

K. L. Pea. Fby*. Ru». 79 (1990) 999

9) C. A. Price Pbym. Rav 91 (1994) 1279

T) P. Farm. 0. A. Kuaa. R. Malvaaa aad C Tribaao. Nuovo Cia. 4 (1994)

9) G. 19. Zataopiaa. L. E. Luum aad A. N. Poapalby. JETP (Soviet Phyrica )9 (1997) 21

9) G. N. Zaaapaa. V. V. Ifoaia. L. E. Laaaiuva aad A. I. Ltpaatkia. Compt. Read, du Coocra

tafai liail da Phyriq** Naddain 1999 (Duaod. Pana) p 194

10) V. Baaa aad C. Mikaa. Nuovo da. 17 (1990) 9*9

111 P. TabUabaa aad J. Goldambaiy. Nadav Phyriea 23 (19*1) 14*

12) A. Watafhia. R. B. Coata aad J. Fnldiahin. Nuovo Cia. 19 (19*1) 9*4

19) G. C. Rdabardt aad W. 0. Whitabaad. Ball. Aaar. Pbym. Soc. 4 (19*1) 291

141 Wbitahur aad Robiaaus. Tba Calculw o< ObarvaUooa (Bladda aad Soa Ltd. London. 1999)

11) A. G. do Ptnbo Filho, Nadav Ibiydra 19 (1990) 271

19) J. OiMvi ban. P. Dyal aad J. O’CoaaaL prtvmta caaaaakatiaa (1990)

- 17) J. Bkhlar aad H. A. Waidaaaullar. Z. Mr Pbym. 132 (1999) 991

19) J. Savicki. Nadav Phyuks 9 (1999) 999

19) L. A. Xd'ddtakli aad V. Piuupana. JETP (Soda Phyufcs) 12 (1941) 999

90) G. E. Braoa aad 3L Boktarly. Phys. Bar. Lao. 1 (1999) 479

21) H. W. Sckiaitt aad J. Hdparia. Phys. lav. 121 (19*1) 1*7

' t*1'Bktaa asd UdMU. Caa. J. ad Phys. S* (1*91) 1199 - 211 Idakaidt aad Whttabaad. fdvav - 7

'

FORM NBS-418

(0-1-63) U3COMM-OC 1S096-P63

u.s. department of commerce

NATIONAL BUREAU OF STANOAROS

PHOTONUCLEAR DATA SHEET 381
>xt« «1>« fur 'cat. r*i«Mraa A*ib«m** P» "v^^*.,8*

ir •«< .1nin'i Pw

Ref 5 : Ejuller & Hayward - Pltys. Rev. 101 . 692 (1956)

Ref 5

: - Reibel & Mann - Phys

701 (I960)

Rev. 118 ,

r mui 1

( ihxcrvc.l ir.t:i>;r. t v»u»nN «.orrccicJ for w-cwiromc .ih*o<piii<n

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS

form NBS-418

(8-1-63J U3C OMM-OC 18096-P63 PHOTONUCLEAR DATA SHEET 382
kef. J. Miller, C. Schuhl, C. Tzara

Nuclear Phys. *>2j 23

6

( 1962 )

Elem. Sym.

Bi 209 83

Ref. No. 62 Mi 3

Method Linac; monoergic photons by e annihilation in flight; Nal

JHH

Reaction E or AE

-22" S

<7 d E J * Notes B^Y,*n) 8-22 14 . 0±0.5 J* = 3 . 73±0.06

'

0

MeV-b

FORM NBS-418 USCOMM-OC I 83S8-P83

Fig. 12 Section cfficace

<r » a(y, n) + <r(y, np) -t- 2o(y. 2n) + . . . pour le bismuth.

'<. . :.T .t' • TT •

• • 4

*. •• •• *7

l •.( .. ••

l

1 rj

1 ' » . * 1 T

n:i u 11

I

»

.1 ! » •

. u if .1 :.i «••«» i-»:

* iatc^i.ix

J

. : I >i JU.VIU .1 f- •* *’•» •• McV |w»ur * -I - ^ l*’“ r l -* ' M . -3. , r I . • It.. 1 iti l» min- put. h - ••rr-tifN ui.!i*| »•«* ' * >'

U.S. DEPARTMENT OF COMMERCE

national bureau of standards

PHOTONUCLEAR DATA SHEET 383
Ref. G.C. Reinhardt, W.D. Whitehead

Nuclear Phys. JO, 201 (1962)

Method 55 MeV betatron; synchrotron; Si^(n, p)Al28 activity; Cu^3(7,n)Cu^2

monitor.

Elem. Svm.

Bi 209 85

Ref. No.62 Re 1 EGF

Reaction E or AE

s

ad E J * Notes

Bi209

(Y,n)

Bremss.

55

a

Fig. 5. Angular distribution of fast neutrons fr..m l>i>mutii %uth

target I. Dotted curve i* of form .«, .a. «.•••• 0 4| .Sjlkl cur\*c is .*f form a, - a, ••»»(* a, v.-s* o krr«>r» .it points are statistical errors in counting ..nl\

0

I ig •» Angular distribution of fast neutron* from bismuth srith target J. Sec fig. 5.

I’.ir.mu-tc-rs of tin- ill 1 . 1. I- • • \|- • .... . . >. . f. Ml, ; o 1

1

1 l thv tit 3 lor * tii- • \|iri «mn. a, - U| cob 0 <i| cos <,c.is‘(l.

Mi- 1 III. 2 ; I* \

,

' l |

1 1, /*, •1 ,/', - f —-

i ;t . i > Mi 2

- I'r \u \ Ilo l

| .HI o o|

*, O |.» • 0.1 •»l* -o Of '• IT O "l II 1 1 II II 1 II i *

•• o | l

• o on l tif - o 02 1 IM»~ll Oj l o| ;

ii 03 o •**-•• 02 l.oo - o oj 100 -0 02 1 "l .. iii

1 IM. •I ll<l .1 .. ... .. 1 . |||| . • (1 1 IN, o ;t!» IMM» o f'J ^ o llj o IT -o oT o j! L o .*T o oT ^o on •J hi =

o 0*1 o|2^oo.', o IT - 0 O', "

1 II

.. .N. I.,| •. o| '» •*»

*1 o .16 - 1» 1

1

0 3 T -0 |.*» o .To :

ii 16 0 o.l-o 12 o 13 _o 20 • • 33 -OI 2 •• *T - «• 1 i

1 H . II II. " " " ' " *'* o 04 1, • IT ...1 1 * •• ti.l -o 2* -o IT - o 2.» o 3 t-o IU o o.l — o 32 003-0 |0 -0 IT -0 IT

. o ..I • IN, " " •'* II II

I

0.1 ..... .... " ' '• i.| II • Mi

1, • ••II •• l.» n -3 •• 1* o 13 -o 2o o 2T-o 13 0 1.T-0 11 0 on -0 13

• IM. I. to - •• ON " H " o J I OO. O I . M|| •• It OIK, O I Mi l,*l o 4.» - U ••*.> •• JH =

»* II o :»:• • o »2 O 03 -0 ••!* IM6.0 u| t» 2 » ootl •• 3 T • • no

'• |.f - • 0.1 O |S O II

t

o IT •• Hi " ii o o.i o i : MIN. II | J O l»] O I 4 • I o.l

1 j •: — o 08 -O 08 0 02 -O || -o tm-o 12 o 13 -O ort o o2 -u iy 0 01 -0 06 -0 ••* 0 118 HI g

tli.lt 1. 1

| 1

•' Kcnormalizetl -> that 4 # - 1

1 form NBS*418

(8-1-63) USCOMM-OC 18586-P63 PHOTONUCLEAR DATA SHEET 334

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Ref. F.Jn1, K*ltla, V. Stela, D.C.Sat

Vh7a.lrv.Zatter• IQ, 299 (1963)

Elem. Sym.

Bi 209

Ref. No. 6Mal

83

Method e(r

Reaction E or &E ad E J n Notes

(7,T) 5^5 (350 KeV) Qeasl-elaatla scatterinf « pear

reeelatlea ef pbetsa; dataster did

high tatrfj laalaatle

•laatla seattaring* 71g* 1J5

#

qoaal-elaatis areas

Optical model considered.

form NBS-418

<8*1*631 USCOMM-OC 188S6-P63 PHOTONUCLEAR DATA SHEET 385

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Ref. g.c. Barber, J. Goldemberg, G.A. Peterson, Y. Torizuka

Nuclear Phys. kl, k6l (1963)

Elem. Sym.

Bi

Ref. No.

209 83

Method Llnac (Standford Mark II); counter telescope

63 Ba 1 BG

Reaction E or AE ad E J n Notes M.5 Ground state 9/2

No resonances.

Detector at l80°

</* </> 2 y 4

GIANT resonance region

ELASTIC PEAK

40 *1

IS 20 22 24 2ft 28 30 32 34 3ft 3ft M«V

Fif. 19. Spectrum of 41.5 MeV inelssticslly scattered electrons from ft BI"* target.

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANOAROS

form NBS*418

(8*1*63) USCOMM'OC 18956-P63 PHOTONUCLEAR DATA SHEET 386
I FORM NBS-418 U.S. DEPARTMENT OF COMMERCE

(8*1-63) NATIONAL BUREAU OF STANDARDS

U3C OMM'DC 188S8-P83 PHOTONUCLEAR DATA SHEET 387
(

Ref- Co So Young, D.J. Donahue

Phys. Rev. 1^2, 1724 (1963)

Elem. Sym.

Bi 209

Ref. No. 65 Yo 1

83

Method 200 kW pool reactor; monoergic y's from (n,7) in Mn, Fe and Cu;NaI

JHH

Reaction E or AE <7d E J n Notes

Bi209

( Y,Y)

6. 0-8.2 Measured a (elastic scattering)

values in Table II; interpolated to

7 MeV in Table V.

Table II. Total elastic scattering cross sections (mb).

Source element

Energy

Interval (MeV)

Source

energy (MeV) Ta(lJ)

Target

(thickness

in cm)

Hg(3) Pb(0.6) Bit 1 .3) Ti 5.0-7.0 6.41 6.75

0.6 ± 0.4 Mn 6.0-7.5 7.26

7.15

7.05

<0.3 0.5 ±0.3 0.9 ± 0.5 0.8 ±0.4

Ft 6.0-7.6 7.64

7.28

0.7 ±0.4 2.4 ±1.3 125 ±20 2.0±1.1 Cu 7.6-8.2 7.91. <0.2 <0.4 <0.2 <0.2

° Calculated using the intensity of 7.64- MeV y rays produced by neutron

' rapture in iron. I

Table V. Cross sections at about 7 MeV (mb).

i This work Ref. 2 Ref. 1*

* Ref. 3 Ref. 4k Ta <0.3 2 Hr 0.5 ±0.3 3.5 Pb 0.9±0.5 15 17 60 55

Bi 0.8±0.4 17.5 19 35 17

| * See also E. G. Fuller and Evans Hayward, Phys. Rev. Letters 1, 46S

j(!958).

11 Differential cross sections at US' were multiplied by 11.2.

* E. d Fuller and Evans Hayward, Phys. Rev. 101, 692 (1956)

;

Nud. Phys. 33, 431 (1962). . * K. Riebal and A. K. Mann, Phys. Rev. 118, 701 (1960). Tsutomu ToheL Masumi Sugawara, Shigeki Mori, ind

Motohara Kimara, J. Phys. Soc* Japan 16, 1657 (1961).

v

* P- N- Ste“* “d D- C. Sutton, Phys. Rev.

Letters 10, 299 (1963). . FORM MBS-418

(8-1-63) USCOMM-OC 18936-P63 PHOTONUCLEAR DATA SHEET 388

U.S. DEPARTMENT OP COMMERCE

NATIONAL BUREAU OF STANDARDS
U.S. DEPARTMENT OP COMMERCE

NATIONAL BUREAU OF STANOAFT

form NBS-418

(8*1*63) USCOMM-OC 189S6-P63 PHOTONUCLEAR DATA SHEET 389
REF. EL EM. STM. A , Z F.R. Allum, T.W. Quirk, B.M.

Aust. J. Phys. J/7, 420 (1964)

methoo

Synchrotron; r- chamber

Spicer

Bi 209 83

REF. NO.64 A1 4 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N N0X THR-18 C 18 SCI-I 4- DST

(17.5) (4.5-)

!(•) /i

(a)

103° 13 3°

u—f-

!/

43* 73°

(b)

103° 133*

Fig. 1.—Fast photonoutron (>4-5 MuV) angular distributions from bismuth and lead. () Bismuth, /( 0) — 4-3ti — u-i>4 oos 0 — 2-52 coo-0 \dottcd lino); () lead, 1(0) = 4-40 — o - 14 ms 0 — 1-71 cos5 G (dotted line).

No asymmetry about 90

o

form MBS-418 (MV. 7*1 4-34) USC OMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 390

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STAN OAROS
REF. ELEM. SYM. A Z F.R. Allum, T.W. Quirk, and B.M.

Nucl. Phys. 545 (1964)

METHOO

Spicer

Bi 209 S3

REF. NO.

64 A1 5 JOC

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN N0X THR-34 C 34 THR-I 6- DST

I Table 1 Summary of present experimental data at 34 MeV bremsstrahlung

Element _ 5

«# 5

.Be

' 0.43 ±0.02 O.OSiO.O! .c 0.61 ±0.04 o.o9±o.o: i.Al 0.39 ±0.03 0.05 10.01 MTi 0.34±0.02 0.06±0.0l

t«Cr 34 MeV 0.33 ±0.02 0.02x0.0: 22 MeV 0.13±0.07 —0.02x0.01

ft Gu 0.36±0.02 o.ioioo:

0.38 ±0.02 o.iixo.o: »Ba 0.39 ±0.03 o.iixO.o: ,.Ta Before installation of iron shielding 0.26±0.04 o.i3x0o:

After installation of iron shielding 0.27 ±0.02 0.1 2 ±0.0! «Pb target diameter 3.0 cm 0.39±0.03 o.i5±o.o: target diameter 1.3 cm 0.40 ±0.03 o.i9x0.o: uBi 0.42 ±0.03 o.i7±o.o:

Y — a, -+- a, cos 0 + a, cos* 0

form N8S-4U

(RCV. 7-1 4- Ml

USC OMM.OC 2«0t0-P«4 PHOTONUCLEAR DATA SHEET 391

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
REF. Z.S. Anashkina

Zhur. Eksp. 1 Teoret. Fiz. J+04

( 1963 );

Soviet Phys. JETP 18, 279 (WO

tLcM. STM. A

Bi 209 83

METHOD

Neutron angular distribution; nuclear emulsion

REF. NO. 63 An 3 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN ABY 9-85 c 85 EMU-D 1-12 DST

(1.5 " 11.5)

For 1.5 MeV £ E s: 11 .

5

MeV, n

' *

yield = (3.7±0.8) neutrons

mole MeV/cm^

Angular Distributions:

dc/tta tS-Wnvt

ao^r w

JkO-nj Mev

QQo 000\\—±.j .1111 l—j '''1 1 1 1 0 JO SO SO UO ISO no

0. deg

The curves 1 in the figure correspond to leastsquare fitting. It is possible to represent them

by the following formulas:

1.5 — 4.0 MeV : (1.00 ± 0.08) + (0.10 ± 0.08) cos 8

(0,4 4; 0.1) cos2 0 , 4.0 — ll.SMeV : (1.00 ±0.087+ (0.02 ± 0.08) cos0 — (0.7 ± 0.2) cos

2 0

,

1 .5 — 1 1 .5 MeV : (1 .00 ± 0.05) + (0.07 ± 0.05) cos 0 — (0.5 ± 0.1) cos

2 0

.

FORM MBS-41S

(REV. 7.I4.S4) USCOMMoQC 26010.P64 PHOTONUCLEAR DATA SHEET 392

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF JTANOAROS
REF. B. Arad (Huebschmann) , G. Ben-David (Davis), I. Pelah,

Y. Schiesinger

Phys. Rev. JJ2, B684-700 (1964)

ELEM. SYM.

Bi 209 83

METHOD

Reactor, (n,y) reactions source

REF. NO.

64 Ar 1 NVB

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G ABX 7 D 7 NAI-D 13 5 (6.996) (6.996)

Table II. Capture gamma-ray sources and their properties. 4

Source Chemical

composition Masskg Principal y rays (in MeV)

A1 Metal 1.640 7.73 Cl polwinvl Chloride • 0.380 8.55, 7.78, 7.41, 6.96, 6.64, 6.12, 5.72 Co CoO 0.230 7.49, 7.20, 6.98, 6.87, 6.68, 6.48, 5.97, 5.67 Cr Metallic powder 0.480 9.72, 8.88, 8.49, 7.93, 7.09, 6.65, 5.60 Cu Metal 1.860 7.91, 7.63, 7.29, 7.14, 7.00, 6.63 Fe Metallic powder 0.440 9.30, 7.64, 7.28, 6.03 Hg Hg2'(NOi),-2HjO 0.310 6.44, 6.31, 5.99, 5.67, 5.44 Mn MnOj 0.240 7.26, 7.15, 7.04, 6.96, 6.79, 6.10, 5.76 Ni Metal 0.900 9.00, 8.50, 8.10, 7.83, 7.58, 6.84, 6.64 Ti TiOj 0.210 6.75, 6.56, 6.42 V v;o, 0.120 7.30, 7.16, 6.86, 6.51, 6.46, 5.87, 5.73 Y YjO, 0.200 6.07, 5.63

. :-jr more detailed information, additional line*, intendtie*, etc., see Ref. 6.

Table III. Effective cross sections.

’ source Energy

(MeV) Element Protons Hg 5.44 Hg 80

Cl 6.12 Pr‘« 59 V 6.508 Sn 50 Co 6.690 Pr“‘ 59 Co 6.867 Nd 60

A1 6.98 Pb»» 82

Cl 6.98 Pb 82

Ti 6.996 Bi» 83 Cu 7.01 Sn 50

Ti 7.149 pb®* 82 Co 7.201 Pb« S2 Mn 7.261 Pb®* 82

Fe 7.285 Pb®* 82 V 7.305 Pb** 82 Hg 7.32 Pb 82

Fe 7.639 Ni 28 Fe 7.639 Pr‘« 59 Cr 8.499 Cu 29 Cr 8.881 Pr‘« 59 Ni 8.997 Sm 62

Scatterer Neutrons U6, 118, 119, 120, 121, 122, 124

62, 64-70, 72 82

82, 83, 84, 85, 86, 88

126

124, 125, 126 126

62, 64-70, 72 126

126

126

126

126

124, 125, 126

30, 32, 34, 36 82

34, 36

82

82, 85-88, 90, 92

<»tt) (mb) Notes

~128 103 a

14

2.7 a

22 2900 b 346 a 1560 b 1000 b

1000 b

25

25 a 4100 a

12.5 5500 c

10.5 d

10 d

24.4

9.3

2.8 G^he^aMR^). iotroducei1 in the «"••-*** value* because of large difference, in line intensities quoted by Bartholomew and Higg, and by nuclea^”„lection*

C°Untin8 U5ed- which wiU introdu“ * error in estimating <»„> for resonance* having a high

i Segel CPhya. Rev. 125,

; cannot resolve an energy

form NBS-418

(R EV. 7* 1 4*641 U9C OMM*OC 2«010.p«4 PHOTONUCLEAR DATA SHEET 393

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
REF. A. De Marco, R. Garfagnini, G.

Phys. Letters 10, 213 (1964)

METHOD

Piragino

EL EM. SYM.

Bi 209 83

REF. NO. Synchrotron; NBS Ion chamber 64 De 1 JOG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

$ G.N nOx THR - 80 C 80 CCH 0-1 6 135

POL OF NEUTS

P = 0.14 + 0.10 for 0.4 < En < 4 MeV

P = 0.20 + 0.21 for 4 < En < 16 MeV

FORM MBS-418

(REV. 7- 1 Am 64

J

USC OMM*OC 26010-P64 PHOTONUCLEAR DATA SHEET 394

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
ref. H. G. De Carvalho, G. Cortini, E. Del Gludice, G. Potenza, R,

Rinzivillo, and G. Ghigo

Nuovo Cimento JS2, 293 ( 1964)

EL EM. SYM.

Bi 209

METHOO REF. NO. 64 De 4 HMG

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,F ABX 300-999 C 300-999 EMU-D 300-999 4PI

Table I.

Nuclide i

1 Bi 209 W 184 Ag

. 1 Number of runs i

i 3 2 1

Number of atoms cm-1

i

i — 2-10» —5-10-* 10**

Total number of tracks

•

i

i — G000 —500 — 100 i

1 Cross-sect ions per equivalent

at 1000 MeV (millibarns) quatit unt. <xg

. 12.2 — 0.7

4 1 ±0.1 i

i

0.1

1

Cross-sections per photon, ak, and 1000 MeV (millibarns)

between 300 7.8±0.8

i 0.65±0.11 |i —0.05 |

Fissility

i 0.12 0.012

j <0.0015 '

i

Pig. 3. - The Bi photofission cross-section per equivalent quantum, plotted againts

In E. The data from Beknakdim et «*•(*) (circle*), from Juxueiuian rt al. (•) (squares) and from De Carvalho et al. (*) (open triangles) are shown, together with

those obtained in the present w»>rk ifuil triangles).

form NBS-418 MfV. 7-14-94) USC OMM-OC 290I0-P94 PHOTONUCLEAR DATA SHEET 395

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
REF. Yu.Ya. Glazunov, M.V. Savin, I.N. Safina, E.F.

Yu. A. Khokhlov

Zhur. Eksp. i Teoret. Fiz. ,46, 1906-08 (1964)

Soviet Phys. JETP 1284 (1964)

METHOO

Linac

Fomushkin,

ELEM. SrM. A

Bi

REF. NO. 64 G1 1

S3

NVB

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

angle

TYPE RANGE TYPE RANGE

G,N SPC 16 D 16 T0F-D 0-5 90

shown in the figure. The solid curves a. b, and c are the evaporation spectra

with the temperature T = 0.48 ± 0.03 MeV for

platinum, 0.84 * 0.04 MeV for Bi, and 0.98 ± 0.04

The solid curve d is the sum of the evaporation

spectrum and the fission spectrum of uranium:

i:

: _

r.

\ fi - n-y -Y (F) = a

't cx P (- -f) - (1 - a) exp (- 4;

7Sr7 wcp — ) sinh V u/;'

with the parameters: T = 0.33 ± 0.03 MeV,

Tf = 1.05 ± 0.04 MeV, u = 0.5 MeV, a = 0 49

± 0. 01 .

FORM NBS-418

(REV. 7° 1 4-W) USC OMM*OC 2001 0» P64 PHOTONUCLEAR DATA SHEET 396

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANOARDS
T.vkle I. Integrated cross sections in MeV-b, up to 2S MeV, for Pb isotopes and Bi.

Isotope j

a {';,n)di'. j'\(y,2n)dE fTMedE+ \V 0.06.VZ/.1

PI.3' 4 1 1 ) 0.56 2.7S±0.2S 3.07=0.36 2.%

Pl.="; 2.05 0.60 2.65±0.27 2.95 ±0.30 2.97 pi." 1.96 0.95 2.91 ±0.29 3.21 ±0.32 2.98 foam NBS-418

(AIV. 7-14-64) USC OMM-OC 26010-P64

Bi" 2.17 0.76 2.93±0.29

"5Q7

3.25±0.33 3.00
REF. I. Bergqvist, B. Lundberg, L. Nilsson, and N. Starfelt

Phys. Letters _12, 670 (1966)

EL EM. SYM.

Bi 209 33

METHOD

Van de Graaff

REF. NO.

66 Be 1 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

N,G SPC 11 D 7 NAI-D 8- 18

\ 'x *x

Fig. 1. Gamma-ray spectra emitted in the capture of 7.4 MeV neutrons. The dashed line is the spectrum calculated for the decay of a compound nucleus. The dot-dashed line is the response function of the gamma-ray spectrometer for 16.0 MeV y rays. Single-particle states as determined from (d.p) reactions are shown.

form N 85-41

8

(REV. 7*14-04) USCOMM-OC 200 1 0- P64 PH0T0NUCLEAR DATA SHEET 398

U.S. DEPARTMENT OF COMMERC'

NATIONAL BUREAU OF STANOAROs.
NCP* G. Ben-David, B. Arad. J. Balderman, and Y. Schlesinger

Phys. Rev. 146T B852 (1966)

EL CM. SYM.

Bi 209 33

METHOO REF. NO.

Nuclear Resonance Scattering using N,G reactions. 66 Be 3 JDM

REACTION —RESULT

—EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TVPt RANGE type range

G,G RLX 5

- 10 D 5-10 NAI-D 5

- 10 135

J BL

No M) 41 Si P S Q K Cl Ti V CrMsFtGaMCeZnSeBr T Zr Ms A) Cd Sn Sb Te I BsUCe Pr NdSnGdOfHo Er YbHf TalfPtAiHqTIPbftTMJ

u e o i4 a u it neBaa»aaffMaMM»a«o«i 4749iiaii 52 53 58 37 36 59 60 <2 S4 9 if«iT0 72 r3 Ma 79 80 ittiai3 90 g

iz a

0N M N

a

30 30 74 94 U6 32 32 4040 a 96 97 6

9 42 42 a a a 991 0

34 34 34 IS a 99 eo N • 999 4444 » 40 DO00 a

IT 3T 43 a II • 101 8282(22 * * 9 «« Oa<BM2!UB2»2) 02D2D2 060604 BOQ0QMO 4040 47 a 03 63

22 22 42 40 60 60 64 64 0406

23 43 II a 03

24 24 44 44 70 70 70 9 86 0606 06 142142 a 4$ 4$ 71 47 07 M3 a a 40 72 72 72 MUM 0604D6 140 zrzr poaoca 73 90 90 90 09 t SMOCKS as V 74 74 74 91 HO a a 32 76 92 92 92 12112 30 30 30 33 a 93 14

31 34 34 94 94 16 9 33 - 93 »7 99 996 ns M 9 97 eo 9 9

Fig. 3. Histogram of distribution of observed resonances among the different targets. Jhe atomic number is given directly beneath

the chemical symbol followed by the neutron numbers of the naturally occurring isotopes. Magic numbers are shown in brackets.

_

pom NBV4IS

inf v i i vs.

l

Table III. List of effective cross sections.

Scatterer Energy (MeV) source

1 (mb) Energy

Scattenr (MeV) Gamma

source

s (mb)

Sra'« 8.907 Ni 100 Sn 7.01 Cu 110 pr n« 8.MI Cr 9 Nd 6.867 Co 30 La 8.532 Ni 6 Pr“* 6.867 Co 3 Te 8.532 Ni 3» Te 6.7 Ni Cu 8.499 Cr 24 La 6.54 12 Zr 8.496 Se 3050 Cd 6.474 Co 110 Zn 8.119 Ni 13 Mo 6.11 Hr 25« Sc 7.817 Ni 50 La 6.413 Ti 72 Sc 7.76 K 90 Mo 6.413 Ti 10 Sb 7.67 V . . .b TI 6.413 Ti 25 Cd 7.64 Fc 40* W ^6.3 Ti . . .b Ni

Pr

l4l 7.64 Fe 7* Sb 6.31 Hr

7.61 Fe I2« Ti 6.3

1

Hr 2* Tl 7.61 Fe 370* Sn 6.27 75 La 7.634 Cu 7 Pb** 6.15 Gd Mo 7.634 Cu ii Te 5.8 Ni . . .1 Hi«» 7.634 Cu 4 La 6.12 Cl 35 Te 7.528 Ni 664 prui 6.12 Cl 110

Bim 7.416 Se 100 Pt 5.99 Hg

Bim 7.300 As 80* Tl 5.99 Hg 5s Pbm 7.285 Fe 4100 Pb**s 5.9 . . .h Cl 7.235 Fe 34 Ce 5.646 Co 17 prui 7.185 Se 80 Bi» 5.646 Co 55 Tl 7.16 Cu 120 Pb“* S.53 70 La 7.15 Mn 30 Hg 5.44 Hg 75s Bi"* 7.149 Ti 2000 Hg 4.903 Co 385

• High-energy component of a complex spectrum. ‘A broad scattered spectrum with no observable peak structure.

• There are actually two lines of energies 7.647 and 7.633 MeV having

equal intensities in the iron capture gamma spectrum. The cross section has therefore been corrected, although there is no possibility at present of deciding which line is responsible for each resonance.

4 Is probably an independent levelJo the complex spectrum of Nl T rmy* on To.

• Rough estimate.

• May be inelastic component from 7.32$ level in Te.

• The relative line intensities In this case are due to Groshev and

co •wofkert.

f Moline to known for the source at this energy.

• Difficult (o resolve among the many source lines present at this energy. PNOTONUCI.EAR DATA SHLt . 399
REF. B.L. Berman, G.S. Sidhu, and C.D. Bowman

Phys. Rev. Letters _17, 761 (1966)

EL EM. SYM.

Bi 209 83

METHOD

Linac

REF. NO. 66 Be 4 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N ABX 7 C 11 T0F-D 135

The absolute cross section might contain systematic errors of up to 50^.

* 9 6 7 a 9 10 II 12 NEUTRON ENERGY Ik.V)

'

OVER - FORM NBS'418

(REV. 7.14.841 USCOMM.OC 28010.P84 PHOTONUCLEAR DATA SHEET 400

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
Table

I.

Experimental

parameters.

401
«ef. n. De Botton, J. MilLer, C. Schuhl, G.

Nucl. Phys. 25 » 396 (1966)

METHOO

Photon Monochromator

Tamas and C. Tzara EL EM. SYM. A z

Bi

REF. NO. 66 De l

209 83

JDM

REACTION

G jG

RESULT

EXCITATION ENERGY

RT.X 1 7 - 17

SOURCE

RANGE

12 - 17

OETECTOR

TYPE

NAI-D

ANGLE

RANGE

DST

Fig. 1. Sections efficaces de diffusion dipolaire vers 1’avant. R6sultats diduits de raies de Lorentz:

1 ) maximum a 13.3 MeV, 2) maximum a 14 MeV, 3) rtsultat experimental. - courbe en traits mixtes: diduite de l'absorption mesurfe - cercl.es pleins et vidcs: points d£duits des resultats expdrimentaux

de diffusion, relatifs au Pb et Bi respectivement.

Tableau 1 Donnds exp6rimentales

E1

' do/dO (/ib/sr) (MeV) Pb Bi

d = 90° 135° 90” 135°

12 305 ±20 348*25 246*15 252± 15

13.33 570±20 690*30 550±20 692*30

14.67 602 ±20 910±25 635 ±20 925 ±30

16.00 407 ±20 648 ±30 369±20 540 ±30

17.17 270±15 412±20 21 5 ± 15 412± 15

Tableau l

Section efficace et terme d’ interference a d = 0 E

(MeV)

X - /,*+/?,* (mb) Y = lt /t +RiRt (mb)

Pb Bi Pb Bi

12.00 0.61 ±0.04 0.49 ±0.03 0.15 ±0.05 0.17±0.03

13.33 1.14±0.04 1.10±0.04 0.26 ±0.05 0.19±0.05

14.67 1.20±0.04 1.27±0.04 -0.008 ±0.04 0.04±0.05

16.00 0.81 ±0.04 0.74±0.04 —0.054±0.05 0.02 ±0.04

17.17 0.54±0.04 0.43 ±0.03 —0.010±0.035 •0.12±0.03 U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. A. De Marco, R. Garfagnini and G. Piragino

Nuovo Cimento 44 B . 172 (1966)

El. EM. SYM.

Bi 209 2 ^

METHOD REF. NO.

66 De 2 JDM

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G.N SPC THR - 30 C THR - 80 CCH-D 0 - 15 135

neutron energy MeV

Fi<;. 2. - Energy distribution of photone- utrons from Bi. The dashed and the full- line histogram represent respectively the uncorrected and the corrected spectrum.

The full-line curve corresponds to the ex- pression given by Le Coutet r and Lang ( l5

) to represent the neutron enemy distribution

(see the text for the normalization chosen).

form MBS-418 (MV, 7-1 4-441 USCOMM.OC 2601 0-P64 PH0T0NUCLEAR DATA SHEET 403

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF.

METHOD

Jo F„ Ziegler and G. A. Peterson

Proc. Gatlinburg Conference 319 (1966)

EL EM. SYM.

Bi

REF. NO.

209 33

66 Zi 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE

Type RANGE type range

E,E/ RLX D 28-70 MAG-D DST

(b(el)

TABLE 1

Values of B(E3t)

Isotope Energy

level B(E3i) (eV)

10 *Bl 2.58

2.58) 0.527 ± .012

,0 *Pb

I0T Pb

2.73.' 0.773 ± .020

2.615 0. 788 t. 028

2.62) 2.66/ 0.740 t .012 ”*Pb 2.60 0.702 * .032

2. Tuan, S. T., and Wright, L. E., Bull. Am. Phys. Soc. 1J, 338 (1966); Reynolds, J. T., Ph. D. Thesis, Duke University; Onley, D. S., private communications.

3

“ 5

U

r0n ' L° B ‘* "Nudear Sizes,” Oxford Univ. Press, London, 1961); Hofstadter, R., private communication.

form NBS-418

(PUV. 7-1 4-04) USCOMM-OC 20010-P04 PHOTONUCLEAR DATA SHEET 404

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. CL. CM. . ! G. P. Antropov, I. E. Mitrofanov, V. S. Izv. Akad. Nauk SSR Fiz. 2h 336 (1967)

Bull. Acad. Sci. USSR 21, 320 (1967)

METHOD

Russkikh

Bi

REF. NO.

209 S3

67 An 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN ABX THR-20 C 8-20 BF3-I 4PI

Fig. 7. Experimentally determined cross section o<T. a > + 2o,T. J0 > of Bi. The Ic-c.t curves representing <7<t. jn> were calculated on two assumptions: 1 - a = 10.2 ?.nd 2 - a = 20.9.

FORM NSS-418

(REV. 7-14-641 USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 405

u.s. oepartmentof commerce

NATIONAL BUREAU OF STANOARGS
*er. M. Giannini, P. Oliva, D. Prosperi and G.

Nucl. Phys. A101 . 145 (1967)

METHOD

Toumbev

ELEM. SYM. A

Bi 209 83

REP. NO. 67 Gi 1 egf

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE

TYPE RANGE TYPE RANGE

G,G LET 7 D 6-8 NAI-D 4-3 DST

Note: Varied Doppler Width

«T

105

100

035

105

100

095

090

EFFECTIVE TEMPERATURE T

RT MS

no

105

100

095

120

100

Q80

Q60

Fig. 7. Calculated variation in resonant scattering cross section as a function of scatterer temperature

for different values of <). Eq. (II) defines Rj.

Table 3 Angular distribution results

Resonant

Resonant level energy Ground Resonant Statistical -V*

&*ocopc (McV) state spin level spin factor g

JJL 1.3 0.09

Bi 7.15 *t •/ 1.0 0.1 5 ±0.04 0.19

i o.s 0.03

i 1.0 0 Sn 7.01 * t 2.0 0.24 ±0.04 0.25

Cu

i 0.5 .0.00 ±0.05 0

8.50 i

*

•i 1.0 0.16

si 1.5 0.14

\ 0.5 0 Cu 6.07 ni \ 1.0 0.20 ±0.04 0.16

i 1.5 0.14 [ever]

form NBS-4U

(MIV. 7-1 4-64) UJCOMM-OC 2601 O- P64 PH0T0NUCLEAR DATA SHEET 406

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OP STANOAROS
Tahli 4

Experimental results

Source*

scattercr Energy (MeV) ry (eV) l\.o

(<iV) I'yoir7

<5 (eV) <ff„> (b) (b)

Ti-^Bi 7.15 0.32 ±0.23 0.42 ±0.1

4

> 0.68 < 2 2.6 ±0.8 3.6 ±1.2 Cu-u,Sn 7.01 0.5 ±1.1 0.3 ±0.3 3.6±0.7 1.2 ±0.4 3.4 ±3.5 Cr-^Cu 8.50 11.5 ±8.0 0.94 ±0.29 0.08=0.04 9.4 ±0.7 (4.2 ± 1.3) - 10 -» 0.64 ±0.20 ITi-“Cu 6.07 0.67 ±0.35 0.36=0.07 0.54 ±0.19 9.3 ±0.8 0.44±0.13 2.0 ±0.4

\Ti***Cu 6.07 0.32 ±0.1

8

0.16±0.03 0.51 ±0.18 9.2 ±0.8 0.20 ±0.06 0.92 ±0.19

In the last two columns, <<r„> and a,m are elective cross sections measured at temperature T, = 200* 1C

I

407
ref. EL EM. SYM. A Z R. R. Hurst and D. J. Donahue

Nucl. Phys. A^l, 365 (1967) Bi 209

METHOD REF. NO.

83

Neutron capture gamma rays 67 Hu 1 EGF

EXCITATION ENERGY

SOURCE DETECTOR

REACTION RESULT TYPE RANGE TYPE RANGE

ANGLE

G r N ABX 9-11 D 11 BF3-I 4PI

Table 1 Fig. ' Cross section (in mb) versus mass number of the target for gamma-ray energies of 9.00, Photoneutron cross sections (mb)

9‘ 72 and 10 83 MeV> The SO,id lines are plots ofeq“ U) in the text‘

Target 7.72 MeV 9.00 MeV 9.72 MeV 10.83 MeV

‘•Co 9.0 — 0.8

7, As 20.4 ± 1.7 «Nb 0.53 ± 0.10 14.6- 2.2 25. 8± 2.1 ‘“Rh 10.6 — 1.7 38.8 ± 3.1

107 Ag 1 ‘"Ag ) 10.0- 1.5 37.6 ± 2.9 “Mn 1 7. 1 - 2.6 33.3 ± 2.7

* J'Sb ) *”Sb | 20.7 - 3.1 42.5 ± 3.6

127[ 38.7 - 5.8 38.8 ± 3.1 lMCs 31.7 = 4.8 52.5 ± 3.8 “•La 8.61 ± 0.86 40 8 . 6.5 63.0± 5.0 “‘Pr :i 5 : 3.2 58.3- 4.1 “‘Eu 1 28.9 ± 3.2

* MEu ) ol.3 : 14.7 102 — 18 ‘••Ho 35.6 ± 4.3 Y2.2 -27.6 150 ±20

‘•‘Ta 4.14±0.36 45.4 x 3.7 65 0 r 5.5 146 = 12 “7 Au 44.5 ± 3.6 68.4 - 1 3.5 160 -15

»o.pb <34.3 238 ±29

«*Pb 22.6 ±11.3 280 ±31

"•Bi 36.1 ±12.0 226 ±27 408

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUR CAU OF STANOAPOS
REF. F. T. Kuchnir, P. Axel, L. Criegee, D. M. Drake, A. 0. Hanson

and D. C. Sutton

Phys. Rev. ,161, 1236 (1967)

ELEM. SYM.

Bi 209

method REF. NO.

67 Ku 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N SPC 12-16 D 12-16 TOF C-3 11-

Fic. 4. Semilogarithmic plot of the spectrum resulting from the data shown in Fig. 3 after dividing by the neutron energy and

correcting for the detector efficiency (solid line in Fig. 2). Tri- angles represent the neutron-energy resolution. The solid line extrapolated to higher neutron energies is the result of a least- squares fit to the five lowest-energy points. The apparent nuclear temperature represents only a lower limit since the line-shape correction has not been included.

FORM NBS-418

(Rev. 7-14.84) U1COMM-OC 2601 0-P84 PHOTONUCLEAR DATA SHEET 409

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. A. V. Mitrofanova, Yu. N. Ranyuk, and P. V.

J. Nucl. Phys. (USSR) 6, 703 (1967)

Sov. J. Nucl. Phys. 6, 512 (1968)

METHOD

Sorokin

EL EM. SYM.

Bi 209 S3

REF. NO. 67 Mi 1 HMG

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR . ANGLE TYPE RANGE TYPE RANGE

G,F ABX 300-999 300-999 TRK-I

Detector: Fission fragment tracks in glass. 999 = 1600 MEV

Angular distribution measured for Pb was found isotropic;

for other elements it was assumed isotropic.

Nucleus Kissionability D

Cross

section <rK, nfi Nucleus Kissionability D

Cross

section <rK, t±0

Bi 0.tl±0.0t 7.8±0.6 Os 0.0058 ±0.0005 0.37±0.04 Pb 0.050 ±0.004 3.4±0.3 Re 0.0056 ±0.0006 0.35 ±0.04

T1 0.031 ±0.003 2.1 ±0.2 Ta 0.00/, 5 ±0.0005 0.27±0.03 Au

Pt 0.010x0.002

0.012x0.002

1.25±0.10

0.80±0.08

Hf 0.00/,2±0.0004 0.25±0,03

l . i I.,.. ....i at vt «* wane u

£«,GeV

*• Photofission fragment yield*. O-preaott work; O-Jungerman and Steiner.' 1

1

The curves were plotted through the experimental point*.

Fig. 2. Photofission fragment yield* a* • function of Z'/A. The

ordinate* are values of <r« in units of cm*. FORM NBS-41S

(Rev. 7-1 4.441 USC OMM-OC 24 010* P44 PHOTONUCLEAR DATA SHEET 410

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. Yu.

J.

Sov

METHOD

N. Ranyuk and P. V. Sorokin

Nuci. Phys. (USSR) jL 37 (1967)

. J. Nuci. Phys. jj, 26 (i967)

EL EM. STM. A

Bi

REF. NO.

67 Ra 2 HMG

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,F ABX THR.-260 C 100-260 EMUI

DST

Angular distribution isotropic to 5 %,

Table II

«*, MeV

Cross section per equivalent y quantum, 10'” cm*

BI Pb AU Ft

100 0.07+0,005 0.017+0.002 0.003+0.0005 0.0012+0.0002

120 0.15+0.01 0.032+0.003 0.014+0.001 0.0035+0.0003

140 0.20+0.01 0.054+0.004 0.020+0.001 0.0053+0.0006

150* 0.61+0.12 — — —

m

160 0.31+0.01 0.006+0.005 0.037+0.001 0.012+0.0005

180 0.46+0.02 0.13+0.01 0.055+0.001 0.015+0.001

180* 0.68+0,09 — — —

200 0.62+0.02 0.20+0.01 0.082+0.002 0.031+0.001

200* 1.5 ±0.24 — 0.31+0.09 —

200 •• 0.7 — — —

220 0.83+0;03 0.28+0.01 0.108+0.003 0.039+0.001

240 1.22+0.03 0.36+0.01 0.146+0.003 0.063+0.001

240 •• 1.5 — maw 250* 1.78+0.22 — 0.33 +0.07 —

260 i. 50+0,04 0.50+0.02 0.180+0.004 0.085+0.002

•From ®. ••From ,u.

Fig. 3. Photofusion cross sections. O-Bi, •-Pb, A-Au, APt The.carres were calculated from smoothed yield curves.

FORM NBS-418

(RIV. 7-1 4-641 USCOMMwOC 260 1 0* P64 PHOTONUCLEAR DATA SHEET 411

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOAROS
REF. J„ Mo Wyckoff

Physo Rev. I 953 (*1967)

METHOD

EL EM. SYM. Z

Bi 209 83

REF. NO.

67 Wy 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

rype range TYPE RANGE

G,4NP G,8NP RLI THR- 137 C 137 ACT1

4PI

G,5NP

g,6np

G,7NP

Fig. 1. The plotted points in the upper portion of this graph

represent the relative yield in atoms of each nuclide plotted against the sum of the neutrons x and protons y emitted. Circles are for bismuth and squares for lead nuclides with y«l. The

points in the lower portion of the graph are cross sections inte- grated to 137-MeV photon energy. Uncertainties indicated are deduced from the scatter of the yield points and thick target bremsstrahlung shape uncertainty.

Table I. Integrated cross sections and mean yield for production of •“•Bi and m “Pb.

Process Nuclide produced Mean yield fa dE MeV-mb

(7,*) “•Bi 2170

(y,2n) "Bi 2.08X10“ 760 ±38

(y,3n) “•Bi 3.09X10“ 168 ±25

(yM) “•Bi 1.19X10" 88 ±22

(t,Sr) •Bi 5.63X10“ 55 ±16

(t,6r) “•Bi 5.43X10* 66 ±23

(7,7b) “•Bi 2.10X10* 31 ±12

(7,8r) “‘Bi 6.01X10* 10.7 ± 5.9

(y,9n) “•Bi 2.76X10* 5.7 ± 3.4

(y,4n P) “•Pb 8.25X10* 8.0 ± 2.4 (y.Snp) “Pb 3.12X10* 3.8 ± 1.3 (y,6ttp) “Pb 2.28X10* 3.4 ± 1.3 (y,7np) “'Pb 8.57X10* 15.3 ± 8.4 (yMp) "Pb 7.8 X10' 1.62± 0.97

form NBS-418

(REV. 7-1 4-64) use OMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 412

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. J. M. Wyckoff

Phya. Rev. J£2, 953 ( 1967)

EL EM. SYM.

Bi 209 83

MeTHOO REF. NO.

67 Wy 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE range TYPE RANGE

G,3N G,7N RLI THR- 137 C 137 ACTI

4PI

G.4N G.SN

G,5N G,9N

G,6N

Tablx I. Integrated cross sections and mean yield for production of "•“"•Bi and “““Pb.

Nuclide

Process produced Mean yield fa dE MeV-mb

(y,n) “Bi . . • 2170

(y,2n) “Bi 2.08X10“ 760 ±38

Mn) “•Bi 3.09X10“ 168 ±25

(y,4h) “*Bi 1. 19X10“ 88 ±22

(7,S») “Bi 5.63X10“ 55 ±16

(y,6n) “Bi 5.43X10* 66 ±23

(7,7n) “Bi 2.10X10* 31 ±12

(7,8H) “Bi 6.01X10* 10.7 ± 5.9

(7,9*) “Bi 2.76X 10* 5.7 ± 3.4

(7Mp) “Pb 8.25X10* 8.0 ± 2.4

(7,5np) “Pb 3.12X10* 3.8 ± 1.3

( y,(mp) “Pb 2.28X10* 3.4 ± 1.3 (7,7np) “Pb 8.57X10* 15.3 ± 8.4

(7, 8np) “Pb 7.8 X10» 1.62* 0.97

Fic. 1. The plotted points in the upper portion of this graph

represent the relative yield in atoms of each nuclide plotted

against the sum of the neutrons x and protons y emitted. Circles are for bismuth and squares for lead nuclides with y— 1. The

points in the lower portion of the graph are cross sections inte- grated to 137-MeV photon energy. Uncertainties indicated are deduced from the scatter of the yield points and thick target bremsstrahlung shape uncertainty.

form NBS-418

IRKV. 7-1 4-64) USCOMM.OC 29 010- P94 PHOTONUCLEAR DATA SHEET 413

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF A, V 0 Babchenko, V. V. Petrenko, Yu. N. Ranyuk, P. V. Sorokin

Ukr. Fiz. Zhur. JJ, 863 (1968)

Ukr. Phys. J. JL^, 615 (1968)

EL EM. SYM.

Bi 209 33

METHOD REF. NO. 68 Ba 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

E,F ABX THR-999 D 200-999 FRG-I 4PI

<3 = electron induced fission GEV

edq = cross section per equivalent photon for photofission

V

>2o

o

V)

20

. 02 OM 06 0.9 1 12 £a. Ge v

rig. 2. Og/o

e

as a function of electron energy.

‘ *S« '- r°ss section for (lie fission of bisniulli by electrons func-* tion of electron energy.

form NBS-418

(Rev. 7-IA.W) USC OMM.OC 29010-P84 PHOTONUCLEAR DATA SHEET 414

U.S. DEPARTMENT OF COMMERCE

N A TION A e BUR CAU OF STANDARDS
ref. H. R. Bowman, R. C. Gatti, R. C. Jared, G. Kilian, L. G. Moretto,

S. G. Thompson, M. R. Croissiaux, J. H. Heisenberg, R. Hofstadter

L. M. Middleman, and M. R. Yearian ’ Phys. Rev. 168 . 1396 (1968)

METHOD

ELEM. SYM. A

1 Bi

REF. NO.

209 S3

63 Bo 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

E,F ABI D 250,500 EMUI

4PI

(MICA)

Tabu I. Experimental results.

Target Thickness Method

used

Fission cross section 250 McV f (cm*) 500 McV «- (cm*)

»iU*** • 85 xg/cm* Mica (6.0±1.2)X10-*» (9.4±1.9)X10-**

•tb®* 162 xg/cm* Counter (5.0±1.0)X10-*» (7.0±1.4)X10-*» uBiw 1 mg/cra* Mica (2J±0.5)X10-*» (1.4±0J)X10~**

jtTa,,‘ 4 mg/cm* Mica 5.9X 10-** k

* t-12 Xto-* in urtet sample.

* Not corrected (or photofiuion contribution C»e« («) in text].

form NBS-418

(REV. 7.14.041 USCOMM-OC 2001 O.P04 PH0T0NUCLEAR DATA SHEET 415

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
ref. N. N. Kaushal, E. J. Winhold, P. F. Yergin, H. A. Medicus and

R. H. Augustson

Phys. Rev. r7£, 1330 (1968)

EL. EM. SYM.

Bi 209 83

METHOD REF. NO. 68 Ka 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N ABX 50-35 C 55,85 TOF-D 10-85 67

(67.5)

* *

1 N •

l

a

i III*

# "*»« -

•

’ H

j

f |H,

t

I,

* c

l

i

Cm

•

m Z* *

1

0 —*—a-* i

hi "v.„

rt '* h‘

*,

{ Mil• m f 1

1

NEUTRON ENERSV.MeV Fm. & Observed neutron spectra, due to 55-85-MeV difference photon spectra. The effective cross sections have been divided by

eoo -

a* «oo 9

« too

1 1 1 1 1 1 1

F,a AT ty • 70 MeV (LEV1NGCN)

-

•

•••

-

- \\\ E** M3 M«V

• *

1

\ • • _ •\ *

•

<Po W,TM optical ATTENUATION

••

. o

© -j o % © 1 E« * 30 M©V °

! —J ! -1 1 1 1

1 40 60 z

Fio. 7. Effective cross sections for production of fast neutrons with energies greater than 10 MeV (solid circles) and 30 MeV

(open circles) by the 55-85-MeV photon difference spectrum. The

dashed curves are modified quasideuteron model predictions as discussed in the text.

NEUT ENGY SPEC

Table L Comparison of present cross-section values in mb

for production of nigh-energy photoneutrons by 55-85-MeV photons with measured cross sections also in mb, for total photoneutron production. The present cross-section values are uncertain by 8 to 10% because of counting statistics and normalization errors; in addition all values depend on an absolute normalization in terms of the deuteron photodisintegration cross section, which is known to about 10% at these energies.

Target

4r(dr/dw)ei* (£.>10 MeV) f(t.Tr)

[Present Jones and

experiment] Tenvilliger* Costa d al> Other

results Li a75 1.0 Be 1.0 17 2J 2J» B LO 1.4 C 1.5 u 1.4 2.4< 0 u 1.6 AJ 18 5.5 4.6 S 11 4.4 6J4 Ft 41 16 •12 Cu 4J 20 19 Zn 4.4 15 In 7.4 Sn 7.0 Ta ia7 95 T1 ia? Pb SJ 100

Bi 13 U 16 65

• Average ctoee Kctnu between 55 and 85 MeV. aa read from Figs. 4 and 5 of Ref. 4. _*/«*»<*£ —J'tmrdJI/50, a* taken from Fig. 4 of Ref. 5 and Table I of RCT.O.

* S. Coma. L. Pawi—lint . G. Piragino. and L. Roaiio. Nuovo Cimento

42. 306 (1966).

e G. Bishop. S. Coma. S. Ferroni. R. Malvano. and G. Rlcco. Nuovo

Cimento 42. 148 (1966).

form NBS-418

(REV. 7.1 A. 64) USC OMM.OC 2601 0- P64 PHOTONUCLEAR DATA SHEET 416

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
Her

.

METHOD

A. I. Lepestkin

Yad. Fiz. 8, 433 (1968)

Sov. J. Nucl. Phys. 8, 251 (1969)

Bi 209 33

REF. NO.

63 Le 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N SPC 7-20 C 20 EMU-D 0-13 DST

r

i

FIG. 1. Energy distribution of photoneutrons from Bi for Ey max “ 20 MeV for an angle of

90°.

umY

it iSOOr zmvm

erni'’

war -W /* woov J uo/'

SOOY WO

•/:\

\

0 JO SO SO WWW J JO 60 SO '07 'JO 'JO

f. * aeg mr

r /

I"VV

o jo >0 so too oo 'jo , .-Vo

» jeg jvg FIG. 2. Angular distributions of photoncutrons from Bi for E- max = 20 MeV: a - 5 < En < 7 MeV, b - 7 < t n

•, McV. c - 5 < E n < 1 2.6 MeV, d- 9 < En < 12.6 MeV. X Experimental points (the statistical errors are shown). O - points from a ..urve .ai^u.ated by the method

of least squares (solid line).

form NBS-41S

iniv. 7 - 1 «- sal USCOMM.OC aeoio.pe* PHOTONUCLEAR DATA SHEET 417

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF 3TANOAROS
REF. R.V. Wamock and R. C. Jensen

J. Inorg. Nucl. Chem. 30, 2011 (1968)

EL EM. SYM. A

Bi 209 83

METHOD REF. NO.

68 Wa 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.F ABX 30-40 G 30-40 ACT -I 4PI

FRAGMENT YIELDS

suss mnuca

Fif. 2. Fragment yield per saturated copper activity as a function of ma» number and

peak brcimstrahlung energy.

(over)

FORM N3S-418

IRCV. 7°1 4. 64

1

USCOMM-OC 28 01 0- P6 4 PH0T0NUCLEAR DATA SHEET 418

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAUOF STANDARDS
TOTAL

FISSION

CHOSS

SECTION

(BARNS)

ENEROY (*•»)

Fig. 3. Total fission cross-section as a function of photon energy.

419
REF. EL EM. SYM. A Z J. F. Ziegler and G. A. Peterson

Phys. Rev. 165 . 1337 (1968) Bi 209 33

METHOO REF. NO.

68 Zi 1 HMG

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle TYPE RANGE TYPE RANGE

E,E/ FMF 2-3 D 28-73 MAG-D 28-73 100

B( EL)

Fig. 15. Experiments.! relative cross section versus momentum

transferred to the nucleus 11 i*' normalized to an initial electron energy of 70 MeV for t..„ group of excitations a: about 2.6 MeV.

The solid curves are the best hts of the GLllGW ca.cuiation assuming the Tassie uydrobynamical model ;or an L = 3 trar.s.tion.

OVER

FORM NBS-418

<R IV. 7»l 4*641 IJSC OMM* O C 26010* PS

4

PHOTONUCLEAR DATA SHEET 420

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF 9TANOAROS
Ta^ls II. Zxpcri;uCPikMi ViltUCS oi reduced r.uc.car transition probabilities £ :or lac cxciia:; •• r.uCtCus i rot;* .is "rrior suu :o an excited st•lie as uclcr.v.;uCit 57 1.1C C.CCfc.O*. scalier.r.~ nicl..o*>s ci Las cr._ o. vi.tCiii ar.<* . • • • >*R.S. 4HO UHio <>, arc t*j wv.crc c is lac c.cciron ciiar~c, 5 is 10"'* caiJ (1 b), and £ ;s tnc mu.tipo—»*iy oi uiti- transition. !><££)•p IS t*»C csi***«aic oi 1a;. (10),

a *115 CXpcniQCtlt 2 (EL) Other experiments Level x rar.siiioa £ (££. 0 —* £) GD v,a.£)*p

i> v££, (j — E) NuCtiuC (MeV) caaracicr Ref.

?i)w •i.G^ £2 0.23 ibO.02 6.2 a V/bP/O.-O

•t.O' V#

l*\

4.; 2&; £2 0.26=0.02 7.0 cd

(cr l AL

# ^0.53

v/>,/>0.1$ Pb“* •1.07 £2 0.50=0.02 $.1 c i

,n1a')0.35

i* (/'.//0.17 Pba* 2.65 £3 0.64=0.0-, 35 a (/>,P')0.55 Pb“» 2.625’*'', 2.6641*/ £3 0.67=0.0-, 37 cd

(<v,a”G.56

( 1> 11)';0.o2 ?b“* 2.6 U £3 0.72zG.G-s 59.5 c <a,a'y0.57

; (t

, ,tf')0.53 (^,y)0.c7

0 (,b»'}0.56 h (C“,C“7/0.S3

; (p„»')0.a-l

j (p,5',u.v7 N 0.71 c;«* 2.6’ £3 0.67=0.05 57 c (a,a

/ )0.57

1 (C.tf'yG.OO m {p,/}0.65 ?uyi 4.32 c. 4* 0.22=0.02 25 a (p.p'yO.Oib Pb“r 4.29 £** 0.21=0.05 2-1 c (a,a';0.’.2 Pb“* 4.31 £*i ^.25=0.02 26 c (a,a

# )0.13

: (i,«')0.2-i c 0>,p';0.057 Pb“* 5.25 £3 0.15=0.05 7.2

(*-**) G.i**s:G.G7 ' 16 Pb» 5.6 £3 0.09=0.05 5 c (a,a')0. 16 PU»* 6.2 £2 i>.07=0.G2 2 v£C) Pb-“ 5.2 £3 0.06=0.02 w c (a,a

1

'; 0.05

c (p,/)0.054

• G. v.;;o;«,, J. Sa;;«,. O. In-. r. P. ,*/•.. Letters 24; 5 12 v 1467 > . •»v.n; iU i,.;-. c\> :.:in i tr.Lm from .

. C. Kafcic and R. Woods, ?Uys. Letter* 24. 579 (1966), Airier, P,.y-. ,\« v. 14 A 1153 G *»6» ; Pl.y*. Letters 25L 459 , .9f>7).

a G. V.u'.wis. J. O. Leer, M. Gen...-. t. .ina ?. Lo^.mo, Pays. Letters 22, 659 (1966),

• Sv»nd;no?. G. y..l,o.a. O. j>cer, NI. Go.'v.ro:. and ?. Loputo, Pays. Letters 22, 492 (19**6).'

' II. CranneL. R. Loin;, II. Herma.i.^*. Geaer. and M. Ycr.nan, Pays. Aev. 123, 923 <1961) ; and 11. W. Rcnaall and J. Oeser, i bid. 130. 245 (1963).

• A. Scot; and M. P. Priclcc. P'.’.ys. Letters 20, c54 v 19*16).

*• A. Z. Krynlt.ewicz, i. Repta, S. Szymezyit, and 7. Walcza2, N’uci. ?'.;ys. 70. 495 (1966), references cited therein, and see text of this section.

• G. X. S..:cl.lor, 14. H. Laasol, ar.d X. M. Lr.axo, ?hys. Letters 5, 256 (1963).

• V. Stovall ana X. M. riiatz. Pays. Rev. 155. 3330 <1964).

k ?. H. Stol»v/;i c* uL. Nuci. Piiys. 66, 47 (1465^.

1 Approximate energy of seven unresolved pea**. J. C. ILicie and R. Woods. Pliys. Letter 24, 579 (1966). • S. Hinas, H. Marcuant, J. H. 3jerre*uard. ana O. Nathan, Pay#. Letters 20, 674 (1966.

421
Cl. EM. STM. A R. B. Begzhanov and S. M. Akhrarov

ZhETP Pis. Red. 10, 39 (1969)

JETP Letters _L0, 26 (1969)

METHOD

Bi

HEP. NO.

209 83

69 Be 7 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPC RANGE TYPC RANGE

G,G LFT 7.0 D 7.0 D DST

(7.15) (7.15) (90,135)

Self-Ab sorption

.

7.15 MEV

Results of determination of the resonance-level parameters

SourcescattererBy » KeV

A V % r

eVv o,

keV

Reference

Pb - Za6* 7.44 33±4.5 0.5*4.12 63.7030.13 This work

TI - Mo 96 4.413 11.2 tl.4 0.11*0.02 R.68± 1.57 M Ti - U139 4,413 16 043.10 023*0.05 8.03 ± 1.42 II Ti - Bi 209 7.15 1200 ±230 0.32 ±0.07 1.84*0,40 II 5.996 1550 — - (11 7.15 2600 ±800 0.42±0.14 - [5] Ti - Ca65 6.07 423 ±103 0J4±0 06 99.1 ±17.4 This work

6.07 440 ±130 0.36 ±0.07 [5] r, - Ca63 6.07 215 ± 71 0.18 ±0.04 67.14tl2.7f This work

5.07 200 t SO 0.1 5± 0.03 - [4] rs.so 22 t 7 036±0.08 no ±40 This work

Cr - Ca63 8.499 35 75 — HI

[ 3.50 19 ±6 038±0.09 - (51

8.40 36 ±9 0.47±0.10 21 .36 ±4.54 This work

Cr - Ca65 8.499 80 10.5 — [11 5.50 42 ±13 0.94±039 - [41

7.01 1150 ±240 0.16±0.04 0.44 ±0.12 This vork

Ctt - Sail* 7.01 1000 — — [11 7.01 1200 ±4C0 0.3 ±0.3 - [51 Hg - Mo 96 4.44 201 ±37 0.12 ±0.04 033 ±3.07 This work

form NBS-418

(R IV. 7-1 4-04) USCOMM.OC 26010-P44 PH0T0NUCLEAR DATA SHEET 422

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. R. Cesareo, M. Giannini , P. Oliva, D. Nuci. Phys. A132 . 512 (1969)

METHOO

Prosperi and M. C. Ramorino

Bi 209 33

REF. NO.

69 Ce 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G NOX 6-8 D 6-8 SCD-D 0-3 DST

3.2. THE 7637 ItcV RESONANCE IN Bi The spectrum of the photons scattered from natural Bi is shown in fig. 6. Elastic transitions at 7637, 7172 and 6392 keV are evident. The energies and the relative

intensities are given in table 2 together with the energies of the capture y-ray lines for comparison purposes. The angular distribution on the 7637 keV transition, measured

at 90’ and 135 s with the Ge(Li) detector, gives the result N( 135°)//V(90°) = I.19!g;‘|. For the angular distribution sequences S( 1 )?( I )?, $( I >r-( 1 )?- ?( 1 )i( 1 )?> such a ratio

is equal to 1.16, 1.06 and 1.002 respectively. The spin of the 7637 keV level then probably has the value ?.

Table 2 Energies and relative intensities of the photons resonantly scattered from a Bi target ry(keV) fv

(rel) fy (n.y)c«*) /y(n,y)c«

*)

6392 i 8 23 ±6 6393.4 l.l 7172±4 20=4 7176.1 2.4 7637 100 7637.0 14.5*

') Ref.

FORM NBS-41B

(REV. 7* I 4. 64) U1COMM.OC 28010.P64 PHOTONUCLEAR DATA SHEET 423

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUPEAUOF STANDARDS
REF. R„ Garfagnlni v G. Piraglno & A. Zanlnl

Atti Accad. Naz. Lincei, Rend.

Cl. Scl. Fis. Mat. Natur. 47, 33 (1969)

ELEM. SYM.

Bi

A

209

z

83

METHOD REF. NO.

69 Ga 3 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle TYPE RANGE TYPE RANGE

G,XN SPC 8-85 c 85 CCH-D 135

ET

h f -05 P

i i r

8 < E„<12 MeV

2 e P i_ I . i 1 I » 1

1

J

6 4 < E„ < 8 MeV < 2 *

-

.1 v t

1

1 » * -- 11 1 L

.4 k

1**1

2 < E„ < 4 MeV 1

1

.3

.

1 1

*

«4

j 5

> .8 < E„ < 2 MeV t -

-t j

'

i 1 1 1 1 1 1

() 10 20 30 40 50 60 70 80

200 L 3 1001- a.

t 1 r—

E„ > 30 MeV

• i \400j- 10^< E„ < 30 MeV

igljM E

vf

Fig. I. - Percentage of thr photniieulrnns emitted at I m :l. • r ... ; j

-

, nrrgy

interval as a function of Z. by a y- ray brcmsstraiiliin;, U .n. aim KV m».

v SH 1330 (1968).

-- 85 MeV. Theopen circles represent the values obtained at <<" '!.i and *IJo.

Fig. 2. - Number of photoneutrons emitted at 1350

, normalized to the sum

rule factor NZ/A. as a function of Z. In the upper part is reported the effec- tive cr<~s section divided by NZ/A for photoproduction of fast neutrons by t$ MeV hremsstrahlung photons as deduerd by Kaushal et al. [1]. ^N.N. Kaushal et al. , Phys. Rav. 175 . imfbcf
rep. A. P. Komar, B. A. Bochagov, A. A. Kotov, Yu. N. Ranyuk,

G. G. Semenchuk, G. E. Solyakin, and P. V. Sorokin

Yad. Fiz. 10, 51 (1969)

Sov. J. Nucl. Phys. 10, 30 (1970)

method

I EL EM. SVM. A i Z

I

Bi

, REP. NO.

I

X

209 33

69 Ko 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE TYPE RANGE TYPE RANGE

G,F SPC THR-999 C 250-999 SCD-D DST

ooo f 1000)

H

FIG. 2. Single-ended energy spectra of fragments from photofission of wU”*, M Bi,0». and „Au,Tt

.

999 = 1000 MEV

r., n*v

, FJG. 4. Average total kinetic energies Efc of fragments from photofission of .] U“* , M Bi:o*

, and „ Au 1 ” . as a function of the heavy frag- ment mass. Points—experiment; solid curves— theory; dashed curves— -experiment with inclusion of a correction for neutron emission from

the fragments.

FORM NBS-418

IR CV. 7.1 4>94l USC OMM.O C 290

1

0- PSA PH0T0NUCLEAR DATA SHEET 425

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUflEAUOF STANOAROS
L.E. Lazareva and A. I. Lepestkin

Yado Fiz. .10? 266 (1969)

Sov. J. Nucl. Phys. JA, 149 (1970)

EL EM. SVM.

Bi 209 83

RE*. NO.

REF.

MlETHOO

69 La 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

type range TYPE RANGE

G,N SPC 29 C 29 EMU- D 4- DST

(28.5) (28.5)

E

n b/a A/a

>3.5 .48 .13

>8 1.53 .98

3.5<E

n

*5 .20 -.004

Asymmetry coefficients A/a in the angular distributions

of the type I(j) = a + b sin*j + A cos obtained in different investigations for photoneutrons from Bi

4* E T ..ax-:»>««V M.V

eL M.V "*

j

Reference

E-r Min*. MeV

i i

j MeV ; A. a

i“i* 20 >5.5 O.J4 =0.tl!;

'1 i ur 30 jfe-s

!

“.-3 »» l“! 22 >.7 |i.t55*n.ti56!| i*i 30

1*1

*V» >5.5 i 0.n9+tM'6i| >5.S -0.02*0.1171

| >3.5 l-n.OS-srt.Ot l

i‘i 55 1 >5.5 I '1.29 -ii. 1.5 h 17.5 i*i Present work

34 >8 10 29

; 1 3.5—51—n.-i«i4_ M84

i*i 20 I >5 —O.o3±(>.i*7 ; l>7 -a'.0t±0.17!

28.5 1 >3.5 |

: l>5 J >«

i. .l.l-i*. u7 0.2'ix 1 ' It 0.98x0.31

®More accurate value* of the asymmetry coefficient*, obtained from the data of f

,s

). are given in [*].

FIG. 4. Energy spectrum of pnotoneutrons from Bi at 90°. following irradiation by a bremsstrahlung spectrum with maximum energy Eymax = 20 MeV (dashed curve) and 28.5 MeV (solid curve). The histo- grams are made to coincide in the interval 4 - 4.5 MeV.

FIG. 2. Angular distributions for different integrals of the neutron

energy En. The curves were calculated by the method of least squares

(I(t5) * a + b sin1 J * A cos $).

5 0. Borello, F. Ferrero, R. Malvano, and

A. Molinari, Nucl. Phys. -^1, 53 (1962).

Ferrero, A. 0. Hanson, R« Malvano, and

Tribuno, Nuovo Cimento 418 (1956).

form N8S~418

(REV. 7o14o«4) USC OMM.OC 260 1 0« PS

4

PH0T0NUCLEAR RATA SHEET 426

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
F. R. Metzger

Phys. Rev. _187, 1680 (1969) Bi 209 83

METHOD REF. NO.

69 Me 2 hmg

reaction RESULT excitation

ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

G,G LFT 2-3 C 3 SCD-D 127

(2.563, 2.581, (2.72)

2.598)

2.563. 2.581. 2.598

The resonant scattering of electron brcmsstrahlung by the }*, and members of the 2.6-MeV

scptuplet in Itt®* has been studied. On the basis of the scattered intensities, and assuming ground-state branching ratios IV T of 0.5, 1.0, and 1.0, respectively, ground-state transition widths of ry2.581, |+

) <1C

meV, r»(2.56J, J+

) = 30±5 meV, and r.( 2.598, = 9.0±2.4 meV were obtained. The observed transi- tion strengths agree well with the predictions of the particle-vibration model in the form used by Hamamoto,

with e.n2 (£l) =0.05.

Table II. Bi*". Summary of the widths r* obtained from the resonance-scattering experiments, and comparison of the corresponding

£(£l)'s with the results of other experiments and of calculations (Ref. 10) based on the particle-vibration coupling model. 3(£l).p =

(«*/4r) (Jy~R£ was used ior the single-particle reduced El transition probability.

Level energy (MeV) ivr

it (MeV)

B{F.\) nJB(FA)n

This work Olliers

BUL

B(F\).U

2.563 l 30±5 (7.5±I.3)X10-‘ >2. IX 10“* •» 5.5X10-*

2.581 o.s <10 <2.5X10-* .6.3X10-*

»

7.5X10-*

2.59S l 9.0±2.4 (2.2±0.6)X10~‘ >2.1X10“* b 3 . 1 X 10~*

• Reference 10. u-mu er u

J (/Tl) —0.05. *• Reference 2.

2 R. A. Broglia, J. S. Lilley, R. Perazzo, and

W. R. Phillips, Univ. of Minnesota, AEC Report

No. COO- 1265-79 (unpublished).

10

1. Hamamoto, Nucl. Phys. A135 . 576 (1969).

form MBS-418

(REV. 7>I4.«4I UJCOMM.OC 260 1 O* P64 PHOTONUCLEAR DATA SHEET 427

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. L„ G. Moretto, R. C. Gatti, S« G. Thompson, J. T. Routti, J.

Heisenberg, L. M. Middleman, M. R. Yearian, R. Hofstadter

Phys. Rev. _L72, 1 176 (1969)

method

H. 83

69 Mo 1 hmg

REACTION RESULT EXCITATION ENERGV

SOURCE DETECTOR

ANGLE

rype range TYPE RANGE

E, F ABX THR-999 D 60-999 TRK-I DST

G,F ABX THR-999 C 60-999 TRK-I DST

Tabular data given; angular distribution isotopes 999 - 1 GEV

Fig. 7. Photofission cross section as a function of energy for **Bi (open squares) as obtained by unfolding the electron- induced fission cross-section data (diamonds) with the El kernel. The solid line is the fit to the electron-induced fission cross sections which is obtained by folding back the photofission cross section into the £1 kernel.

form NBS-418

(RCV. 7-14.64) USC OMM-OC 260) 0-P64

Fig. 4. Bremsstrahlung-induced fission cross section per equivalent quantum.

Fig. 2. Electron-induced fission cross-section data. Different 428

symbols for the same isotope refer to different targets.

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF 3TANOAHOJ
REF. S. Ramchandran and J. A. McIntyre

Phys. Rev. L72j H53 ( 1969)

METHOD

EL EM. SYM.

Bi 209 33

REF. NO.

69 Ra 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,G LFT 8,8 D 3,8 NAI DST

(7.416) (7.416)

(7.149) (7.149)

W(9) ~ [l + a P

2

(cos6 )] 8,3 = 7.416. 7. 1Z.9

over

FORM NBS-418

(REV. 7-14-W) USCOMM-OC 2e010*P«4 PHOTONUCLEAR DATA SHEET 429

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
8

L.

V.

Groshev,

V.

N.

Lutsenko.

A.

M.

Demidov.

and

V„

I.

Polekov,

Allot

of

Comma

Spectra

from

*

R.

March

and

G.

Ben-Yaacov,

Nuclear

Research

Center—

Negev

Report.

NRCJC-IM.

1

961.

Kaiiathe

Capture

ef

Thermal

Seutroni

(Pergamon

Prc

is.

Inc..

New

York.

1939).

(unpublished).

8

E.

B.

Shera

and

D.

\V.

Hafemelster.

Phys.

Rev.

ISO,

194

(I960).

8

L.

V.

Groshev.

A.

M.

Demidov.

G.

A.

Kotelnlkov.

and

V.N.

Lutsenko,

Nud.

Phys.

SO.

46J

(1964)

;

*H. H.

Bolotin

(private

communication

from

L.

M.

Bollinger).

G.

T.

Ewan

and

A. J.

Tavendale.

Nud.

Instr.

Methods

26,

111

(1964).

*

See

ReV.

24a.

< m ~ 3

l

3 S os

H- If If © © ©

5 3

os-2

e If e 'x o

8 a s

H- H- i ©05

2 8 i

if if ? — © ©

» 3

k»

s

%

sr * 2.

1 5

pmn<

l*t

V a J* 1 I a

Ok

'O w o

l- T 2

i i i. I P

^ • a?i

*«1 K»

\<o s

IO s«o M

r i

r * s

i, d :

S35"i

*

fi

1

i

*0

9©

9

os

5

5<

cn

e

33

«

*<o

\ * If

o o

8 8

Ifo

o

M M

£

* 8

8

H- 8 8 U Ob

S

ff s

If 8 3 8

© O

If

H-©soIf If 8 8 8

8 8 8

If H- If © o ©

8 3 8

ft ft ft * im 'em on on os os ooOO osa If If

i h i i i g i ;

I

J

s

3?. <*»

srs w<sa>©

f?

It

430

Table

II.

Experiment

compared

to

theory

assuming

a

pure

dipole

transition.
REF. Yu. N. Ranyuk, V.M. Sanin, and P.V. Sorokin

Ukr. Fiz. Zhur. 14, 408 (1969)

EL EM. SYM. A

Bi 209 83

METHOO REF. NO. 69 Ra 4 egf

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,F ABX 35-140 C 40-140 IRK1

4PI

Yields of nuclear Fission reaction for Bi, Au and Pt by bremsstrahlung were measured by means of solid state track detectors in the energy range from 40 to 140 MeV.

The fission threshold for these nuclei is higher than the giant resonance energy which:

allowed total photofission cross-sections to be calculated by the yield curves. A rapid increase of the cross-sections with the photon energy testifies to the preference of the statistical model within which the fission thresholds oi target nuclei were

calculated. The results of the present experiment may be used to obtain information on the

shoton interaction mechanism in the energy region between the giant resonance and the- fhreshold of meson production where this problem is still obscure.

Phc 4. BiAHometiHH jumuibHoi i HeHTpoHHoi umpHH: —jam' po6oth [5] a.ih cyMiuii isotoniB Bi307

i Bi30*.

P;ic. 2. Bhxoah yaa.«KiB noainy: O—aaui aaHoi podOTH, — aaHi podom {31 Cy- m.ibHi Kpnai oaepwaHi niarowKoio 3a $op- Myaow (4).

form N3S-418

(REV. 7-14-84) USC OMM-OC 28010-P64 PHOTONUCLEAR DATA SHEET 431

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS
HEF. H o Tsubota, N. Fujiwara, H. Ishimaru, E„ Tanaka, T. Aizawa,

M» Kanazawa and N. Mucsuro

J. Phys. Soc. Japan 26, 1 (1969)

EL EM. SYM.

Bi 209 83

METHOD REF. NO. 69 Ts l egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,N NOX 15-26 C 26 SCI- D 7- DST

(25.5)

t

Paper gives summary of angular distribution measurements.

Tabic I. A summary of the results. W(0)=

A

-r 3 sin* 0-rC COS 0

Target i E.a(MeV) A B C B/A C/A

Bi | 7.4 0.65=0.02 0.35 ±0.11 0.16±0.05 0.55 ±0.20 o II o o

| 8.7 0.66 ±0.01 0.34±0.C6 0. IS ±0.03 0.51=0.10 0.27=0.06 Pb 7.4 0.45 ±0.05 0.55±0.il 0.10-0.01 1.22=0.25 0.22=0.04

| 8.7 0.75 ±0.03 0.26 ±0.03 0.17±0.03 0.22±0.03 0.22=0.03 Ta 7.4 0.69 ±0.02 0.32±0.03 o.o3±o.tn 0.46±0.05 0.05=0.02

! 8.7 0.80±0.04 0.20 ±0.02 0.05±0.03 0.25 ±0.04 0.07=0.04

G ! : e 0.2-

01 _J 0* 30* 60° SO* 120* 150* ISO’ EMISSION ANGLE

Fig. 6. The angular distributions of fast photor.eutrons from 3i irradiated with 25.5 McV

brcmsstrahlung.

(a) The neutron detecting bias energy is set at

S.7 McV.

,b) The neutron detecting bias energy is set at 7.4 MeV.

FORM HBS-418

IRCV. 7.14.64) USCOMM.OC 2601 O* P64 PHOTONUCLEAR DATA SHEET 432

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS
re r. V. V. Verbinski and W. R. Burrus

Phys. Rev. 17Z, 1671 (1969)

METHOD

EL EM. SYM.

Bi 209 83

REF. NO.

69 Ve 1 hmg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE TYPE RANGE TYPE RANGE

G,XN SPC THR-33 C 33 TOF-D 0-14 DST

Table II. (-?,*) reactions induced by 33-MeV end-point

thin-target bremsstrahiung.

Target

£y giant resonance peak (MeV) « r* (MeV)

Thresholds

(>.") (y.fin) (7.2a). "Al '-22 S3* 3.07 ±0.1 13.1 19.4 24.4 93* 3.07 ±0.1 "Pb -13 00* 1.50 ±0.1 S.0 14.8 14.8 Ml* ‘ 1.43 ±0.1 •Pb —13 90* 1.52 ±0.1 7.4 14.8 14.1 HI* 1.52 ±0.1

•"HI —13 w l.«*±O.I 7.4 II.

1

I4J — . Ml* 1.47 ±0.1

• from pkH of laC#<fi)/*«£wa] mai *.

FlC. 7. Evaporation -analysis plots of neutron spectra from

(7,*) reactions. The logarithmic

plots of o (/•;)/(»</•.*'") show *

moderately good straight-line ^

fits. Values of T, the magnitude

of the reciprocal slope, are £

shown. In some cases, T is —

slightly higher at 90° than at ^

141°, indicating that a weals component of direct emissions

is present. These are preferentially emitted at 90°, the direc- tion of the electromagnetic

field.

form NBS-418

I (REV. 7-14-041

I USCOMM.DC 2SOIO-P04
REF. Lo A. Currie and R. H. Rodriguez- Pasques

Nucl. Phys. AI52, 49 (1970)

EL EM. SYM.

Bi 209 83

METHOO REF. NO. 70 Cu 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

G,T ABY THR-90 C 90 ACTI

4PI

Tabu 4

Bremsstrahlung-weighted and integrated (y, t) cross sections (90 MeV)

I7A1 Zn Sn 1#*Bi

o.i (mb) 0.072 0.007* 0.065 0.007, o0(MeV • mb) 4.0 0.4, 3.8 0.41

Fig. 3. Experimental (o) and statistical model (x) absolute, phototriton yields (.90 MeV). Yields, expressed in terms of “effective cross sc ; ms" (/ib), are plotted versus mass number. Limits for the experimental >iclds represent ± one standard deviation; those for the calculated yields correspond to

limiting values for the level density parameter (— ) and for the photon absorption cross section (c).

FORM NBS-41S

IW fV. 7-f 4.«4> W9COMM.OC 26010-P64 PHOTONUCLEAR DATA SHEET 434

U.S. DEPARTMENT or COMMERCE

NATIONAL BUREAU OP ST ANDAROS
B. Schrader, G. Nydahl and B. Forkman

Nucl. Phys*. AU3 . 449 (L970) Bi 209

METMOO REP. NO.

70 Sc 1 egf

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

TYPE RANGE TYPE RANGE

ANGl E

G,F RLY THR-700 C 700 ACTI

4PI

Table 3 Measured cumulative fission yields relative to A 91 (***Th) and A “ 105(*#,Bi)

Mass

number 300 (MeV)

Thorium fission yield (%) 500 700 900 (MeV) (MeV) (MeV)

1100 (MeV)

Average Bismuth fission yield (%)

700 MeV

85 1.3 0.98 0.70 1.4 1.4 1.1 0.46 91

' 5.5 5.5 5.5 5.5 5.5 5.5 2.1 92 5.3 5.2 6.0 5J 3.2 95 4.8 97 4.4 6.2 5.2 5.3 5.1 99 3.1 4.0 4.5 5.5 5.1 4.9 103 3.1 5.2 5.8 5.1 105 3.5 4.5 5.4 6.0 6.0 5.0 112 4.6 6.2 6.8 7.5 8.3 4.0

131 1.3 Z7 3.5 2.5 132 1.9 3.5 3.0 2.2 2.6 133 4.0 4.1 5.5 5.0 4.7 140 4.9 6.0 6.2 5.7 141 4.5 5.6 5.1 143 2.9 4.6 3.5 4.3 5.3 4.2

detector 30 cm* 7 mm 7 mm 7 mm 30 cm* 30 cm*

it is possible to define an average curve in the regions A sj 97, A ^ 131. The increase ofyields in the valley is considerably greater than for uranium.

Fig. 7. Relative fission yields of J0,Bi at different irradiation energies. All yields normalized to Yl0i = 5-0 %• Data at 85 MeV as given by Sugarman •). The curve is drawn through the present data .points. form N8S-418

(REV. 7-1 4*64) USC OMM-OC 20010-P94

u.s. department of :;mm£3cc

NATIONAL. BUREAU OF S' a*. - A a u S PHOTONUCLEAR DATA SHEET 435
V. Emma, S. Lo Nigro and C. Milone

Lettere al Nuovo Cimento 2 , 117 (1971)

EuEM. SYM.

81

A

209

z a

83

METMOO REF. NO. 71 Em 1 egf

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

G.F ABY THR-999 C 300-999 FRAG-I 4PI

999 = 1000 MEV

Taulk I. - FUnion erwa-MfltoM pee photon between 300 noil I (>00 MeV. Our ri-Niillit I’reviiiiiM n-nultn

<rtk (lull) ii, (mh) <rt (mil)

iti 7.1! ± 0.3 7.0 ± 1.3 7.M d. o.o (*) 7.8 ± 0.8 (»)

i'i> 3.3 !; 0.1 - 3.3 .i. 1.5 3.4 0.3 (»)

15-

0' . I I , I 1 1 1 400 600 800 1000 1200 £ (M*V)

riff. 3. - our <-x;»Timrntnl data of tlio phocnflusion emas-scction per equivalent q uantum'for Hi and I'b compared twill pri-vu.ii* n -nU«. Kxpvruiicntul point* : • our data calculated a* mean value* of tliu results obtained with tliin and (luck targets; a ref. (•); o, a ref. (•). Tlic dashed lines arc the best curves

calculated by the 1«. wit- square* method taldnff into account our result* only. 1) Bi, 2) l*b.

() J. A. J uni.. i.u.i.v and . M. STKixtn: Phut, tire., 106. JSS (193T).

,*> ii. <1. 1>>. CiMViuio. «•. COUTI.VJ, K. Dtt GlVUICtt U. 1'uTt.NU aud U. lii-wnn-i/i : .Vuoro Cimfulo,

32, 203 iiiv.il.

(•) A. V. Mituo. v.vova. Yu. X. Ua.xtuk and P. V. Sorokin: Sue. Joum. .Vurf. Phut., 6. 313 (lOtfS).

form N8S-418

IStV. 7.1*. 64) use OMM-OC 28010-Pea PHOT0NUCLEAR DATA SHEET 436

U.S. DEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANOARCS
ref. K. Shoda, A* Suzuki, M. Sugawara, T. Saito, H. Miyase, S. Oikawa

Phys. Rev. C2, 1999 (1971)

ELEM. SVM. A

Bi

! Z

209 33

MPTHOO RE P . NO.

71 Sh 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE

' oetector

ANGLE

TYPE RANGE TYPE RANGE

E,P ABX 10- 14 D 17-21 MAG-D 7- 16 125

(123.5)

The radiative widths of the £1 transition through the ground lsobarlc analog states of 2OTT1 and 2MPb in 2,2 Pb and 20*Bi, respectively, were determined from the cross section of the

(e,t‘p) reaction. The results are 98 and 140 eV, respectively, after the correction for the interference from the continuous part of the reaction. They correspond to an effective charge of 0.S6 and 21, respectively. The £1 matrix elements were determined and used for

the estimation of d matrix elements |t{"/r”| . The result is 0.055 in natural units (IC=c*mt 1) for the /-decay mTH3sl / i~t )~" wPb(3pl /i“l). In the case of 20,Pb(2^|/j)— 20*BiO.Aj/j). the result is 0.043, which is much larger than die theoretical estimate. For the £1 lsobarlc analog states of the first excited state of 201Pb in 2MB1, the radiative width and the effective charge were also determined to be 170 eV and 0.46, respectively.

20.0

0262 0

206

Tl

2.61

208Pb

FIG. 1. The level diagram for the relations of £1 IAS and 0 decay. The energy levels are indicated in units of MeV. The single-particle configurations of the relevant states are Indicated.

over

form NBS-418

(R EV . 7-1 4-04) USC OMM-OC 26010-P64 PH0T0NUCLEAR DATA SHEET 437

U.s. OEPARTMENTOF commerce

national bureau op stanoapcs.
TABLE L Radiative widths of £1 IAS in mPb and 2MBi. The errors Include statistical uncertainties only.

Nucleus Ground

state IAS (MeV) rr <eV) rtAS

1 1 (eV)

2(T + l)r^AS

(keV)

pi AS 2Gr+i)

pi AS 2<T-1«-A ip

“’Pb f OPi/t”

1 ) f<3sI/r‘> 19.6 160*50 98*30 4.4* 1.3 0.25*0.08 0.32*0.09

***B1 T* 18.7 180*20 140*20 6.3 *0.8 O.4O*O.0S 430*55

J**B1 fdW 19.5 220*30 170*20 7.6* 1.0 0.43*0.06 0.21 * 0.03

FIG. 2. Examples of the proton energy distributions. The positions expected for the maximum end-point energy of the protons are shown by the dashed vertical arrows. The solid vertical arrows indicate the position of p 6 through the ground IAS.

* 10"

FIG. 3. Cross sections of the ^Pb and 2MBl(e,«'p) reactions at fl" 125.3*. The positions of the IAS are shown by arrows.

438
REF.

K. A. Snover, J. F. Amann, W. Hering and P. Paul

Phys. Letters 37B , 29 (1971)

ELEM. SYM.

Bi 209 83

METHOO REF. NO.

71 Sn 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

P.G ABX 13-22 D 9-18 NAI-D 90

Table I A comparison of the ox|»‘ rimenl.il y-ray transition strengths r.,<exp) with theoretical single-particle Kl strengths Ty <(h> for the analog reaonanccs.

Transition rv

(exp)* Vv)

Tv

(th» 7(eV) r

y

(exp)/Ty(th)

*k9/2 - *7/2 110(660) 380 0.30(1.8)

2*9/2

ll, 9/2 <10 -1 -0.33(2.0) u ll/2

** lh9/2 ->190(1150) 565 0.20(2.2)

3d

5/2 “ 2f7/2 40(440) 200 0.40(1.5) 3d 5/2 — 3P3/2 95(360) 240 -0.14(1.3)

2* 7/2 " lhV2 -15(140) 105

2* 7/2 ”* *7/2 <10 20

<2*7/2 * **3 /2 ) ‘*5/2 * 3|>J/2 > —0.20(1 .2)**

•Values obtained from the solutions with ®= 0°, awl In parenthesis, for A(f> a: -90°.

•• Ratios of experimental and theoretical resonance

cross sections computed for the sum of nil the poslble transitions.

Flg.2. 20Hpt,,pi y)20‘Jgj excitation .curves at 9

- 90° for transitions to the lhg/2

. 2f 7/2 and 2fs/2 - 3p3/2

final states. The absolute normalization for the ordinate is given by 0.94 * 0.19 ub/sr per 100 counts/48 4C. The

energies and configurations of the known single-particle analog resonances are indicated in the upper right. The solid curve represents a least-squares fit to the data, as described in the text.

FORM N3S-418

(REV. 7-I4-S4I USCOMM.OC 2S0I0-PS4 PHOTONUCLEAR DATA SHEET 439

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS
I REF. G„A. Vartapetyan,^ N. A. Demekhina, V. I. F.V. Sorokin and A.G. Khudaverdyan

Yad. FI*. 14, 65 (1971)

Sov. J,—Hue I. Fhys.—14, 37 (1972)

METHOD

Kasllov, Yu. N. Ranyuk,

ELEM. SYM. A

B1

REF. NO.

209 83

71 Va 4 egf

REACTION RESULT EXCITATION ENERGY

SOURCE detector

angle

TYPE RANGE TYPE RANGE

G,F ABX 100-999 C 100-999 TRK-I 4 pi

! PkoiofimiK ,Htd> pm cm' pm ^amltai hwm

WaV «u \jm

j Th*

I ~ i Ta100 (226*20) • I0*» (120* 12) 10- ” (S0=S) I0*» iu70sn.<jri) iw (3.0 = 0.41 I0-*

120 (1 5-»2)IO* (1 4 s n.2) IO » M0 (2/; *0.2) IU-* • (2 0-O.2j.IO-*

ISO (240*21*) I0*» (63*7) 10 "

160 1 A 1=44.3). IU*» 1 3.7 *'*«)• |<r •

laO i4.on*S) • 10 * i5 5***M I0-*

20* (265*30) -10** (ISO* 15) • IO-* (72*7) 10" II..1 *<*,6) in » (• 2 * U2S) 10 » 14.9*05) (0 •» 2JU (•..lx n.iil 1'*-* (1 1 *.0.1)10 » (•.2*0.8) - 10**

•40 11.2*01) IO-» (15*0.2) 10 (IJ*O.I)IO-»

2 IS (156* 16) ID**

•tiO Il5=«i.2) 10° (I.K = 02)l0-» 1 1.8*442) I0-*

•.’-•I (160-16) I0*» (85*9) IU*»

.too 12.2s 02) 10-R <2.3*0.21 IO-"

.14*1 lJ.Ssi'4> lO'R (4 4=0 4) - 10**

J7l» (4 2*1*4) 1" » <5 M -0 5» :j n

1U0 (318*30) 10-" iirs*2u)io r

4.**' (lOeftlD-IO-"

4.U» *) 4 - .. ;«* "

0.;- • • "J "» " O* • '.'*'1.7) III R ,<l . •

. -

c,t*. (!**>.- 211) :o " .113= 12)-

1

1!

' >7) • •* "

5'.»‘ 1 346*351 10*r

i •• »2‘ *5 >Ss3.<*. : _

" J: 12* • 5* 0.'« • " "S' M.2- •.* •'-*

( 'n

’ iJS=Mi :o-”

.'J 3S6*40*.|0- r

:*a*. .224=23) (re>='4» io- r

Ml*

.

’.1 'll.;*!.!) ;)-» / 1.0*51 J >-T :Sc , 410*40). !0 3

f3>».**40| I0-" <2)7 = 23). 10*” ( 136= 14) . ;** '

’ lit tl2J*'J)-10 -

i i. •. • •* .V‘ • 3.'*V TO--

I J. J * i 3.5 * 1 .4 » • i 0“ " •1 = .?

’.mm-’ 1 163=20) -lO-" .132=15) 10 -

4(. 14.3- 1.4) “

2.7='\2*

'

' 4*5 = 45* :*.» r i2W = 2«)-:0- ,:

! 133 = 15* '0--

• (*•.>- O •’:) •* ‘m •’•..S-slAilO-R

'4-v - 43.* • 10

r l IV* r ;4)-!0- r -

1

4

15s 43) l*.*-" t2')2 = 24i !0-R I tS5= 16 )

• 10" v

• lo- r i24S*2‘., -10 ” » loJr i5) • :o i; ' • - .!»• • I* *.” ~ '-r 155 = 45) • !0‘ a ! 0 1140=13)10"

•

: J » 3»'=5C> 10*” (25l±25)-l<.—

4 14** - !5) !«'- r Ac**.*. .») • ’v)- p

• ’5. - ;.6j • •-

• '*. ’ r 6.6 • ". -»

- j» *'. .76 - Sc; !0*° 1204=27)I0*S lS2=lS>-l"- r

4*jvy 1 4"T .tin) • |‘j" r r-'

,»*s2.')) • lo-** • 20.2 = 2) -IO-R i J.a-0.21 !tf“ 6>=0.7) : J-*

' • dl i'*5 10-

F

• 10- r 1

2

1 *5 = 2i ) If*-** 202= 2 i 10-" 16.3 *v.f' ;c*»

form N3S-418

(REV. 7*14.64) use OMM.OC 26010* P64 PH0T0NUCLEAR DATA SH

FIG. 3. Solid heavy curve -photofission cross section of Br*’ \u'm. TV*' Dashed curve-the same cross section, integrated over the Schiff bremsstrahlung spectrum (yield per equivalent photon as a function of bremsstrahlung maximum energy). Thin line -cross section for yp in- teraction. multiplied by the number of nucleons in the nucleus and by

the fissility. 44Q
REP. W. C. Barber, E. Hayward, J. PIGNS-72, p. 313 Sendai

METHOP

Sazama

ELEM. SYM.

B1 209 83

REF. NO.

7 2 Ba 16 hvm

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

$ G,G RLX 15.1 D 15.1 NAI-D 90

r? _ (do-/ dQ ) || to polarization vector

(dc/dfi^ to polarization vector

POL G ; ALSO G/

Table 1. Results and Comparison with Theory

Target

dc\ (Arbitrary

Hn'J. Units) n(exp) n(DCM) ri(HD)

Cd 0. 39±0.05 0.09±0.08 0.19 0 Sn 0.65±0.06 0.11 ±0 . 06 0.067 0 Ta 1.74±0.14 0.14±0.07 0.180 0.155

Au 2.08*0.15 0.17±0.06 0.067 0

B1 2.65*0.26 0.02±0.06 0 0

FORM M3S-41*

l«EV. 7-l4-«4> USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 441

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. N„ A. Demekhina, V. I. Kasilov, A.V. Mitrofanova,

and P.V. Sorokin

Yad. Fiz 16, 911 (1972)

Snv- T Mnrl. Phya 16.^-507. (19Z3)

METHOD

Yu. N. Ranyuk

, EL EM. SYM. A

Bi

REF. NO.

209 83

72 De 12 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G.P NOX THR* 2 C 0* 2 TRK-I DST

do/dft ~ 1+2 v/V cos© - P sin2 © * ENERGIES IN GEV

1-0 ft

FIG. 3. Anisotropy coefficent as a function of target-ni£-leus atomic number. Points: O-results of the present work, A-results of Kroon and Forkman ( 14

]

.

Table H

Dement Ernua. McV x

: w<x* — r*> a - 2r/V* • -Ir.-l'n

v.lMcV/

nudeon)** e. MeV

3000 0.10 0.99 -0.031=0.025 0.042=0.005 0. 180-0 023 U’* 3830 055 C.85 e.on=o.oi: 0.018-^0 002 0.045-0.'.* 15 5100 0.59 0.85 0.040=!) 017 0.054=0.006 '•.406=0 031

700 (l.y.5 0.45 0.155=0.017 O.GOl —Q.Cf-9 0.431 -0.052

iceo 1.14 05 “0.1-85=0.017 0.047—C.C0.5 0.2.'.’ -0.021

Bi 1'-’ I2C-0 0.76 «».s 0094-0.0-0; 0.053-0 006 05:4—1.0.0

1300 091 U.4 0.00'3=0.0:S fi.C55-C.CG6

0 63

.

0.85 0.054=0.018 C.020=0.GC2 0. W *TL —O.COt 350 0.097=0.010

430 0.1- -5=0.013 WO o.cyi=o.o;o 645 0.87 0.55 0.054=0.015 0.044-a004 0.187=0.018

700 0.116=3.010

600 0.45 0.95 0.008=0.020 0.0C5—0.001 3.020-0.002

Au' B 850 0.121=0.010

9C3 450 0.001 0.124=0 018 0.064 -aoos 0.400—0.040’

1CC0 0.95 0.4 0.101=0.017 0.090=0.010 0.052=0.005 O4i,52-S-C.0*i5 1300 0 87 0.4 0.094=0017 0.C49-—0.005 0.234-0.024

I4C0 0.90 C.5 0.075=0.015 aar? -0.004 0. ! 4 7 —0.0 ! 3

3000 154 0.15 0.122=0.017 C.G55 —0.006 G 410—0.0411 36u0 0.7 063 0.093=0.17 3.048=0 003 0523=0.022

«)0 0.8 05 0.087=0.013 0.G+4 -0.004

700 0.147—0.310 Ti" 1145 55 0.001 0.144=0.018 0.072-0.007 0.445-0.04

7" 1480 155 0.15 0.127=0.013 0.004—1.006 C.370—0.037 5100 202 0.001 0503=0.020 >0.100=0.010 05'.’9=C.39O

Note- X* is the value of x* pet degree of freedom, q) is the probability of the

value of x\ a • 2v/V is the anisotropy coefficient, e is the f'snoruna-nucleus kinetic energy, v is the lissioning-nudeus velocity.

FOAM N3S-418

(REV, 7-14- 941 USCOMM.OC 28010-PS4 PHOTONUCLEAR DATA SHEET 442

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
V. di Napoli, A. M. Lacerenza, D. Margadonna, S. M. Terenzl

Radiochem. Radioanal. Letters 11, 99 (1972)

MCTHOO

Bi 209 83

REF. NO. 72 Di 10 hmg

REACTION RESULT EXCITATION SOURCE OETECTOR

ANGLE ENERGY TYPE RANGE TYPE RANGE 6 ,2N ABY THR-999 G 999 ACT-D 4PI

G.3N ABY THR-999 C 999 ACT-D 4PI . G.4N ABY THR-999 C 999 ACT-D 4 PI G.AU* ABY THR-999 C 999 ACT-D 4 PI *

G,SE ABY THR-999 - C 999 ACT-D 4PI * 5 AU ISOTOPES OBS ** SE = SELENIUM 75

Fig.l. Cross sections per equivalent quantum of the photoproduction of 207 bi, 20®Bi and 2 °5Bi from 209 Bi vs. the mass number A

Fig. 2. Cross sections per equivalent

duction of gold isotopes frorr bet A

443

|uantum of the photoproFORM NSS-4IS •09Bi vs. the mass numIRCV. 7-14-84) use OMM-N 05-0 C PH
REF. EL EM. SYM. A Z

METHOD

H. E. Phys.

Jackson and K. J. Wetzel

Rev. Letters 28, 513 (1972) Bi 209 83

REF. NO.

72 Ja 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G ,6 RLX 10 D 10 SCD-D 90

(10. 83) (10. 83)

RATIO; RAMAN /ELASTIC

We have measured the differential cross sections for the elastic scattering of 10.33- MeV photons by U, Th, and Bl targets and for inelastic scattering to the first excited

states of the residual nuclei over a range of scattering angles. The inelastic scattering

is found to be significantly weaker than predicted by currently accepted models of the

giant dipole resonance.

To establish that the anomaly we observe was

not limited to uranium, we repeated the measurements on a second deformed actinide target

( aMTh) and also on a spherical nucleus (ao,Bi) for

which no observable Raman component was expected. For *”Th at 90° the observed ratio is 0.7 ±0.1, while for M®Bi no inelastic scattering

to the first excited state was observed; i.e., the

experimental ratio is «0.1. Thus the evidence

suggests that the Raman to elastic ratio we find may be characteristic of the deformed actinide

nuclei.

form N3S-418

<R EV. 7-1 4.04) USC OMM-OC 26010-P64 PH0T0NUCLEAR DATA SHEET 444

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. K. Shoda, M. Sugawara, T. Saito, H. Miyase, A. Suzuki, S. Oikawa,

and J. Uegaki

PICNS-72, 321 Sendai

ELEM. STM. A

Bi 209 83

METHOD REF. HO.

72 Sh 10 Jim.

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

E,P ABI 18- 20 17- 21 mag-d n^T

JiL SPC 19- 20 18- 21 -DSTI A STATES

dadk

Fig. 2 The (e.e'p) cross sections of

20, Bi. The positions of El IAS are shown by arrows

.

Fig. 6 Photoproton energy distributions from 29, Bi.

Those from (e,e'p) are shown in the left hand

side. Those from difference method are shorn

in the right hand side. The results are compared with the proton groups determined by the

(p,p') results.

Table 1. Examples of radiative width of IAR obtained from (e,e'p) experiment in lead region.

The result from 298 Pb(p,y0 ) are also shown with

parenthesis. (Ref. (5))

5K.A. Snover, J.F. Amann, W. Hering,

P. Paul, Phys. Letters 37B , 29 (1971).

form N3S-418

(REV. 7-14.«4> U3COMM.OC 26010-P64

Nucleus Ground

State IAS Ex

(MeV)

r A

(.*>

rA

2 cm) il

A V7

rA 2(T+1)1I_

r sp

20 7 Pb 3 pT/z 3 *7/2 19.6 98±30 0 . 25±0 . 08 0.32+0.09

20 9 3i lh,

y

2 2

8<j ! 2 18.7 140+20

( <10 ) 0;40±0.05 430+55

( VD.33 ) 299 Bi lh,y 2 Ull/

2

445

19.5 170±20

( M.90 > 0.43±0.06 0.21+0.03

PHOTONUCi ( 0.20 )
1 REF. B.W. Thomas, D.M. Crawford and H. H. Thles

Nuclc Phys. A196 , 89 (1972)

ELEM. SYM. A

Bi 209 83

METHOD REF. NO.

72 Th 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle

TYPE RANGE TYPE RANGE

G,XN RLX 7-20 c 6-19 BF3-I 4 PI

FORM N3S-418

IR EV. 7-1 4. 041 U3COMM-OC 26010-P64 PHOTONUCLEAR DATASHEET 446

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF ST ANOAROS
REF. R. F. Barrett, J.R. Birkelund, B.J. Thomas, K.S. Lam, and H.H. Thies

Nud. Phys. A210 , 355 (1973)

EL EM. SYM.

Bi 209 83

METHOD REF. NO.

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,N NOX THR- 27 c 10- 27 BF3-I 4PI

MEAN NEUT ENERGY

1

H. Baba and S. Baba, Japan Atomic

Energy Research Institute report

JAERI-1183 (1969)

.

2H. Baba, Nud. Phys. A159, 625

(1970)

.

15T.D. Newton, Can. J. Phys. 34,

804 (1956).

Fig. 15. Ratio attJat versus atomic number A. Here aotn is the level density parameter taken from

the neutron resonance work of refs. ** ,

) t and a

,

is the level density parameter derived from the present (y, n) work. Filled circles represent points where nuclei in the neutron resonance and in the

(y, n) experiment were the same. Open circles represent points where the respective nuclei were approximately matched. Triangles represent points which are based on measurement of neutron mean energies at two bremsstrahlung energies only.

(over)

form N3S-418

(R EV. 7-1 4- 44) U3COMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 447

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANDARDS
Target

N

Goodness

£.(24)

T

a

9

a*.

a^Ja,

(residual

of

fit*)

(MeV)*)

(MeV)*)

(MeV

1

)*)

(MeV-‘)»)

nucleus)*)

no

wi|h

p.c.

p.c.

-

i *

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3 - a o

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vs 3 a sr I i*

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o g

75 —

u |- u | T §

O « £

- •§ J i

75 e 2 E e o E

"

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^(vw) 4« aa y £ 2

3 S 2 S

J*

-O j*

$* P

I I I oo 91 rl S

JD Q

b• — « «

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“i m os

Os ©

ri O vi

r** so © © o

«n ^ sn so N N — — ©

U- O 0

lu x o

i Osrl

oX

o o I

ir £ ?

6

0 u.

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' —

3< a.

« £

-« |s *;r 2 * - 2 2 n * 2 r! * 2 ^ J-, ^ ^ £ £ £ V - « o 4 £• o 2 . -

- (N ri r< 5 nnis- 5 «2nS o m S K §

v> r* 00 ©s © — © — r~> «• rn r-» **»>/> r*. r- r^p^r^c^oooo oo oo oo oo os ©s ©s ©s os ©s os ^ oo os - os r- ^ 9s Os ^ © os ©

w J9 £•

CL, )« Q

o w £ yj E ai ^ H t- > 3< a,

= s > - § 2

o s p

- a *

E 5 S 'I s ° »,»

.5,0 c ^

S >d c >. a , 5 2 * 3 B. II e > r a*

• > c

• £ ? 2 e j “ a

_ E

e £ •; S o a i £ c u

“ e

E I 4 ? - cC

60 5

.£ 5 3.2

. E

e 2

|

a

-i

.5 u —

>u2

i (N

'J 3 § <5 5 = £ s 2 u “ u

o i .o 5 ° p * *» 2 a 2 « S ^ <_ 2 g, |

C o „ £ 2

u S p

12 p

'5 o a

S. a >,.h E

U S “ 2? 2 ^o e " g 't o w g 5

© O *3 w 3

<* 00 — c

b V ?3 JZ

(J U > V_w

§ - - 2 5

"3 * * -

t) — t) s-r 2 I s a

C a 3

• 3 Q, C O ill

s a » "3-2

Q. fcC2 II 2 .o. ft! £2

c ^

•2 §

2 |E r x 1 2 — -5 «

E

o a •£ >-^ </» O UO

© u 5 c w

5

0 3 g «

§ S |

5 I

•o E 5 S £

I !

§«

1 | a 1 S

u 3 •• o js 3 5 o . -

^ ^ it im l 2

a *

«* 3 e *J t. .2 £ 1 II o 4 » 82

3

II 5 » O u

: 2a-5 Ss

Pc?£5 a =“

i s|l til

s

rs =-|I s £>

2*5 jS 13

*: o ?^ -a S o _ P 2

2 ‘ | » si > ffl Z _J 3 «

0

V sz 2 H

00 t ? C

*2 ^ Jo

. f" c

E E 5 2 si

< s

448 5
REF. S. Hayward, W. C. Barber, and Jed Sazama

Phys. Rev. C8, 1065 (1973)

EL EM. SYM. A

METHOO

B1

REF. NO.

Z

209 83

73 Ha 3 hmg

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

$G. G RLY 15 D 15 NAI-D 90

(15.1) (15.1)

POLARIZED PHOTONS

TABLE D. Results.

Target

dcP/dSlf da^/dQf

Arbitrary units nr 0 tUDCM)

Cd 0.042 a 0.028 0.39*0.05 0.11*0.07 0.09*0.07 0.19

v Sn 0.084 *0.036 0.65*0.06 0.13*0.06 0.11*0.06 0.07 Ta 0.24*0.10 ' 1.47*0.14 0.16*0.07 0.14*0.07 0.20 W 0.52*0.10 1.66*0.12 0.31*0.07 0.29*0.07 0.20 Pt 0.23*0.08 1.94*0.13 0.12*0.04 0.10*0.04 0.08 Ao 0.39*0.11 2.08*0.15 0.19*0.06 0.17*0.06. 0.07 Bi 0.10*0.15 2.65*0.26 0.04*0.06 0.02*0.06 0

form N3S-418

(REV. 7-14-64) USCOMM-NBS*OC PHOTONUCLEAR DATA SHEET 449

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
S. K1awansky , H.W. Kendall

Phys. Rev. C7, 795 (1973)

METHOO

A. K. Kerman, and D. Isabelle

EL EM. SYM.

B1 209 83

REF. NO. 73 K1 1 hmg

REACTION RESULT excitation

ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE

B,B/ FMP 0-125 D 101-245 MAG-D DST

quAsisiAsric

Experimental Poiots

| Points with Predicted QuOsi'Elastic Curve

Subtracted —Solid; Predicted Curve HO-EPW.V *-30+

0.1 KE with e~distortion ---Visuo l Fit 0*78.7*

FIG. 3. Experimental points for 9 = 78.7’, q =250 (a), 220 (b), and ISO MeV/c (c). The solid line is HO-EP'V with V =—30*0.1 KE (MeV) and electron distortion. Thex’s represent the result of subtracting the HO-EPW result fr;rr. the experimental data.

(over)

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF 3TANDAROS

form N3S-418

(REV. 7® 1 4» 641 U3C OMM.QC 26010-P64 PHOTOHUCLEAR DATA SHEET 450
_l : : I ! Z 25 53 tz ICO 125 150 ENERGY LOSS (M«v)

FIO 1. inelastic spectra for electrons on * 14 Bi. 0 -TO.o’, q = 2‘JO, 240, 230, and 280 MeV-c. Tee data

points are interpolations between measured joints. See -’'.xi for further discussion. Solid curves are -’.euo.i fit? to ;he points

.

FIG. 5. Excitation form factor squared as a function of q for 8 = 81.0*, Av = 3 MeV, i^ie, 20, 24, and 28 MeV.

Oqe as in Fig. 4. See caption to Fig. 4 for discussion of the errors.

FTG. 4. Excitation form factor squared a3 a function of q for scattering angles 8 = 74.3, 76.5, 78.7. arid 81. 0‘ obtained by using Eq. (11) with va = 20 Mfev, and aa =3 MeV. v is the HO-EPW result with V =- i0 *0.1 KE

•MeV) and electron distortion. The errors shown are

statistical only. The largest contribution to the uncertainties in the form factor arises from uncertainties in the predicted quasielastlc distributions. This contribution i a not included in the errors shown in the figure but

is discussed in the text.

451
r ef. S. M. Kocimski* and 5. C. Cook

PIGNS-73, Vol.ZI, p. 1059 (1973) Asilomar

EL EM. SYM.

Bi

A

209

z

83

method REF. NO.

73 Ko 3 egf

REACTION RESULT EXCITATION SOURCE OETECTOR

ANGLE ENERGY TYPE RANGE TYPE RANGE

G t N ABI 7- 30 c 7- 58 MOD1

API

G,2N ABI 7- 30 C 7-58 MOD1

APT

G.3N ABI 7- 30 C 7- 58 MOD1

API

G t AN ABI -7- , 30 G _.Z=_5S MOD1

API

SIG SN GIVEN

i leferaaeen |

l

1 tomy at al.l

1 Wyckoff

1

1

| Present work

1 (Be») |

1 23 | 137*

1

1 S3

«, (T.nj (abase?) | 2170 |

1

1 2830*100

•» (T.2n) (abase?) | 760 |

1

1 732*30

«o (T.3b) (abase?) |

1

1 163*25

1

• 172**0

•o(T,ta) (ab»=*?) | 1 88*22 1 220*100

s, (Y.tot) (3b*Ee?) | 2930*290 |

1

1 3954*150

€0*9Z/A (ob”3€V) | 3000 | 3000

Kt 3000

«-t (ob) | 1

t

1 263.6*25

•-2 (sb/Ee?) | _1_ 16.6±1.7 |!_

ii a.

16.6*1.0

•) In this case the naasaraoaot vas parforoad foe as* energy

only. Tha ecoss saetioas vara dedecad froa the ratio of tha yialds assvaing the absorption.

Table 1.

Figure 1„

MSS>418

in av. 7.1 *.84) USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 452

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUR CAU OF STANOAROS
S.J. Mecca and J.R. Rothamel

Nucl. Phya. A201 . 570 (1973)

EL EM. SYM.

B1 209 83

REF. NO.

REF.

METHOD

73 Me 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G ,G ABX 5 D 5 SCD-D DST

5 = 5.609

Table I Resonant energy results

(&eV)

V> V>

(MeV)

V> E

’y

(present work) E'y

c

) (MeV) (MeV)

5.646 ±0.006 8 5.608 ±0.005 1.3 5.609 ±0.005 5.646

5.643 ±0.005 1.0 5.663 ±0.005 5.4

4.903 ±0.008 3 • 4.890 ±0.005 0.9 4.903

4.908 ±0.005 1.1 4.924 ±0.005 0.65 4.924 ±0.005

*) Co(n,y) from ref. 3

). *) Co(n,y) from ref. 4

). c

) Ref. l ). Table 2

Effective cross-section results

Target <<ryr

-> *) (mb) <o

rr

.> •) (mb) KUyy-y *) (mb)

*0,Bi 55 ±20% 338 348 ±20%

“*«g 385 ±20% 1777 not measured

• ') Ref. l ). “) Value from ref. ') adjusted using the intensity from ref. *), consistent with the resonance energy from the present work.

Present work.

G. Ben- David , B-, Arad f J. Balderman & Y. Schlesinger,

Phya. Rev. 146, 852 (1966).

4

Nucl. Data Tablea A3 (1967); 1966 data.

form N8S-418

(R IV, 7.14.44) USCOMM-NBWIC PHOTONUCLEAR DATA SHEET 453

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARDS
Yu. I. Sorokin, V.A. Khrushchev, and B.A. Yur'ev

ref. Izvo Akad. Nauk SSSR Ser. Fiz. 17, 1891 (1973)

Bull. Acad. Sci. USSR Phys. Ser. 37, 80 (1973)

EL EM. SYM.

Bi 209 83

METHOD REF. NO.

73 So 19 hmg

REACTION RESULT EXCITATION ENERSY

SOURCE OETECTOR

ANGLE

TV PC PANGS TV PC RANGE

G.XN ABX •^1 1 N> 00 C 7- 28 BF3-I 4PI

ffrnb 4

;“V

a :*,?

: V

zoo

j'J'

ti

LlJ

$ 4 , Y i. u , >\' Vi* f

jSt“

i-:*'

il" _10

\ ’iMii Ik

(y.Zn)

(5

tiV

„ ...

0 mb

i‘00

uno

zro

I'd I Jl

K k

II

; Il 7K- 'ifUi

1° x?Vr

i^t*

v 9 “ * \

* * :

' -i-Tifii ' »* •t»i \

1 .' It ;; . v * i: • ' ! .11 '*..« I .

(Y.Znl

1 :o leV

19 7 Photoneutron cress section a(y,Tn) for 7-.u (a)

209 and Bi (b) . The dashed curves jtvi?s ’.no : r.oto- absorpticn cross section a . Phrotcnentron Crc :s ;i-

; on n,ir.w-v:t<ir Values

19 7 , , 2 0 9 _ . tor A a and Bi

PO PM N3S-418

IP E V. r. I 4.641 U5COMM.OC 26010-P64

*‘.AU : *m

c (y. Tn) [£, < UrV). McV b

/ • i.'ii

<1 IV. Tit) |£y < -J‘ MvV|. v,v b :< .17 :i A3

0 (Y. Tn) jF. — U/ MeV|. Me V b c r.o '."1

rt v |F, < ’_*) MeV|. MeV b :.si LVJli

<r.. j£, < 37 M«vj. MeV b .MS 3 47

IF, 37 MeV ] , Mev-b " 3 4 il .1 A

2

3 (£1) — ^ MtV b 2M 3.10

<1 (£2). MeV-b il. '.8 0.5. mb :.V) i;;o

£... MeV 13.3 13.2 C. MeV 4.3 4.0

u.s. oepartm£nto c NATIONAL 5LREALO- 5T A'l PHOTONUCLEAR DATA SHEET 454
rcf C. P. Swann

Nucl. Phys. AzOl . 534 (1973)

EL EM. SYM.

B1

A

209

z

83

METMOO REF. NO.

73 Sw 4 egf

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,G LPT 7 D 7 SCD-D UKN

7 = 7.18. 7.21

Table 1 Summary of observed levels ia J0 *Pb, J07 Pb and J09Bi and some of their properties

Nucleus E? (keV) Spin r„tr grstr

(eV)

present

r» (eV)

ref. J

) ref. J

)

s.p. estimate (W.u.) El Ml

a **Pb 7071 ±2 1 i 31x3 !5

-ft M 0.036 4.4 709J±2 1 17x2 15 .-'°= 13 0.019 2.3 i°7pb 7186±5 i,i 1 5x4

7206 ±5 k.i 25±5

10 *Bi 7I79±5 i. !. ¥ 24±5

7202 ±5 i, 1. ¥ 30±5

Weisskopf units given are based on our data.

form N8S-418

(REV. 7-1 «-S4> USCOMM-N8S-OC PHOTONUCLEAR DATA SHEET 455

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROi
REF c„ P. Swann

PICNS-73, Vol.I, p. 317 Asilomar

Proceedings of the International Conference on

METHOD

EL EM. SYM.

Nuclear Structure Bi 209 83

ref. no.

73 Sw 13 tag.

REACTION RESULT

excitation

ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE type range

G.G LPT 2- 5 G 5 SCD-D D£X

Table: Properties of States Observed in 206 , 207 , 20 8 p ^ an j 2G9g.

Nuclei e yJ* vr gr^/r r o G(EL) G (Ml

)

(keV) (eV) (eV)

3742 1 1 0.13(2) 0.001 0.12

206 Pb 4114 2 +

1 • 0.30(6) 5 4326 1 1 0.90(9) 0.004 0.56

4602 1 1 0.23(3) 0.001 0.12

3300 l/2

+ a) 0.039(6)

3928 (3/2") 1 0.63(7) • 4104 3/2" 1 0.55(6) 8

207 pb 4140

4627

5/2*

l/2

+ b)

1

1

0.46(5)

0.64(7)

6 0.003

4872 1/2, 3/2 1 3.6(5) o-O.Ol 0,1 .2

4982 1/2, 3/2 1

' 4.0(5) 0.0.01 o,l .2

208

pb 4087 2 +

1 0.49(5) 7 4843 1 1 5.1(5) 0.02 2.3

2826 5/2" ( .53) c) 0.09(1 ) 3977 5/2 — 1 3/2 0.82(8)

4085 5 / 2

~ — 1 3/2" 0.28(3) o,5 4144 II 0.07(2) 0,1 209

Bi

4156 It 0.21(4) 0.3 4176 II 0.21 (4) ‘ o,3 4206 II 0.25(3) -.0,4 4747 7/2--1 1/2

• 2.9(5) o,0.013 o,l .4 4784 II 2.7(5) o,0. 012 o,l .3

4822 II 1 -4(3) o,0.005 o,0.7

a ) see ref. 3 b) see re f

.

4 c ) see ref . 5

3) S.M. Smith, P.G. Poos, C. Moazed and A.M. Bernstein, Nucl . Phys.

A 1 7

3

, 32 (

1 97 1 )

. R.A. Mayer, 8.L. Cohen and R.C. Diehl, Phys. Rev. C2., 1 898 (

1 970 ).

R.A. eroglia, J.S. Lilley, R. Perazzo and W.R. Phillips, Phys. Rev.

CJ_, 1 503 ( 1 970 ). 456

p o rm N8S-4U

(MV. 7.14.44) USC OMM-N BS-OC

4)

5)
REF.

METHOD

J. Uegakl, S. Oikawa, A. Suzuki, H. Miyase, T. Salto,

M. Sugawara, and K. Shoda

PICNS-73, Vol.I, p. 209 Asilomar

Proceedings of the International Conference on Nuclear Structure Bi 209 83

REF. NO. 73 Ue I hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,P RLX 3- 40 D 40 MAG-D DST

IIMeV group o A

O

o

o

o Co

° b : o

o

o O 03

, ° c

O

O

0 30 60 90120 150 0 30 60 90120 150180

Fig- 2. 9 (degree)

17 18 19 20 21 22 23

Fig. 3. Ep (MeV)

0

Fig. 4.

40 80 120 150 9 (degree)

fokm NSS-418 IMV. 7-14-64) USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 457

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OP STANDARDS
' REF.

METHOD

= _ ci*.

H.E. Jackson, G.E. Thomas, and K.J.

Phys. Rev. C£, 1153 (1974)

Wetzel

Bi 209 83

REF. NO.

74 Ja 2 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G,G ABX 10 D 10 SCD-D 90

(10.83) (10.83)

TABLE I. Differential cross sections measured for

elastic and inelastic scattering of 10.83-MeV photons.

State or states populated by inelastic scattering are

indicated in parentheses below the target. The errors

given result from the statistical error in the measurement of the cross section relative to the calibration

value, the 90* uranium inelastic cross section.

0 da/itj) (elastic) da/dui (Inelastic) Nucleus (deg) (mb/sr) (mb/sr)

23«U

(2+

, 45 keV) 20 1.72 ±0.17

30 0.97 ±0.12

50 0.334 ±0.039

60 0.23 ±0.04

70 0.245 ±0.024 0.136 ±0.015

90 0.182 ±0.017 0.154 ±0.012

120 0.189 ±0.017 0.160 ±0.013

aJ Th

150 0.303 ±0.016 0.160 ±0.015

(2*, 45 keV) 90 0.129 ±0.015 0.103 ±0.007 Pb 20 1.28 ±0.12

30 0.55 ±0.07

50 0.289 ±0.051

60 0.20 ±0.04

70 0.087 ± 0.014

90 0.079 ±0.005

120 0.060 ±0.004

209BI 150 0.127 ± 0.008

910 keV)

1,1 Ta

90 0.101 ± 0.0062 0

<f,136 keV) 90 0.0370 ± 0.003 0.006 56 ± 0.0015

,5 *Tb

(f*,58 keV)

138 keV)

90 0.0314 ±0.003

0.0110

0.005 11 ±0.0016

±0.0011

TABLE Iff. Comparison of calculated and observed

values of the 90* cross sections for elastic scattering and of die ratio at 90* of Raman to elastic scattering by

various nuclei for 10.83-MeV photons. The parameters

used in the calculations are given in Table n.

(9o*)/dn (mb/sr)

Target Calc . Exp Calc Exp

Tb 0.036 0.031 ±0.003 0.80 0.51 ± 0.06 Ta 0.055 0.037 = 0.003 0.28 0.18 ± 0.04 Pb 0.076 0.079± 0.005 0 Bi 0.101 ±0.006 0 ~0

Th 0.128 0.129±0.015 0.91 0.80 ±0.08 U 0.157* 0.182 ±0.017 1.03 0.85 ±0.08

4 If the Livermore parameters (Ref. 33) for 235U are used then this calculated value would be 0.210 mb/sr.

N

33

C.D. Bowman, G.F. Auchampaugh, and

S.C. Fultz, Phys. Rev. 133 , B676 (1964).

FORM N3S-418

(REV. 7-1 4-«4) USC OMM-DC 26010-P64 PHOTONUCLEAR DATA SHEET 458

U.S. OEPARTMENT OF COMMERCE

NATIONAL. BUREAU OF STANDARDS
ref. L.E. Lazareva, A. I. Lepestkin, and V.I.

Yad. Fiz. 20, 242 (1974)

Sov. J. Nucl . Phys. 20, 128 (1975)

METHOO

Sidorov

EL EM. SYM. A

Bi 209 83

REF. NO.

74 La 5 htng

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE range

G.XN SPC 7- 29 r. ?q EMU-D DST

(28.5)

It S3 35 it W n Kt rrr 12S n

FIG. 2. Assymetry coefficients c/a obtained 'or nuclei with various Z in the following studies: ref. 10 -Ey max = 25 .

i

MeV. H n > 7.

4

MeV (•); ref. 1 1 F.y „iax = 27-32 MeV. F ;1 > -5 \!aV (•): ref. 12- Ey max = 24 MeV, En > ~8 MeV < ret. 1 3 -E-. = 55 MeV,

En > ~5 MeV (X); present work- Ey max = 2 .5 MeV, En > 5 MeV

(o). The smooth curve shows the coefficient h a characterizing the photoncutron angular distribution anisotropy as a function of atomic number Z. (This has been converted front the curve given in ref. 1 1 and

and is for the distribution 1(d) = a + b sin 2 d + c cos d, normalized at the points Z = 82-83.)

^J.W. Jury, J.S. Hewitt, K.G. McNeill,

Can. J. Phys. 46, 1823 (1968).

12

F. R. Allum, T.W. Quirk, B.M. Spicer,

Nucl. Phys. 52, 545 (1964).

13G. C. Reinhardt and W.D. Whitehead,

Nucl. Phys. 30, 201 (1962).

FIG. I. Angular distributions of photoneutrons obtained in irradia- tion of Rh, Ta, Au, aiul Bi samples by brcmsstrahlung with maximum

energy Ey max = 28.5 MeV. The curves were calculated from the ex- perimental points by the method of least squares for a distribution of

the form 1(d) = a + b sm : d + c cos d and normalized (a = I). For comparison we have shown below the angular distributions of photoneutrons with energy E n > 8 MeV obtained in irradiation of the same

samples by bremsstrahlung with Ey max = 20 MeV.

(over)

form N3S-418

(REV. 7-1 4-64) USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 459

LLS. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANOAROS
FIC. 3. Photoneutron energy spectra from Uh. fa. . \ u a-..*

' radiation of the samples hv brcnisxtrahiiin; with i>. iMimi:;- .

••

V.f max = -0 (Jaxhed line) and 28.5 (solid line) \IeV : >r o maximum neutron yield. For eaeii nucleus the hisM-aiani' . • i- E-, RU \ - 20 and 28.5 MeV have been combined m th : ritm : i , 4 4.5 MeV. 460
REF. K.A. Snover, K. Ebisawa, D.R. Brown,

Phys. Rev. ‘Letters 32, 317 (1974)

METHOO

and P. Paul

ElEM. sym. a

Bi

REF. NO.

209 83

74 Sn 5 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

P,G ABX 13- 29 D 17- 25 NAI-D DST

Y(0) = I A

1P

1 (cos0)

i=o

CT = 4tt A

o = 2 tt(Y( 55°) + Y(125°) ) A s [ Y(55°) - Y(125°)]/2P1 (cos55°) = Ax - 0.68Aa

a 3 A/A

o

a and A are a measure of Ml or E2 radiation Interfering with El.

An £2 or Ml resonance is observed In the reaction 20a Pb(p, Y0y,y2) :09Bi at £p “20.0 MeV

(£,**23.7 MeV) with a width r ~ 3.5 MeV. Present evidence supports its identification as a collective £2 excitation.

FIG. 2. Excitation curves for the reaction 208Pb(/>, Y0Y1y2) 20*Bi. Solid dots, data from . Ref. 5; and crosses, present work. The total cross section a “4.3 A9 tib/100 counts.

FORM N3S-418

(R EV. 7-1 4.641 USCOMM-OC 26010- P«4 PHOTONUCLEAR DATA SHEET 461

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANQAROS
REF. C. P. Swann

J. Franklin Institute 298, 321 (1974)

EL EM. SYM.

Bi 209 83

METHOD REF. NO.

74 SW 11 egf

excitation

ENERGY

SOURCE DETECTOR

REACTION RESULT ANGLE

TYPE RANGE TYPE RANGE

G,G LFT 2- 5 C 4-5 SCD—

D

UKN

Table II 10 LEVELS 2826-4822 KEV

Properties of states observed in Pb and *“B»; G(EL) and G(Ml) are the reduced

transition probabilities in Weisskopf units

Nuclei Ey (keV) J9 r,/r g rj/r

(«V) r,(eV) <?(EL) G(Ml)

*HPb 3744 1- 1 0-13 (2) 0-001 4114 2

1 0-30 (0) 5 4330 1+ 1 0-90 (9) 0-50 4600 1 1 0-23 (3) 0-001 0-12 4974 1 1 0-8 (2) 0-003 0-32 5038 1 1 2-3 (5) 0007 0-90

“TPb 3300 1/2+* 0 039 (6) 3928 3/2- 1 0-34 (4) 4104 3/2- 1 0-55 (6) 8 4140 5/2- 1 0-46 (5) 6 4627 1/2+t 1 0-64 (7) 0-003 4872 1/2- 3/2" 1 3-6 (5) «*> 1-2 4982 1/2-, 3/2- 1 4-0 (5) ~ 1-2

“•Pb 4087 2* 1 0-49 (5) 7 4843 1 1 5-1 (8) 2-3

*“Bi 2826 5/2- (0-63)t 0 09 (l) 3977 5/2-13/2 0-82(3)

4085 5,2-ri J/2- 0-28 (3) ~ 5 4144 5/2--13/2- 0-07 (2) ~ 1 4156 5/2--13/2- 0-21 (4) ** 3 4170 5/2——13/2— 0-21 (4) — 3 4206 5/2--13/2" 0-25 (3) ~4

4747 7/2--11/2- 2-9 (5) -1-4

4785 7/2-— 11/2- 2-7 (5) -1-3

4822 7/2--1 1/2- 1-4 (3) ~0-7

* See Ref. (11). | See Ref. (12). J See Ref. (7).

7C.P. Swann, Phys. Rev. Letts.

32_, 1449 (1974) . S.M. Smith et al., Nucl. Phys.

A173 , 32 (1971).

12

R. A . Mayer et al . , Phys. Rev.

C 2, 1898 (1970).

form N3S-418

in EV. 7-1 «.«4I use OMM-N BS-OC

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS photohuclear DATA SHEET 462
J. Tenenbaum, R, Moreh, and A. Nof

Nucl. Phys. A218 , 95 (1974)

CL EM. j YM.

B1 209 33

METHOD REF. NO.

74 Te 1 egf

EXCITATION ENERGY

SOURCE OETECTOR

REACTION RESULT TYPE RANGE TYPE RANGE

ANGLE

G ,G LPT 5 D 4-8 SGD-D DST

Table 4 5=5.603

Values of T'./'o and the energy separation <3 (between the incident y-line and the resonance level) as obtained from the analysis of the various experiments

Scattercr (keV) r

(meV) r0 (meV) (cV) D

(cV) Act AM | (10- 9 McV- ,

> .(10-»McV- J )

*’Mn 7491 450±250 80 i 40 17 ±1

“°Ce ) 5660 13± 3 12± 2 4.7 ±0.3 6800 0.33

,4,Pr ) 6877 85 ± 35 17± 9 6.7±1.5 450 116 “lNd ) 6877 340 ± 40 270 ± 20 12.4 ±0.3 1200 26

* MHg 4922 300± 50 260± 20 4.2 ±0.5 19000 3.4 ,0*Bi *) 5603 950±200 950±200 13 ±1 34000 160

-

The radiative strengths JCtl and AM , are also given. The level spacing D refers to the excitation energy of the resonance level Ey

. *) These values are slightly different from those of ref. *) and were obtained from a renewed

analysis of the experimental results.

Table 2 Measured angular distribution coefficients A the ratios , the spins and parities of the ground and the resonance levels, Jq" and J”

,

and the character of the ground state transition

Scatterer Ey(keV) ^2 Jo" J Transition

5S Mn 7491 0.01 ±0.02 1.00 ±0.02 I" i

,40Ce 5660 0.51 ±0.02 1.14±0.04 0

+ i El

,4, Pr 6877 0.11 ±0.02 0.95±0.03 ** i* Ml

l4I Nd 6877 0.51 ±003 1.10±0.04 0* \- El

t02Hg 4922 0.51 ±0.02 1.1 8 ±0.03 0* i- El- 209Bi 5603 0.06 ±0.02 0.97 ±0.02 1- Ml

8A. Wolf, R. Moreh, A. Nof, 0. Shahal, J. Tenenbaum,

Phys. Rev. Go . 2276 (1972).

form N3S-418

(R EV. 7-14-04) USCOMM-OC 26010-P64 PHOTONUCLEAR DATA SHEET 463

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOARQS
D. Turck, W. Ziga, and H. -G. Clerc

Phys. Lett. 49B S 335 (1974)

EL EM. SYM.

Bi 209 83

REF. NO.

ref.

method

74 Tu 5 egf

REACTION RESULT EXCITATION ENERCY

SOURCE DETECTOR

ANGLE

TVPI RAN GC E,F ABX THR- 40 D 27- 40 TRK-I 4PI

10

)2 o' /cm 2

10’ > . 25 30 35 E/Mev

Fig. 2. Solid line: fission probability rf/r tot as a function of

excitation energy E for 209 Bi as obtained from unfolding

the electrofission cross section; the hatching indicates the

statistical uncertainties. The data points are results of KhodaiJoopary [3] for the compound nucleus 209 Hi produced in the reaction 208 Pb + p.

For 209Bi an electrofission cross section below 10'3 i cm2 v.as measured by the observation of correlated binary

fission tracks in mica detectors. From the cross-section data between 23 ind 41 MeV electron energy, a fission barrier of 25.5 ± 1.5 MeV was deduced. The method offers the nosiib'lity t0 measure fission barriers ar low angular momentum

and for nuclei not rccessible otherwise.

rORM N3S-418

• RE/. '-I 4-«4l jscouu-oc 2«oto-Pe«

U.S. DEPARTMENT O c COmMERC National acREAvjO- sr,-v;»,i;s PHOTONUCLEAR DATA SHEET 464
REF.

METHOD

A. Wblf, R. Nucl. Fhys.

ELEM. SYM. Moreh,

A227

,

and 0. Shahal

373 (1974) B1

REF. NO.

A

209

74 W6 2 egf

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

$ G.G LFT 6- 8 D 6-8 SCD-D DST

6 = Doppler width 7.168, 7.637

Table 4 Upper limit off ojr, the temperature variation ratio Rt,, and the self-absorption ratio R

Saattcrcr

(•/-source) £o (MeV) r0ir (=15%)

R{%)b

)

£3 Cu(Ti) 6.556 0.80 0.94 ±0.02 1.1 ±0.5

6,Ga(Cu) 7.306 0.52 1.035 ±0.004 3. 5—0.5

l00 Mo(Cu) 7.637 0.28 1.043 ±0.007 0.8±0.3

100 Mo(.ii) 6.418 0.S5 1.032 ±0.003 0.6±0.3

tIS Sn(Cu) 6.988 0.34 1.020±0.009 5.7±0.2

l26 Tc(Cu) 7.915 0.4 ±0.1 0.95 ±0.05 6 ±5

t30Tc(Cu) 7.637 0.45±0.!0 0.84 —0.05 0.9±1.5

135 La(.Cu) 7.637 0.55 0.95 ±0.01 2.2±0.3

13, La(Ti) 6.418 0.73 0.968x0.008 6.4±0.8

l “Pr(Cu) 7.915 0.25. 1.02 ±0.01 0.9 ±0.9

l4l PriCu) 7.252 0.51 1.005±0.003 5.9 ±0.4

,44Nd(Cu) 7.915 0.27 0.39 ±0.05 < 0.5

l8# \V(Ti) 6.418 0.31 1.030±0.004 < 0.5 :o3Tl(Ti) 6.418 0.28 1.03 =0.01 1.6±0.3

:0,TivCu) 7.252 0.58 1.02 ±0.01 1.6— 0.7 209 Bi(Cu) 7.637 1.00 1.00 ±0.02 2 ±1

=of, I3i(Ti) 7. 168 1.00 0.971 ±0.005 28.0±0.6

•*) The values of Rt arc given for 10 g/cm3 thick scattcrcrs placed at an angle of 60° and a ducctor angle of 135’.

B

) The values of R arc given for the same scatterer-dctector geometry as that of Rr and a

20 g'em3 thick absorber.

Table 7 Summary of A and (5 of resonance levels measured in the present work and in earlier works Si

;

^ 17

)

Isotope Energy

(MeV) r

(mcV) r0 (mcV)

0 (eV) Ground state transition

6J Cu 6.556 70!^ 232 1 1 11.2 ±0.3 «»Ga ) 7.306 105±40 43 ± 7 6.2 ±0.5 El

l °°Mo ') 7.637 140 =40 40 ± 5 4.5 =0.5 El

109Mo ') 6.418 50±35 25 ± 8 4.25 ±0.25 El

ll *Sn 6.988 1 52 ± 5 123 ± 3 5.5 ±0.5 El

l2GTe 7.915 12± 6 5± 2 11 -2 Ml

l30Te 7.637 60 ±30 30x10 15 =2 El

l3, La ») 7.637 170 ±40 47 ± 6 10.5 =0.5 E!

l3 *La ») 6.418 852 13 67 x 8 9.5 =0.5 El

141pr

b) 7.915 7± 3 2± 1 6.6 ±1.0 Ml

14ip

r

b) 7.252 290 ±30 110x10 6.4 ±0.5 El

l4 ‘Nd ”) 7.915 30±10 S± 3 14.0 ±0.5 Ml

1 6.418 46±35 6± 3 1 ±1 E!

303Tl ”) 6.418 350 ±60 82x15 0.5 ±0.5

305T1 #

) 7.252 50±30 25= 6 5.2 ±1.5 Ml

20*Bi 7.637 > 500 > 30

20*Bi ») 7.168 820 ±40 820 ±40 5.8 ±0.8 El

*) Ref. “). 6

) Ref. •). 6 ) Ref. l *).

(REV. 7-71-641 USCOMM-OC Z6010-P64

(over)

PHOTONUCLEAR DATA SHEET 465

U.S. OEPARTMENTOF COMMERCE

NATIONAL BUREAU OP STanOARDS
Table 6 Values of At , N<\IN±, spins, and mixing amplitudes x

Scatterer (y-source) Eo (MeV)

^2 iVn/.Vx /o7 J* J'n X

45Cu(TD 6.556 01 - J 0 **Ga(Cu) 7.306 0.14 ±0.01 1.046 ±0.022 4- n - 0

100Mo(Cu) 7.637 0.49 ±0.05 1.17 ±0.05 0* I- 0” M

100 Mo(Cu) 7.102*) 0.013±0.016 0

* i- 2* -O.06-0.02 0 I00 Mo(Ti) 6.418 0.52 ±0.02 1.15 ±0.03 0* i- 0- 0

100Mo(Ti) 5.355 *) 0.19 ±0.08 0* l- 2^ 0.21-0.:?-,

“•Sn(Cu) 6.9S8 0.48 ±0.02 1.12 ±0.05 0* i- O’- 0

136Te(Cu) 7.915 0.46 ±0.11 0.86 —0.10 0* i + 0* 0

130Te(Cu) 7.637 0.48 ±0.04 1.12 -0.04 o- i- 0* C

139 La(Cu) 7.637 0.16 ±0.02 1.024±0.0I5 -A "

T > 0

139 La(Ti) 6.418 0.093 ±0.004 1.01S±0.006 l* J- r J

14, Pr(Cu) 7.915 0.41 ±0.06 0.94 ±0.03 +• X ” 0 "u r0 - li 14l Pr(Cu) 7.252 0.23 ±0.06 1.03 -0.02 £* ' 0

14 *Nd(Cu) 7.915 0.50 xO.03 0.92 ±0.09 0* i* 0* 0

18S W(Ti) 6.418 0.49 ±0.05 1.15 ±0.06 0* i- 0- 0

is< wcn) 6.296 *) -0.011 ±0.014 0* i- > ¥ -0.10^-0-03 *. J03Tl(Ti) 6.418 0 1.01 ±0.01 A.* 4 0

303TI(Cu) 7.252 0.71 ±0.08 0.90 ±0.02 1* i* b —0.25—0.05

303Tl(Cu) 7.047 *) -0.69 ±0.03 I- *? -r T b 0.. ’ -••0.04 :09 Bi(Cu) 7.637 0.24 ±0.04 »>- (i) j309Bi(Ti) 7.168 0.20 ±0.02 1.040±0.015 !! “ •• 4* iErrors refer to one standard deviation.

*) Inelastic transitions. Ref. 17

). ') Ref. 13

). Taiilf. 8

X ) R. Moreh at al. , 2fcy3. P.ev. C2 (1570) 1144

8) A. U’olf , at al. , Phys. Rev.

Cu (1572) 2276

15) R. Hereh et al. f Phys. Latt

363 (1971) 71

16) R. Moreh st al. , rhys. Rev.

C7 (1973) 1835

17) R. I-Ioreh at al. , Nucl. Phys

A217 (1973) 477

29) R. Karsh et al. , Phys. Rev.

C4 (1971) 2265

30) R. Horsh et al. , Phys. Rev.

178 (1965) 1361

Values of V, /vi i and A sl ,

t ! iransitions M 1 transitions

scatterer i-o ' " >< D kill scatterer Em Lf r, D

(y-sourcc) (MeV) (meV) (cV) (10- 9 MeV- ') (y-source) (MeV) (ineV) (eV) (10-"'

S3 Ni(Fc) ») 7.646 12300 ,3f'Te(Cu) 7.915 260 — 1.172 24 0.5 -- 0.666 2.3 — 1.421 1.7 69Ga(Cu) 7.306 660 — 0.572 3.2 1.0 141 Pr(Cu> 7.915 90 — 0.872 2.7 0.9 -> 1.298 1.3 l00Mo(Cu) 7.637 670 — 1.437 — 1.5 SO

O.S

1.4 -> 0.535 40 7.7 — 1.655 1.0 — 1.063 5.7 1.4 — 1.461 1.4 0.4 IJl Pr(Fe) *> 7.632 170

tt3Cd(Fe) °) 7.632 350 — 0.145 — 1.130

5.6 6.4 — 0.617 1

1

4 — 1.223 7.3 3.4 — 1.293 -> 1.437

0.4

5.6 1 — 1 .429 1 — 1.451 6.8 — 1.468 1.7 0.9 — 1.582 l.l ,30Tc(Cu) 7.637 360 — O.S37 16 5.5 I44 Nd(Ca) 7.915 330 — 1.589 18 8.8 — 0.697 13 — 1.041 2.7

l39La(Cu) 7.637 190 — 1.564 6.2 — 1.384 3 2.5 — 1.533 3 2.7 I05Tl(Cu) 7.252 1200 - 0.205 4

I4, Pr(Cu) 7.252 220 -0.146 S2 38

-» 1.120 3.6 6.5 1,# W(Cu) 6.413 110 — 0.122 12 14

i'j

j

o

The values of D refer to an excitation energy E0 . •) Ref. l ). a

) Ref. c

) Ref. 30

).

466
REF. M. Areskoug, B. Schroder, K. Nucl. Phys. A251 , 418 (1975)

methoo

Lindgren

ELEM. SYM. A

Bi

REF. NO.

209 83

75 Ar 7 egf

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE G,F ABY THR-600 C 600 ACT1

4PI

60 63 100 120 140 MASS NUMBER

Fig. 2. Mass chain yields of fission products. Filled circles indicate measured total yields, open circles indicate total yields calculated from catcher foil yields according to eq. (2). Error bars show statistical errors. The Gaussian is the fitted mass distribution. Also shown are the primary (thin drawn histogram) and secondary (thick drawn histogram) mass distributions calculated from the liquid drop model.

(over)

form N3S-418

(R ev. 7-1 4-64) USC OMM-N BS-O C PHOTONUCLEAR DATA SHEET 467

U.S. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OF STANDARDS
Table 1 420

Formation modes (C > cumulative. I = independent), decay data and obtained values of yield <r,„ R0 and mean charge <Z> for the fission products studied

, range

Nuclide Type n

(d)

£. Intensity (keV) ,«;) (Mb/eq. q.) R0 (mg/cm2 of Bi) <z>

iSFe C 44.6 1099(56.5). 1 292(43.2) b

) I5.5±0.4 1 1.5 ±0.5 25.37 soZn C 244 1116(50.75) 18.3±2.4 30.12 j*As I 17.77 596(59.22) 29.5 ±0.7 9.1 ± 1.1 33.00 iiSe j*As

C 120.4 136(56.28). 265(57.28) 11.4 ±0.6 8.3 ±0.5 34.12

I 1.097 559(41.05) 66.6 ±2.5 33.00

SsBr I 1.4S

554(70.5). 698(27.9). 1044(27.8). 1317(27.5), 1475(16.7)

1 17.8 ±1.7 9.2 ±1.0 35.00 “Rb c 86.2 520(46.8). 530(30.4). 553(16.5) 52.7±0.9 8.0 ±0.2 37.15 5?Rb I 33 882(73.4) 77.0 ±2.9 37.00 ??Rb I 18.66 1079(8.8) 1 73.2 ±7.4 37.00

39 1 c 0.58 381(77) (35.0 ± 1.1) 39.11 c 3.35 388(815). 485(90.6)*) 29.8 ± 1.5 39.11 ssy c 106.6 898(92) 83.9 ± 3.0 9.1 ±0.4 39.16 !5Zr c - 85 393(97) 1 1 .4 ± 0.3 40.06 !SZr c 3.27 909(100) 35.9 ± 12 40.09 SS“Y I 0.133 202(97) (148. 2± 5.0) 39.00 liSr . c 0.406 750(23.0) 134.8 ±13.6 37.73 !|Zr c 65.5 724(43), 757(54.6), 766(99)*) 242.3 ± 2.5 8.4 ±0.1 39.63 2*Nb I 35.1 766(99) 159.3 ±0.9 9.1 ±0.2 41.00 :?Nb I 0.979 460(28.2). 569(55.7), 1091(49.43) 172.1 ± 2.7 7.1 ±0.5 41.00 :$tc I 4.3 813(82.2), 850(97.8) 1 5.9 ± 1.2 43.00 VoZr c 0.708 743(93.3) 81. 2 ± 3.6 39.82 HMo c 2.78 181(7.6) 250.2 ± 6.5 41.49 ‘2i“Rh c 4.47 309(83) (19.1 ± 0.9) 45.08

l !iRn c 39.6 497(90), 610(5.4) 370.7 ± 3.0 8.1 ±0.2 43.31 ‘SiRn c 0.185 724(44.5) 174.2± 15.1 43.65 ;?Rh

' c • 1.496 319(19.6)") 324.8+ 3.4 8.9 ±0.6 44.20 *!?Af c 41 344(42)*) (9.8 ± 2.3) 47.06 ‘2iR» c 367 622(9.76)*) 1 10.5 ± 23.

1

6.2 ±1.4 43.75 STAg I 8.4 406(15), 430(16), 451(31),

616(24.3), 717(32)

(9.0 ± 0.3) 47.00

•I?-Ag I 253 658(93.8), 678(1 1.8), 885(74.7) (61.1 ± 1.3) 7.5 ±0.4 47.00 ‘i^Ag c 7.47 342(4.6) 330.8 ±16.5 46.43

*iiln c 2.83 171(90.3) 14.3 ± 0.4 49.09 ’liPd c 0.838 617(43.5)*) 78.9 ± 6.1 45.83 'ii-In I 49.51 190(17.7) (53.5 ± 1.3) 6.1 ±0.5 49.00 c 2.224 528(27.5) (44.2 ± 0.8) 47.66 'irsb I 5.8 1023(99), 1172(100) • (20.8+ 0.3) 51.00 fi-Te c 154 212(100)**) (15.7 ± 0.7) 5.4 ±0.3 52.23 ‘??Sb 1 2.72 564(63) 34.3 ± 1.3 51.00 ‘IfSb I 60.2 603(98) ( 14.8 ± 0.5) 51.00 ?5i I 4.17 603(62) 18.3 ± 0.8 53.00 'f?Sb I 12.4 415(88). 695(100), 697(32) 3.2 ± 0.4 51.00

‘s‘1 I 13.0 389(34.9), 666(32.4) 1 8.0 ± 1.3 53.00

l i*Ba c 11.7 124(14) 13.1 ± 0.7 '56.24

<7,„ values within parentheses were not used in the yield distribution fit. *) Gamma radiation from daughter nucleus.

*) (T-r, not measured. R calculated according to R = 2 Wf(nr

-r <r,), (or + aTr ). *) Only <rT measured. ct estimated according to ar;at — 1 .06. 4

) Intensity unknown. Adopted value 100°„.

468
REF. V. S. Evseev, T. N. Mamedov, 0. V. Selyugin

Yad. Fiz. 21, 245 (1975)

Sov. J. Nucl. Phys. 21 , 129 (1975)

EL EM. SYM.

Bi 209 83

METHOD REF. NO.

75 Ev 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE detector

ANGLE TYPE RANGE TYPE RANGE G,N SPC 7- 31 C 31 SCI-D 140

Neutron energy spectra have been measured in the energy range 2 £ E, £ 5 MeV for photoexcitauon of

the nwl H Ta. Pb, Bi, and Th by bremsstrahlung with maximum energy 31 MeV. From the neutron spectra

jve have determined values of the nuclear temperature T alter emission of the first neutron: 1.01 ±0.04,

1.12 ±0.04, 1.11 ±0.04, and 1.25 ±0.05 MeV respectively forTa, Pb. Bi, and Th. Comparison of the values

obtained for the nuclear level-density parameter with the predictions of the statistical theory of nuclear

reactions shows that this theory does not describe the decay of collective nuclear states of the giant dipole resonance type.

ponu N3S-418

(R G V . 7-1 4-041 USCOMM-NBS-OC PH0T0NUCLEAR DATA SHEET 469

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
REF. Yu. I. Sorokin and B. A. Yur'ev

Izv. Akad. Nauk SSSR. Ser. Fiz. 39, 114 (1975)

Bull. Acad. Sci. (USSR) Phys. Ser. 39., 98 (1975)

elEm. sym.

Bi 209 83

method REF. NO. 75 So 12 hmg

REACTION result EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE

G, XN ABI 7- 27 C 7- 27 BF3-I 4PI

SEE 73 S019

Table 1

Ot- ment A

eo. (7. Tn) MeV • b

a07* MtV b mb

«-2. mb X XM«V-I

Em* MtV

K, MeV T

> 3i

1 Thret*

| hold

(7.2o). MtV

<»0(El MtV X

X b

10 2?Mt V

to 20 MtV

20-17 MtV

113 2.29 i.ro 1.49 0.41 112 6.7 15.8 .0 I

! 10.2 19.2 1 ,66

>14 2.10 1 .66 1.39 0,47 IC8 6.5 15.7 • 1.5 10.2 18.1 1 ,68 116 2,40 1.85 1,40 0.45 110 6.6 15.6 1.7 8.1 17.

1

1 .71 117 2.52 1 .86 1.39 0.47 no 6.7 15.4 :i.g 7.3 16.5 1 .72 Sn IIS 2.46 .1 .92 1 .53 0.39 115 7.1 15.5 ;o.7 •V6 16.3 1 71

119 2.61 1.85 1.42 0.44 III 6.8 15.4 22.0 13 2 15 a 1.74 120 2.69 2.07 1.69 0,38 127 7.9 1 5.J 19.1 :*.6 J JS 122 2.94 2,03 1.51 0,52 119 7.1 15.6 21 .8 15 0 1.77

124 2.90 1.93 1.44 0.49 114 6.9 15.5 23.2 5.4 14.4 179 W ; 182 3.68 2.78 2.32 0.4G 184 12.5 . «. 24.2 5.2 14.9 2.63

i 184 4.68 2.95 2.33 0,72 196 13,0 — 23.7 5.2 13.6 2.65 Au 197 4.06 3. IS 2.81 0.34 226 IS.S 13.3 20.9 17.1 14.8 2.84

p»> i 206 3.93 3.21 2.80 0.41 225 16.1 13.5 23.1 6.6 14.6 2.96

i 2! >8 4 .32 3.28 -2.81 0.47 2)1 16.7 13.3 22.6 9.6 14.1 2.98

Bi 209 | 4.39 3.47 2.96 0.51 216 17.9 13.2 21.3 10.2 14.3 3.00

FORM N3S 4I8

IR EV. 7-1 4. 041 USC OMM-N BS-O C

U.S. OEPARTMENT OF COMMERCE

NATIONAL 8UREAUOF STANOARDS PH0T0NUCLEAR DATA SHEET 470
ref. 6. Bologna, V. Bellini, V. Enina, A.S. Flguera, S. Lo Nigro

C. Mi lone and G.S. Pappalardo

II Nuovo Cimento 35A , 91 (1976)

CL CM. SYM.

Bi 209 83

MCTHOO REF. NO.

76 Bo 15

REACTION RESULT excitation

ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE G,F RLX 220-500 D 220-500 TRK-I 4PI

COHERENT BREMS

k.(MeV)

j

Fig. 6. - Photofission yields per equivalent quantum of Bi, Pb, Au and Pt as a function

of the first peak energy kt of photons. The dots are the experimental data; the dashed

curves represent the yield functions estimated as described in sect. 5. a) Bi (Y, f), 6) Pb (Y.f). c) Au ( Y.f), d

)

Pt ( Y,f).

over

fomi NSS-41C IMV. 7-1 4.441 U1COMM4IIMC PHOTONUCLEAR DATA SHEET 471

U.S. OERARTMENTOF COMMERCE

NATIONAL. lUKIAUOF STANOAROS
Fig. 7. - Photofission cross-section estimated by our unfolding method. For Bi the procedure used to deduce the FWHM of the first maximum is indicated, a) Bi (y, f), *) Pb (Y, f).

472
REF‘ T. E. Drake, H. L. Pai, I. Nascimento

Nucl. Phys. A259, 317 (1976)

ELEM. SYM.

Bi

A

209

z

83

METHOD REF. NO.

76 Dr 1 egf

REACTION RESULT EXCITATION ENERGY

SOURCE oetector

angle

TYPE RANGE TYPE RANGE E,F ABX 25- 45 D 25- 45 TRK-I DST

Ahetretf* The fission yields from the eiectrofission of ao*Pb and ,0*Bi confirm the theoretically predicted

at the fission saddle point were measured for 10, Pb and 20*BL

E, (MeV)

Fig. 3. The yield curves are shown for J0,Bi and 10,Pb. The data points are shown with the error ban and the theoretical fit as a dashed curve.

ANGLE » (DEGREES)

Fig. *-2. The angular distribution of fission fragments from 209 Bi (top) and

,0, Pb with respect to the direction of the incident electron beam of energy

43.1 and 42.8 MeV respectively.

Table 1 The measured level density parameters and the fission barrier energies for ,MPb and J0*Bi

J0, Pb a°*Bi

«,(MeV-‘) 8.1 ±1 10.2±1

a, (MeV“ *) 10.8 ±1 13.0±1

Bf (MeV) 27.6 ±0J*) 23.4±0J

d. (MeV) 0.6

*) This value of the fission barrier Bf includes the pairing energy d,.

FORM N3S-418

(REV. 7-1 4-64) USCOMM-NBS-OC PHOTONUCLEAR DATA SHEET 473

u.s. department of commerce

NATIONAL BUREAU OF 3TANDAROS
REF. V. Emma, S. Lo Nigro, C. Milone

Nucl. Phys. A257, 438 (1976)

EL EM. SYM.

Bi

A

209

Z

83

method REF. NO. 76 Em 2 egf

REACTION RESULT excitation

ENERGY

SOURCE oetector

ANGLE

TYPE RANGE TYPE RANGE

G,F ABY THR-999 c 999 TRK-I 4PI

Table 1 999 = 1 GEV

Element z

2/a

(mb)

£o (MeV) (mb)

Bi 3196 113+0.6 200 7.6 ±0.6 Pb 3143 5.4 ±0.4 220 . 3.6 ±03

T1 3110 4:1 +03 230 2.8 ±0.3 Au 31.68 2.0±ai5 240 1.4 ±0.2

Pt 31.18 1.1 ±0.08 255 (8 ±0.7) x 10-' Re 3021 (3.7 ±0.3) x lo

-

1

280 (2.9 ±0.3) x 10-' W 29.78 (33 ±03) x 10-

290 (2.8 ±03) x 10-' Ta 29.45 (33 ±03) x 10- * 300 (2.7 ±0.3) x 10-' Hf 29.04 (1.7 ±02) x 10* 1 310 (1.4 ±02) x 10” 1 Yb 2831 (13±0.1)xl0-* 330 (12±0.1)x 10' 1 Tm 28.18 (73 ±0.8) x 10 _1 335 (6.8 ±0.8) x 10* 1 Ho 2721 (3.6 ± 0.4) x 10* 1 355 (3.5 ±0.4) x 10" 1 Dy 26.80 (16 ±0.3) x 10* 1 360 (23 ±0.3) x 10 -1 Tb 2638 (23±03)x 10- 1 370 (23 ±0.3) x 10' 1 Gd 26.04 (1.6 ±02) x 10" 1 380 (1.7 ±0.2) x 10* 1 Sm 2536 (13±02)x 10“ 1 390 (1.4 + 02)x 10" 1 Nd 24.96 (92 ±0.9) x 10" 1 405 (1 ±0.1)xl0* 1 Ce 24.00 (8 ±0.9) x 10“ * 420 (9 ±1 )xl0- J La 2339 (8.4 ±0.9) x 10* * 430 (1 ±0.1)x 10‘ 1 Sb 2136 (12±02)x 10* 1 460 (13 ±0.3) x 10' 1 Te 21.19 (8.8 ±1 )xl0-* 465 (1.2 ±02) x 10 _1 Sn 21.06 (1.3±02)x 10* 1 465 (I.7±0.3)x 10' 1 Cd 20.49 (1.7 ±03) x 10"* 470 (2.2 ±0.4) x 10- 1 Ag 20.47 (2 ±03) x 10*

470 (2.6 ±0.4) x 10* 1 Zn 13.76 (2 ±0.4) x 10“ 1 515 (3 ±0.6) x 10-' Cu 13.44 (14 ±0.5) x 10- 1 515 (3.6 ± 0.8) x 10“ 1 Ni 13.35 (14 ±03) x 10- 1 510 (3.6±0.8>x 10“ 1 Fe 1110 (3 ±0.6) x 10~ 1 510 (4.4 ±0.9) x 10‘ 1

Fig. 2. Nuclear fissilities as a Function of Z

J //4. Experimental points *o!id circles represent our data;

squares, the data from ref. *); open circles, the data from ref.

7

i: and crosses, the data from (p,0 experi- ments10

). The straight line is the best fit calculated from our data tor Z

: 4 > 26. The dashed curve is the cun e %T calculated by Nix and Sasst' : L

4

A.V. Mitrofanova et al

.

Sov. J. Nucl. Phys. 6., 512 (1968)

.

Methasiri et al., Nucl.

Phys. A167 , 97 (1971).

12

J.R. Nix et al., Nucl. Phys.

81, 61 (1966)

.

20

N.A. Perifilov et al., JETP

(Sov. Phys.) 14, 623 (1962);

Proc. Sytnp. on the physics & chemistry of fission, Salzburg

1965, vol. 2 (IAEA) Vienna,

1965, p.283.

form N3S-418

<R EV. 7-1 4» 64) use OMM-NBS-OC

U.S. DEPARTMENT OF COMMERCE nation a l BURESUOF ST ANOAROS PHOTONUCLEaR DATA SHEET 474
ref.

METNOO

G. M. Gurevich, L. E. Lazareva, V. M. Mazur and

G. B. Solodukhov

JETP Lett. 23, 370 (1976)

Pls'ma Zh. ETTsp. Teor. Fiz. 23, 411 (1976)

CL CM. SYM. A

Bi

ref. no. 209

z

83

76 Gu 5 hmg

REACTION RESULT EXCITATION energy

SOURCE DETECTOR

angle

TYff RANGE

G.MU-T ABX 8- 21 C 35 NAI-D 4PI

We measured the total cross section for the absorption of rays in the region of El

resonance for the nucld '“Ho. ,7»Hf, ,MHf, "‘Ta, 1UW, '«Au, and »*Bi. The

singularity in the behavior of the resonance widths, observed in the region 160 < A< 185, is apparently due to the influence of the neutron subshell N =* 108.

* n U ttt, MeV FIG. 1. Total photoabsorption cross sections for the nuclei

185Ho, 1T8Hf, 180Hf, ia,Ta, m

182W

Au, 208 Bi.

i>9kh NlV. IS incv. 7.1 ...a USCOMM.NL> OC

FIG. 2. Widths r of FI giant resonance in the region of nuclei with A > 150

according to the data of Saclay (•), Livermore (A), and the Institute of Nuclear

Research of the USSR Academy of Sciences (O). The crosses mark the deformation parameters 0.

over

PHOTONUCLEAR DATA SHEET 475

U.S. DEPARTMENT OF COMMERCE

NATIONAL BURCAUOF STAnOAROS
FIG. 3. Width of Lorentz lines approximating the photoabsorption cross sections, for deformed nuclei in the region 150 < A < 185.

Nucleus mh

Ti

MeV

*1

MeV

°imb

r2 MeV

El

MeV ai Ti

<?•b 0

H0-165 235 2.0 12.2 272 4.0 15.5 2.3 6. 8 ±0.8 0. 29

Hf-178 291 3.1 12.2 334 4.9 15.5 1.8 7. 5 ±0.8 0. 28

Hf-180 286 3.2 12.2 324 5.1 15.3 1.8 7.2±0.8 0. 27

Ta-181 272 3.0 12.1 316* 5.1 15.0 2.0 6. 8 ±0.8 0. 26

W-182 267 3.2 11.9 303 5.6 14.8 2.0 7. 2 ±0.8 0. 26

Au-197 535 5.2 13.7 • • • • • • • • • • • • • • • • O o

Bi-209 600 4.6 13.8 • • • • • • • • • • mm • • • • mm

476
REP.

METHOD

D. Turck, H.-G. Clerc, H. Trager

Phys. Lett. 63B, 283 (1976)

EL EM. SYM. A

I z

Bi

REF. NO.

209 83

76 Tu 2 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE E,F ABX 24- 50 D 38- 50 TRK-I 4PI

Fig. 1. Cross section o

e

for electron induced fission in 204,206,207,206 pj, an(j 209 gj as a function 0f the incident elec- tron energy £qTable 2

Fission baniers Bf as determined from electron induced fission. In the last column theoretical fission barriers according to ref. [1] with surface independent pairing strength are listed.

isotope iff (MeV) gtheor.

204 Pb 24.0=1.5 24.0

206 pb 26.8=1.5 26.2

207 Pb 26.9=1.5

208 Pb 28.6=1.5 28.1

209 Pb 24.3=1.5

FISSION BARRIER

Fig. 2. Summary of fission barrier heights obtained from fits to experimental fission cross sections for nutlei with Z < 8 S. o: a-induced fission [12) . For J01

TI, the value of 22.5=1.5

of ref. [3] is also included; a; proton-induced fission [12];

o: electron induced fission (present work). Values for different isotopes of the same element are connected by straight lines. The nuclear charge numbers are indicated. The erors are ± 1.0 MeV for proton and a-induced fission [12] and =1.5 MeV

for electron induced fission.

^U. Mosel, Phys. Rev. C6 (1972) 971.

u.S . Burnett et al., Phys. Rev. B134

(1964) 952.

L.G. Moretto et al., Phys. Lett. B38

(1972) 471.

form N3S-418

(R EV. 7-14-64) USCOMM-N0S-OC PHOTONUCLEAR DATA SHEET 477

U.s. DEPARTMENTOF COMMERCE

NATIONAL BUREAU OP STanOAROS
. . £ ft

,

D.F. Coope, L.E. Cannell, and M.K. Brussel

Phys. Rev. C 15, 1977 (1977)

el-v. :»m.

Bi

A

209

z

33

RE?. *.0.

77 Co 3 hmq

n £ a ; riON ......

ExCI-a-.O*.

E

see* :e tST.CrC:

AM Cl £

G, G LFT 4 - 7 C 6,10 SCD-D 125

4.223-5.549) (6. 6, 9.

7

-

Usia;. brerr.-.srrahlung produced with 6 6 and 9.7 MeV beams, nuclear resonance fluorescence measurements ] -| |_£y£LS 4 . 2-5 . 5 MeV

were made on targets of 'Pb and :#*bi. Ground state trarv-ttior. w-dtHs for previously unknown energy

levels with widths 5 t cV were obtained. An interpretation of several of the-,; levels in terms of a particle-core weak coupling mode! is suggested. TABLE IV. Observed levels and their strengths. The valve for rc assumes sT,/r =3 for

*J°Pb and2 '*Pb, and gT^T = 1 for 207Pb and 1)3Bi. Values in parentheses have uncertainties

in excess of 5O'. Statistical uncertainties are given for well-defined peaks. Total uncertainties Lnclude uncertainties in flux calibration. Energy values are believed to be accurate to ±3 keV for the starred (*) :o, Pb levels and to ±5 keV for the other levels.

Other measurements

Energy

(MeV) Nucleus

r,

(eV)

Uncertainty

Statistical

r=) Tout *r4Vr

(eV)

r,

(eV). References

S.S'S CPb) 206 7.4 40

6.73 5.5 40

5.902 4.4 15 40

5. so-* (3.0) 5.793 (i.0) 5.639 (0.5) * 5.615 (1.0) C

• <a 5.577 (0.5) c in jz c

5.039 1.6 15 40 0

4J >v^

JC 0

•r— *o m ad

4.974 0.8 40 no a. • +J c •«- <0

r^. 3 z: to <0 £= O

6.753 (?b) 207 (<10)

erv to C E

s_ in 0 » 5.716 (3) O

at C CJ in -m 0 at 5.600 (3) (12)

e • to C •«- >V U

oo O r— at 4J OVr—

5.490 in 0 1- >

5.223 (3) 0 m 3 3 at <t> at t- r-. m c 10 CO O c <u c atr5.209 (8) r— <0 cn C s +j a; lu i/i m

4.950 C7) 4.0 r»/r-i 12 OC\J

«> id "CT

</> at **- 4- O C CL

(13) 3.6 ryr = 1 12 < C at • j= O lO »r- O

<— 3 </» at e •— » 4.3-* » ) 12 • at cn ^ m 1— 0 -m

to 4-> CM 0 -d 1— mu «M 15 m

7.332 * CPb) 203 38 10 35 35.41 11.10 >v

JZ to c .a

id j

C 3 c t= 1^.

•<— cz i- cn 7.033* 14 10 35 15, 17 ± 2 11,5 Ql O Q. -CTO • O 1—

7.063* 29 10 35 15,31 ±3 11.5 # ** 1— • c; at+Jt/mat 0 • c * 6.721* IS 20 40 15.14 11.10 r— * . cn —

<_> .c :o *—• at 0 C *M -3 «— 0 cl —- at 6.357 (0.5) 3 •r- 4-> — to 4- a- in (1.0) Z z: at 0 i

a. c - 0 m

6.30o COOl- 0 in at 6av252 4.1 45 «k • <0 <0 t- « c ai c

15 11 C id • in z: c at 0 0 c

5.513* 28 2 35 C > c c 0 •>— •<— oj 5.293* 8.6 5 35 S 11 rtJ 3

• <11 od

<0 « . -C vNiU-

<a c +j w- t— 3 at <a u6.3 5 35 j'* i* 5.1 ±0.S 12 in at ^ *“ Li to u 0 O " 4.035* 0.51 40 J

T n 2* 0.5 ±0.1 12 # x • <c </» 3 at -i- <lt •4-r- C Ol

CL >v i. UT) CL C Q. O -CT 5.549 (Bi) 209 6.6 40 O

• -c

CL CL

• O C

«C 10 <0

• O CL-<- -r- UU< IrtCt 5.522

| in O r— C\J 5.509 > 5.493)

17 5 35 r—

5.422 8.3 45

5.293 12 15 40 s 4.845

j

•

1.4 12 4.803 > (10) 2.7 12 4.77l)

4.501 (3)

2.9 12

J $

* ; p ^ 3 • s* - ; 4.228 (3) 478 r.*r :-. v- : . A.-c-
her.

method

V. di Napoli, M.L. Terranova, H.G. de Carvalho, J.B. Martins

J.D. Pinheiro Filho and O.A.P. Tavares

J. Inorg. Nucl. Chem. 39, 1727 (1977)

CLEM. SYM. A

Bi

MET. NO. 83

77 Di .6 egf

REACTION RESULT EXCITATION SOURCE DETECTOR

ANGLE ENERGY TVP| RANGE TYPE RANGE

G,2N ABY THR-999 c 300-99? ACT1

4PI

G,3N ABY THR-999 c 300-99? ACT1

4PI

G,4N ABY THR-999 c 300-99? ACT1

4PI

Abstract—Cross sections per equivalent quantum, in the energy range tU-l.OCeV, have been measured for *Bi(Tt 2»i). **Bi(T,3/i), ”Bi(7, 4ti), **Co(7, 2a). "Co(7, 3a), **Co(7, 4«) and J,V(y,3n) reactions. From the cal- culated mean absolute cross sections and the date already available in literature for (y. an) reactions (x fe 1 ), a cross, section formula has been deduced which reproduces, within a factor of two, most of the experimental cross

sections for target nuclei ranging between *Be and atU.

999=1 GeV

Fig. 3. The same as in Fig. 4 for the (y,3n) reactions. Filled

circles are taken from our earlier experiments: ”Mn, Ref. [7].

,27

I. Ref. 131. Open circles: J, V. Ref. [17]; ”Mn, Ref. [Ill;

75 As.

Ref. [121; "Y. Ref. [141; '"I. Ref. [9. 10. 131; '"Au. Ref. [151. Open triangle: !I V. Ref. [18]. Filled triangles are the results of the present work for "V, ”Co and ^BL The straight line is a least-squares fit of the experimental points.

foam N8S-41S mrv. 7.i 4* #4i USCOMM-NSS-OC

Fig. 4. Experimentally determined mean absolute cross sections

for the ( 7. 2n) reactions vs the mass number , A„ of the target nucleus. Filled circles are taken from our earlier experiments' [< 6,: ‘”Au-

Open circles: ,JC

and '•O. Ref. [16]; ‘"Au, Ref. [151. Filled triangles are the results of the present work for ”Co and **BL The straight line is a

least-squares fit of the experimental points. 479

over

u.s. derartmentof COMMERCE

NATIONAL IURCAUOP 3TANOAROS
Fig. 6. The same u in Fig. 4 for the (y, 4n) reactions. Riled

circle is taken from our earlier experiment: 33Mn, Ref. (71. Open

circles:

73As, Ref. (12];,ZT. Ref. (9. 10,13]. Filled triangles are the

results of the present work far "Co and ®*BL The straight line is a least-squares fit of the ex ttrimental points.

Table 1 Mean absolute cross sections for the ( 7, xn) reactions, with I <x < }, in complex nuclei

at intermediate energies.

Target Energy-range Cross section. o.ImM

nucleus Reaction (GeV) Ref. (Experimental) '(Calc.f) *Be

,Z (r. 2n) 03-1.0 8 0.021 ± 0.002 0.007 C (r. 2n) 030J 16 0.0277 ± 0.0004 0.025 l40 (r. 2n) 030.8 16 0.01 13 ± 0.0003 0.072 s'V

(r.3«) 03—1.0 This work 0.23 ±0.06 0368

0.23-0.60 17 0.38 ±0.04 0.268 0.25-0.80 18 0307 ±0.012 0.268 33 Mn (y.3n) 0.3—1.0 7 0.41 ±0.05 033

0.3-0.8 11 0.311 ±0.016 0.33 (%4n) 03-1.0 7 0.053 ±0.004 0.079 "Co (?. 2n) 0.4-1.0 This work 1±1 13 (%3n) 0J-1.0 This work 0337 ±0.007 0.4 (?,4t) OJ-l.O This work 0.06 ± 0.01 0.1 "As (y.3«) 03-0.9 12 039 0.7 (T.4«) 03-0.9 12 034 034

**Y (y.3n) 033-1.0 14 0.47 1.0 '"Rh (y. 2n) 0.4-0.9 46 5.1 ±2.4 17 ,r

I (7,2n) 0. 1 -0.8 9 7.4t 3.4 0J-1.0 3 20±7 3.4 (r.3n) 0J-1.0 3 0.7 ±0.2 13

0.25-0.9 9, 10. 13 l.6 ± 0J L9

(r.4«) 0.25-0.9 9. 10. 13 1.4 ±0.4 13

,fTAu (r. 2n) 030.9 15 2±2 53

0J-1.0 5 7±5 53

(r.3«) 0.3-O.9 15 13 ±0.4 3.6 “*Bi (y. 2n) 0.3— 1.0 This work 6 ± 1 53

(y.3n) 0JJ-I.0 This work 2.0 ± 0.4 3.8 (r.4«) 03-1.0 This work 13 ±0.2 15

tCalculated values according to eqn (12) ^Deduced value from the interpolated <rQ

curve as indicated in Ref. (9].

3. V. di Napoli. F. Dobici, F. Salvetti and H. G. de Carvalho. Nuoto Cimtnto 4IB, 1 (1967). 4 V. di Napoli. D. Margadonoa, F. Salvetti, H. G. de Carvalho and J. B. Martins, Lett Nuoto Cimtnto L 308 ( 1969).

}. V. di Napoli, A. lit Lacerenza. D. Margadonoa, F. Salvetti. H. G. de Carvalho and i. B. Martins, Lett Nuoto Cimtnto l, 63 (1971). 6. C. Aurisicchio. V. di Napoli, F. Salvetti and M. L. Ter- ranova. Cazz. Chim. ItaL 102. 37S (1972).

7. H. G. de Carvalho, J. B. Martins, 0. A. P. Tavares. V. di Napoli, F. Salvetti, Proceedings of the International Conference on Photonuclear Reactions and Applications. Pacific Grove, CaL. Sect 8C3-1 (1973); V. di Napoli. J. B. Martins. G. Persichelli and M. L Terranova, Lett Nuoto Cimtnto 11, 179 (1974). 8. V. di Napoli, M. L. Terranova. H. G. de Carvalho and J. B. Martins, Cazz, Chim. ItaL 104 463 (1974).

9. G. G. Jonsson and B. Forkman. NucL Phys. AW. 32 (1968).

10. G. G. Jonsson, B. Forkman and K. Lindgren, Phys. Lett 26B, 308 (1968).

11. G. Andenson, B. Forkman and B. Friberg, Report LUNP

6901, Lund Institute of Technology. Lund University, p. 4, Sect 8, 1969 (unpublished).

12. G. Andenson and B. Forkman, Annual Report, Univenity of Lund, Lund Institute of Technology, p. 48, (1970) (un- published).

13. G. G. Jonsson and B. Persson, NucL Phys. A153, 32 (1970).

14.

J.Sternby, Report LUNP 7011, Lund Institute ofTechnology, Lund Univenity. September 1970 (unpublished). Also quoted

in G. G. Jonsson and K. Lindgren. Phys. Scr. 7, 49 (1973).

13. K. Lindgren and G. G. Jonsson, Nad. Phys. A166, 643.

(1971).

16. B. Johnsson, 14 Nilsson and K. Lindgren. Univenity of Lund Report LUNFD6/NFFR-30QS/M8/. LUTFD

6/CTFKF-3003/1-18/. October (1976).

17. L Blomqvist, P. Janedek, G. G. Jonsson. R. Peterssoo. II. Dialer and K. Tescb. Z Physik A27S. 83 (1976).

18. B. BQlow, B. Johnsson. M. Nilsson and B. Forkman, Z

Physik A278, 89 (1976).

19. G. G. Jonsson and K. Lindgren. Phys. Scr. 7. 49 (1973). 20. G. G. Jonsson and K. Lindgren, Nucl. Phys. A141, 355 (1970).

21. T. A. Gabriel and R. G. Alsmiller, Jr„ Phys. Reo. 182, 1033

(1969). 22. V. S. Barashenkov. F. G. Gereghi, A. S. Iljinov. G. G.

Jonsson, and V. D. Toneev, NucL Phys. A231. 462 (1974).

23. V. di Napoli. D. Margadonoa, F. Salvetti, H. G. de Carvalho, and J. B. Martins, Nad Jnstr. Methods 93. 77 (1971). 24. C. M. Lederer, J. B. Hollander and L Perlman, Table of

Isotopes. Wiley. New York (1967).

23. V. di Napoli. F. Salvetti. M. L Terranova, H. G. de Carvalho and J. B. Martins, Phys. Rea. CS. 206 (1973); V. di Napoli. A. M. Lacerenza. F. Salvetti, S. M. Terenzi, II. G. de Carvalho and J. B. Martins, J. Inorg. NucL Cheat. 35, 1419 (1973).

480
I. Jacob, R. Moreh and A. Wolf

Nucl. Phys. A291 , 1 (1977)

CL CM. SYM. A Z

MCTHOO

B1

REX. NO.

209 83

77 Ja 4 egf

REACTION RESULT excitation

ENERGY

SOURCE DETECTOR

ANGLE TYPE RANOf TYPE RANGE

G,MUT LFT 7 D 7 NAI-D 0

(7.29,7.632) (7.29,7.632 >

Abstract: A variable-energy y-sourcc is obtained by nuclear resonance scattering ofneutron-cr.pt arc y-rays through various scattering angles. An energy resolution of less than !0* 4

is obtained. Fb and Cd

targets were employed to scatter the 7.279 and 7.632 McV photons, respectively, of the neutron

capture y-rays of Fe. Variation of the angle of the resonantly scattered photons between 60’-! SO’ permits an energy scan of s 370 cV (for I’b) and s: 760 cV (for Cd) in any absorber. Thus nuclear energy levels in

IJ ‘, La, Cc, Cd and I0,, Bi absorbers were photoexcitcd and the corresponding values of gTg were extracted from the measured absorption curve.

7.28,7. 63MeV, RES ABS

ENERGY LOSS (eV

)

’60 200 24Q 280

i . i i l i

| =b SCAT7EF5? (7.279 MeV) \ 3*.= g/zrr> ! ABSORBER j

UJ

>-

UJ>

l.oi

1

. 00 -

0 39

0.03 -

0.97' 60* 65° 72’ 78’ 84* 90’

-I 1 ! I I L_

-j92000

-791 0C0 -90000

L39C00

Q

UJ

UJ

SCATTERING ANGLE (deg)

Fig. 4. (a) Normalized absorption spectrum of a

20, Bi absorber obtained by using a Pb scuitcrer of the 7.279 MeV y-line. (b) Another absorption spectrum usng the same absorber and a Cd scat'.crcr of the 7.632 MeV y-line.

FORM N8S-4II mtv. 7*1 4.641 USCOMM-NSS-OC

U.S. OePARTMCNTOP COMMERCE

NATIONAL lURItUOF STANOAROS

PHOTONUCLEAR DATA SHEET 481
Table 2 Summary ol experimental data and measured values of gT0 obtained using the y-monochromator

Isotope Thickness (9/cm1

)

Angle of dip

(deg) AE c

) (eV)

Effect (%) gra (meV)

"’Cd*) 33 128.0 505 3.5 150 ±20

,J4 La 28.2 80.0 225 0.40 8.0 ± 2.0

,J,U 18.2 100.5 322 0.27 7.1 ± 1.9 ,MLa 18.2 104.8 345 0.22 5.5 ± 1.8 ,40Ce‘) 26.3 90.0 273 1.3 25 ± 3 ’*"Bi 31.3 73.5 196 2.0 43 ± 8

’•’’Si* 31.5 68.8 404 1.8 92 ±12

The asterisk denotes a level at 7.632 McV phoiocxcited by a Cd scatterer. All other levels are at 7.279 MeV and were photoexdted by a Pb scatterer.

*) The absorbing isotope was arbitrarily assumed to be 1 ' ’Cd.

*) The absorbing isotope was arbitrarily assumed to be 140Ce.

*) Here AE is the energy difference between the incident y-line and the resonance level (assuming no

recoil correction in the absorbing nucleus).

^32
REP. R.M. Laszewskl and P. Axel

Phys. Rev. C 19, 342 (1979)

EL EM. SYM.

B1 209 83

METHOD REF. NO.

79 La 1

REACTION EXCITATION SOURCE OETECTOR

RESULT ENERGY TYPE RANGE TYPE RANGE ANGLE

G.6 ABX 4* 1 OO D 4-8 NAI-D 135

(4. 5-7. 5) 4. 5-7.

5

Average elastic photon scattering cross sections were measured for

3#*Bi, J#*Pb, wPb, ”*Pb, T1 and Hg at

excitation energies between 4.S MeV and the neutron emission threshold, with an energy resolution in the range between 50 and 150 keV. This resolution was sufficient to determine the strengths of most of the

strong levels in this energy region for “’’Pb; there are concentrations of strength in a few levels near 5.5 and

7 MeV with the sum of B(£l)t values equal to about 0.84 and 0.65 e

1 fm2

. respectively; each of these two groups of levels corresponds to only about 0.63% of the electric lipole sum rule. In the neighboring

iyyry*, approximately the same amount of strength is distributed among many more energy levels;

although this strength is spread in energy more than it is in ^'Pb. it remains relatively localized.

bks

3|t3

TABLE VL Transition strength comparison at 5.5 and 7 MeV.

5.0—6.0 MeV 6.5-7 .5 MeV

Nucleus /orrd£(MeVmb) %

20lPb strength i<r„dE (MoV mb) %

20lPb strength

B1 “»Pb

i«pb

l#*Pb TlHg

10.4

15.2

12.6

15.8

8.3 11.6

68%

100%

83%

104% 55%

76%

10.7 24.4

20.2

7.8

44%

100%

83%

32%

form N3S-418

(REV. 7-1 4- 44) USCOMM-NBS-OC

Ey (MeV)

FIG. 12. Comparison of the measured cross sections

of. respectively, from the top, 20*Pb, 20*Fb, 207 Pb, 209Bi, Tl, and Hg.

PHOTONUCLEAR DATA SHEET 483

NATIONAL BUREAU OF STANDARDS
J. C. McGeorge, A. C. Shotter, D. Branford, J. M. Reid

Nucl. Phys. A326 , 108 (1979)

REF. EL EM. SVM. A z

METMOO

Bi

ref. no.

209 33

79Mc2 hg

REACTION RESULT EXCITATION ENERGY

SOURCE OETECTOR

angle TYPf ft AN GC TYPE ft AN GC E,F N0X THR-110 d no SCD-D 105-170 90

Abstract: Fission of 2J2Th, 217 Np, 20,

Bi. IJ5 U and 23, U induced by 1 10 MeV electrons has been studied by means of surface barrier detectors. The resulting mass and kinetic energy distributions are

presented. Comparison with the liquid drop model predictions shows reasonable agreement in the case of 20,

Bi. The data are analysed in terms of a two component model of fission and the mean

total kinetic energies of the components are shown to depend linearly on Z,Z,(.4!'3 + /f} •'*). Interesting differences are found when the present results are compared with the recent photofission experiments of Areskoug tt al. and features in both sets of data correlate with changes of

fragment deformation implied by the calculations of Wilkins el al.

MASS AND EGY DISTRIB

E NUCLEAR REACTIONS ”7Np, 13JTh. 20*Bi; 2J*U. 2J5 U(e, 0. E = 110 MeV; measured fission fragment E. deduced mass.

* IIS 135 1S5 100 120 140

HEAVY FRAGnENT HASS

Fig. 1. The HFM yield distributions for elcctrofission of 2l,, Bi. 23: Th and 23 Np and spontaneous

fission of ;!2 Cf. Statistical uncertainties are shown where larger than the sire of the points in this and

succeeding diagrams. The solid line in the :,2 Cf case represents the experimental results ol Schmidt

ei al.

l2

). In the 2 °'’Bi case the solid line represents a Gaussian fit to the data while the solid lines in the other two cases are the result of a two component analysis (see text).

Table 2

Mean total KE (MeV)

Target

present work

semi-empirical [rel

*)

'*)]

*)

Width

present work

U.jj

171 8 + 3.4 168.5 169 4 11.6 + 0.1 usy 171.3 + 3.4 169 1 170 1 108+0.1

IJ2 Th 167.0 + 3.3 163.4 163 5 9.6 t0 1 U7 Np 174.3 + 3.0 171.9 173 3 1 1 .5 + 0.1 20, Bi 140 ±4 146.5 143.9 11.5 + 04

*) 0.1071 Z'/A

*) 0.1240Zl /.4

,;, + 22.2.

1/3 OVER

t"*V. 7-14.441 USCOMM.NBS-OC PHOTONUCLEAR DATA SHEET 484

U.S. DEPARTMENT OF COMMERCE

NATIONAL RuntAUOF STANDARDS
Fig. 2. Total fragment kinetic energy distributions in the electrofission of 30a

Bi, 33 Np and ' 3 I Th. The solid lines result from fitting a single Gaussian to the data in the ' na

Bi case and a double Gaussian

in the other cases.

5 100 120 140 160 ’80 hCavy frachEnt piass a n.u.

200

0

< ’60 • o

Z< ’to t

’20 4—

1S0

90 NpiI7

o u

1 ”

Th”«

C( «:

ii

**

’70 ’ 90 2’0 230

Z’«Z2y( A’ 1* .a2* )

F;g 3 Total fragment kinetic energy data from elcctrofission of J 3 , U. : 35 U. 3 J 7 Np, 23 : Th. :oa Bi and

for spontaneous fission of 3 !: Cf. (A) Mean TKF. versus HFM. The lines represent the LDM calculations of Nix and Swiatccki 1J

) - solid : 3 , U. short dash :,,

L'. long dash :oa

Bi. dot ,3T Np and dot dash 333 Th.

(B> Width of the TK.E distribution versus heavy fragment mass. (C) Mean total fragment kinetic energy

versus Zl Zji(A\ J +/4j 3

). (D| Mean total fragment kinetic energy of the symmetric (enclosed by the dashed line) and asymmetric components versus 7X 7., ( .4 J

J +

3

). In (AHC) and (D) the relative 435

uncertainties between targets are z 3 MeV and ihe absolute uncertainties are ±4 MeV.
T. Chapuran, R. Vodhanel , M.K. Brussel

Phys. Rev. C22, 1420 (1980)

REP.

metmoo

EL EM. SYM.

Bi 209 83

REP. NO.

80 Ch 3 hg

REACTION RESULT EXCITATION SOURCE OETECTOR

ENERGY TYPE RANGE

angle

G,G SPC 4-8 o OO SCD-D 127

(7.65)

Resonant photon scattering from “J*,J“Pb and **Bi has been measured fr<>m 4 MeV to the neutron threshoIds using cnncnca targets, UdU) detectors and bremsstrahlung beams with end-point energies ot /.U, 7.5. /.6, 8.0, _ 8.5, and 10.4 MeV. Energies and values ofgT0

2 /T were obtained for many levels not observed in previous photon

experiments. Spins of levels in “Pb and "*Pb were determined from the angular distributions, and ground-state branching ratios were obtained from self-absorption measurements for seven transitions in :MPb. The results are compared with earlier spectroscopic studies and with lower resolution average cross-section measurements. The

spectra of “’Pb and ”*Bt are discussed in terms of the excitations of the :o*Pb core. NUCLEAR REACTIONS J0*’ J9T,JW Pb, J0*Bl(y,y); enriched targets; resonance

fluorescence with 7.0, 7.5, 7.6, 8.0, 3.5, and 10.4 MeV bremsstrahlung. Measured £r, fr at 90* and 127*, and self-absorption; deduced gT^/T,

FIG. 10. Spectrum for 7.6 MeV bremsstrahlung scattered at 127* from a natural bismuth target (100% :o*Bi). One

channel corresponds to 1.42 keV. 'okm N8S-418

IRCV. 7-1 4.S4I USCOMM*NSS*OC PHOTONUCLEAR DATA SHEET 486

U.S. DEPARTMENT OP COMMERCE

NATIONAL BUREAU OF STANDARDS
TABLE Vni. Comparison of measured level widths

for m*BL Values of gr0 7r were extracted from the present experiment assuming dipole angular distributions; uncertainties Include statistical and calibration errors. Parentheses indicate tentative assignments;

levels in brackets are probably unresolved multiplets.

Energy4 grj/r* *r0 7rb *r0 7 r- (MeV * keV) (eV) (eV) (eV)

3.980 *4 0.88*0.31 4.757*2 2.7 ±0.7) 4.797*2 3.5 ±0.9) 4.831*2 1.5 ±0.3*

(5.183*4) 0.9 ±0.3 5.236*2 1.4 *0.3 5.281*2 5.5 ±l.l| 5.293*2 2.2 *0.6 \ 5.314*2 3.0 *0.9

5.354 *4 3.3 *0.8

{5.410> 3.3 ±0.8

(5.424*4) 1.7 *0.5

5.440 *4 1.6 *0.5 5.462*4 1.4 *0.4 5.485*2 4.0 ±0.8) 5.497*2 4.8 ±0.9)

{5.509} 6.8 *1.2)

{5.536} 4.4 ±1.0

5.554 *2 2.6 *0.8 5.573*4 1.7 ±1.0 5.590*2 3.2 *0.9 5.662*2 1.6 *0.4

(6.911*4) 2.4 ±0.5

(6.945*4) 2.1 *0.6 6.983*4 2.6 ±0.5

(7.106*4) 1.0 *0.3 7.171*4 4.7 *1.0 7.246*4 3.7 *0.8 7.264*4 2.4 *0.9 7.287*4 2.6 ±0.7

7.360 *4 4.3 ±1.1

0.82*0.08

2.9 *0.5

10 d 2.7 ±0.5

1.4 ±0.3

12 ±5

8.3 ±3.7

17 ±6

6.6 * 2.6

* This work.

b Reference 10. 'Reference 36.

d Uncertainty reported “in excess of 50%.”

487
___ H.-D. Lemke, B. Ziegler, M. Mutterer, J.P. Theobald, N. Carjan

' Nucl. Phys. A342 , 37 (1980)

El. CM. SVM. A Z

METHOD

Bi

REF. NO.

209 83

80 Le 3 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TV** RANGE TYPE RANGE

S,F ABX 40-65 D 40-65 I0N-I 4PI

Abstract: The absolute photofission cross section of

_&9 Bi has been measured with monoenergetic

y-radiation between 40 and 65 MeV photon energy. Cross-section data have been obtained with an

accuracy between 9 and 20%. The experimental result is compared with the excitation function

calculated on the basis of the statistical model. In order to reproduce the measured data on <ryl, the

(y, n) cross section must decrease with increasing photon energy faster than the experimental total

(y. n) cross section. This behaviour can possibly be explained by the assumption that after photon

absorption a compound nucleus is formed only for a small, and with photon energy decreasing,

fraction of all decays.

E PHOTOFISSION 20,Bi(y, f), E * 40-65 MeV; measured <r: deduced total photoabsorption

<r for compound nucleus formation.

40 50 60

Photon energy IMeVI

Fig. 9. The result of the present measurement. The dashed curve represents data of Moretto et al. '). the dashed-dotted curve data of Tiirck at at.

4

).

Table l Summary of data with monochromatic photons

E* (MeV) E„ (MeV) Ni,(10‘°) V,, tr y.i (10' M, cm

5

)

65 64.45 1.70 234*47 61.5*12.2

60 59.49 1.4

1

ISK x 33 59.4 ± 10.3 55 54.52 3.88 3U r 39 36 1 ±4.4 50 49.55 9.95 407 t 42 18.2* 1.9 47.5 47.07 10.40 2nl t 37 114* 1.6 45 44.59 30.50 604 t '8 9.7 *0.8

42.5 42.10 16.29 24 t t 2*4 6 6 *0.8 40 39 60 32.92 208 i

•< 1 2.9 *0.4

£’ is ihe kinetic energy of the positron (MeV); £„ is the o in energy of the annihilation line (MeV); .V,, is the total number of monochromatic photons for that energy. V., is the total number of fission events produced by .V„ and <ryl is the fission cross section deduced from V„ and ,V, (

.

FORM H8S-4IE

ISIV. 7-14.641 USCOMM-NISOC PHOTONUCLEAR DATA SHEET 488

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
ref. N.K. Sherman, C.K. Ross, K.H. Lokan

Phys. Rev. C2T_, 2328 (1980)

EL EM. SYM.

Bi 209 33

METHOD REF. NO.

80 Sh 10 egf

reaction RESUL T EXCITATION ENERGY

SOURCE OETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,MUT ABX 3-30 C 42 T0F-D 4PI

D(G,N) SPECTROMETER

Photon absorption by Al. Ta. and Bi between 3 and 30 McV was measured using as a photon

spectrometer a photoneutron time-of-flight detector and a liquid deuterium target. The atomic cross sections of Ta and Bi at the lowest energies (and of Al at higher energies) agree with calculated values appearing in published tabulations but exceed them at 25 MeV by about 1% in Ta and 3% in Bi. Calculations by others

using empirical Coulomb corrections and improved screening corrections to the cross section lor pair production by the nucleus agree with experiment to within (0 5^0.4)^. Best experimental values of the combined correction for Bi are given.

NUCLEAR REACTIONS 2 ‘A1, ,31 Ta, :0J Di ; measured total photon absorption

tr r (E); observed GDR; deduced election pair production cr ,^{ £T) ; E=3.0 to JO.O MeV; resolution 500 keV; deduced experimental values for Bi of the combined

Coulomb and screening correction; : :i ( y ,«> LD./TOT spectrometer.

NRCC

FIG. 2. The measured Bi photon absorption cross

section is plotted (solid circles) against photon energy. The bars represent statistical error. The hatched

^ area, the total (y ,n) cross section (Ref '. 14 and 15), approximates the total photonuclcar absorption. The

crosses (f ) represent the calculated iRef. C) atomic cross section of Pb scaled up to Z - 83. Previous cal- culations (Ref. 5) are denoted by {X).

(OVER)

FORM NSS-41C

IPEV. ?.t 4-«4> USCOMM.OC 24010-P64

U.S. 0EPARTM6NT CO-.IM-IPC NATIONAL BUREAlC” S 1;.'.;;.-/ PHOTONUCLEAR DATA SHEET 489
TABLE IV. Measured vatues <*,p(Bl) of the absorption cross section of bismuth and their

statistical errors «„ are listed against photon energy w along with the atomic cross sections

?z<Bl) and nuclear pair cross sections aK

( BO obtained from them. The amounts <5<rz and by which <r z( Bl) and <tx(B1) exceed the calculated * values <rz

(calc) and c^tcalc) are also given.

(MeV)

<WBi)

(b) «o

(mb)

<xz(Bl)

b

(b)

6oz (mb)

<7jf(Bi) (b) ag( calc)

(b) 6ag

(b)

3.869 14.846 ±76.5 14.841 +103 5.354 5.80 +0.05

4.327 14.781 44.5 14.775 -25 6.500 6.52 -0.02

4.330 14.927 33.5 14.919 -6 7.282 7.30 -0.02

5.333 15.091 30.5 15.081 -54 7.961 8.00 -0.04

5.837 15.324 29.5 15.311 -79 3.649 8.70 -0.05

6.348 15.624 31 15.606 +36 9.311 9.28 +0.03

6.870 15.878 32 15.856 +44 9.919 9.85 +0.07

7.404 16.100 33.5 16.072 -15 10.422 10.42 0

7.936 16.412 37 16.377 +27 10.987 10.96 +0.03

8.382 16.810 39 16.763 +158 11.613 11.48 +0.13

8.936 17.013 42.5 16.953 +63 12.028 11.96 +0.07

9.476 17.402 45 17.324 +174 12.574 12.42 +0.15

9.992 17.673 47.5 17.571 +166 13.004 12.92 +0.08

10.514 17.945 50 17.807 +132 13.407 13.30 -0.11

11.039 18.293 54 18.105 +145 13.880 13.75 +0.13

11.557 18.583 58.5 18.316 +91 14.229 14.12 +0.11

12.088 19.137 60.5 18.770 +283 14.803 14.55 +0.25

12.629 19.244 66 18.744 -6 14.919 14.92 0 13.174 19.669 68.5 19.049 +49 15.334 15.33 0 13.715 19.861 76.5 19.219 -46 15.619 15.66 -0.04

14.253 20.095 80.5 19.575 +40 16.088 16.02 +0.07

14.780 20.165 89 19.695 -90 16.280 . 16.32 -0.04

15.293 20.299 90.5 19.922 -90 16.535 16.64 -0.06

15.840 20.428 93 20.143 -92 16.893 16.95 -0.06

16.422 20.738 94.5 20.523 +58 17.343 17.24 *0.10

16.977 21.082 108.5 20.910 +223 17.805 17.56 *0.24

17.500 20.972 112 20.830 -70 17.785 17.35 -0.10

18.078 21.532

116 21.413 +303 18.433 18.14 +0.30

18.665 21.395 113 21.295 -30 13.385 18.41 +0.03

19.286 21.513 122 21.428 -117 IS. 578 18.69 -0.11

19.856 21.905 146.5. 21.833 *78 19.033 18.96 +0.07

20.370 22.147 148.5 22.086 +156 19.241 19.17 +0.17

20.907 22.286 154 22.232 122 19.532 19.41 +0.12

21.468 22.247 157 22.198 -87 1 9 ,o o3 19.62 • 0.07

. 22.055 22.589 161 22.544 *57 19.944 19.87 ‘0.07 22.670 22.862 167.5 22.822 -157 20.277 20.08 -0.20

23.314 22.906 170.5 22.371 +4 20.334 20.34 • 0.04

23.989 23.098 173 23.067 +2 20.630 20. GO -0.03

24.697 23.348 182 23.318 +48 20.923 20. 85 +0.07

25.312 23.504 229.5 23.476 ‘26 21.126 21.08 +0.05

25.825 24.074 239.5 24.049 +462 21.724 21.27 +0.45

26.355 24.281 242 24.258 + 521 21.238 21.45 +0. 50 26.903 23.803 247 23.782 -103 21.502 21.62 -0. 12 27.470 24.142 251 24.122 •62 21.852 21.80 +0.05

1 Calculated atomic cross section values cz (calc) wore obtained by interpolation of tables compiled by J. H. Hubbell, H. A. Gimm, and l. Overbd (private communication).

b Obtained by subtracting the total photoneutron cross section measured (Ref. 15) by L. M. Young from <rnp(Bl). See also Ref. 14.

490
ref. M. Schumacher, F. Smend, W. Muckenheim, P. Rullhusen, H.G. Bfirner

Z. Phys. A3Q0 , 193 (1981)

ELEM. SYM.

Bi 209 83

METHOO REF. NO.

81 Sc 6 egf

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,G ABX 2-7 2-7 SCD-D 90

Elastic scattering by nuclei in the range of mass numbers between 64 and 238 has been 2.60-7 . T 68 MEV

studied with monochromatic photons in the energy range between 2 and 8 MeV. These

photons were provided either by a Ti(/t.y) source installed in the tangential through

channel of the Grenoble high flux reactor, or by :-l Na and 56Co sources produced by

deuteFon bombardment of A1 or Fe at the Gottingen cyclotron. The photoexcitation of

23 nuclear levels has been observed and the decay properties and groundstate widths of

the majority of these levels have. been determined. For the lead scattering target the co- herent elastic differential cross section has been studied in detail. There is evidence that below the photo-neutron threshold the elastic scattering via virtual photoexcitation of

the nucleus can be approximated by extrapolating the real part of the Giant Dipole Resonance amplitude along a Lorentzian curve. Coulomb corrections to Delbriick scat- tering seem to play a small role at 6.5 MeV.

Table I. Differential cross sections for elastic scattering [Urr ,1(2)"* of photons from 50 Co and : “Na sources bv different scattering tareets.

in units of nb sr. Errors in the last digits are given in parentheses.

9

leg

Scattering

targets

1599* (MeV)2.754°

( MeVi

3.010* (MeV)

3.202* (MeV)

3.254* (MeV)

3.273* (MeV)

3.452* (MeV)

90 ”*u 52.7(25) 57.5(15)- 56( 16) 47(4) 456 U0) c 34(6) 49(141

:o, Bi 33.1(301 32 ill 33(11) 32(4) 25.6(20) 29(6

1

33(15) "“Pb 31.5(23) 31.0i Ibi 35 (8) 27(3) 26.6(22) 25(4) 23 (8) "*‘T1 31.5(33) - 27(12) 32(5) 24 (3) 22(7) 34(151 “‘Hg 30.0(27) - 24(10) 28(5) 25.5(18) 26(8) 20 (8) “‘W 215(11) - 17 (7) 19(3) 18.4(15) 18(5) 21 Ibl l,t Ta 20.0(15) 19.2 ibl 193(20)- 10(4) 17.3(21) 18(5) 21 (8) 165 Ho 15.9(13) - 17(10) 13(6) 15.6(20) 18(8) “Nd 11.4 (7) 14.2 |5l“ 15 (7) 14(3) 24.2(12)“ 13(3) 9 (6) M,Ce 11.1 (9) 11.0 i5) - 11(3) 95(13) 8(4) ‘”J 8.4(101 86 (5) - 9(2) 7 (1) 5(3) _

"*'Sb 8.0t 1 1

)

- - 10(4) 6.8(19) - 1570(50)“ "“Sn 6.5 17) 70 ( 5) 5(2) 7.6 (8) 6(3) - -“Cd 6.2 (5) - - 6(2) 6.6 (8) 7(3) -

i:o :s«U 55.1(25) 64 |4t- 43(1 5l 55(5) 574 ( 10)

c m

48(5) 48(11) Ta 27.5(15) 25.0 -9, 227i20) < 22(5) 21 (2) 22(8) "*‘Nd 17.9(30) 1 7 u |U| J - - 29.8(47)“ - -

1 5ls Co source in Fe lattice 6 :i Na source in \l lattice ipart of data have been published elsewhere!

: Transitions to excited states observed in addition to the ground-state transition

“ Photoexcitation of nuclear level identified tront ihe M/e ot the differential cross section

= o»M M3V41I

;p e v. ?• 1 4- USCOMM.OC 2G010-P64

(OVER)

U.S. OE® ARTVSNT Of NATIONAL SLREAu C r S'. 5 A ~ ’ PHOTONUCLEAR DATA SHEET 491
Table

4.

Properties

of

levels

observed

by

photoexcitation.

Ula/JO

)

N,t:

experimental

differential

cross

section

per

identified

isotope

or

element

for

resonance

scattering

through

O

=

90°

J":

spin-parity

of

excited

level;

angular

corTable 2. Elastic differential cross sections J

a

JQ(0»9O°) in |ib sr measured with the Tibi. '/I source and compared with theoretical predictions. n: predicted number of levels in a J£ = 25 eV interval at 6.5 MeV. Errors in the last digits are given in parentheses

Scattering

target

6.418 MeV 6.555 MeV 6.759 MeV 7.168 MeV H

exp. th. exp. th. exp. th. exp. th.

J J »U 23 112) 10.3 _ _ _ _ - 45

20*Bi - - 219(39)'’' 8.0 12 (4) 7.4 1.5(3)- 10 5 "

5.7 0.1 “'Pb 7.0(15) 8.6 - - 6.5(11) 7.4 - - 0.05 “T1 1586 (92)*-' 7.5 - - 13 (3l

b 6.0 - - 0.4 “'Hg 12 (3) 7.8 74(17)" 6.5 6.7(15) 6.4 - - 3.4 ««w 159 (10)*-' 6.6 306(33)*-' 6.3 20 (2)*-' 5.6 - - 13 ‘“'Ta 68 (4)*' 6.3 - - 10.1(12)'’' 5.3 - - 28

,#5 Ho 15 (3)" 4.7 - - 9.5(14)" 3.9 - - 18 “'Ce 4.1(21) 4.1 - - 17 (1)"' 3.6 - - 0.04 “'Sn 4.2(13) 3.0 - - 2.5 15) 2.7 - - 1.9 “'Mo 1,474 (44)*-' 2.5 407(39)*-' 2.5 8.5115)’’-' 2.3 817(258)'’-' 10 0.5 “'Zn 14 (8) 1.6 - - 1.8 (5) 1.5 - 0.3

* Transitions to excited slates observed ” Photocxcitation identified from size of differential cross section

' Photoexcitation reported in [11]

o

5>

~ —

+ g

II - M C

c n

= •*

2 -5 3 —

.Sr e

>u

I? §

i e

L.

.'a

cs _

£ f

2

I «/> I I I

A it » /l -

30 r*\ r“ ^I © v* r- — arioso

o - d vo n i i n H o’ d d d d d » o

— 30 r-> . O' O © O O l

3 S

— o'

i C4 N

— — , os' —

30 >f> —

r* m — r-n r*i ri o O O o o d o o c

n ri ao n m r~\ *r\ *r\ r*+ r** dooo' o'

i C'i r- i i/“> »/i —

3 2

d o'

t©©r""T © O *"* t -T */. o — r- r-» cm ae x -C-CO-Tric/-, -rrin

r*i -o -r r- >o — — —

inwiri >o-iin^-'rin-- ,n-r,

iNfnvdr^'O'dd'Ci'C'O^'C'C 'Ci -c

•23aahHl$O - > H (- I- =

-3 -3 z z z

*i ^ ^ x 4“. — '/"I '/D C

-r *r *c*> r- —

-i O C rw

/ Z /. 42 Z

—> W l>

II - 5

34 2 “

5-3 |

*-» 3

o - Z s

c. s - 3 - ^ C — /I 2j U 2

J3 £ 2

S = 2

$ t

§ J

5

- k. c

I—* t—. c. ^ "23 2-

i 1 » -

Fig. Differential cross sections for elastic scattering of photons

by l A I "

r> ', Bi. iBi

" J1 TI and iCl "*‘Hg through 0 = 90°. Solid lines: calculated including R. T. lowest-order D. and N (Lorentzian shapei scattering

492
ref. J. Uegaki, K. Shoda, M. Sugawara, T. Saito, H. Tsubota

Nucl . Phys. A371 , 93 (1981)

elem. SYM.

Bi 209 83

METHOD ref. NO. 81 Ue 2 hg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TVPI RANGE TYP* RANGE

E,P ABX 4-23 D 17-23 MAG-D DST

G,P RLX 4-21 c ran MAG-D oco — 1

Bremsstrahlung protron yields curves and photoproton spectra are given in Figs. 4 & 5. Subtracted proton spectra are given in Figs. 8 thru 11.

Abstract: Differential cross sections at several scattering angles and proton spectra around the e. spin-flip and i . non-spin-llip IAR in -""Bi were measured with the (e. p) reaction using a broad-ranae

'magnetic spectrometer and 100 solid-state detectors. Experiments on the (y. pt reaction usina bremsstrahlung were also performed on the same subjects using the same detector system and

geometry as for the (e. p) reaction experiments. Both data agree well with each other when the

virtual photon theory is used. Strengths deduced for the resonance at the a. IAS at = 125.3® arc in basic agreement with previous data which arc in contradiction with the results of the <p. yn) reaction and /.'-decay Proton decay modes of these resonances were deduced by the photondifference method. Proton groups emitted through the i„ IAR are found to have a decay mode

typical ol the IAS and leave the residual nucleus in neutron I p-l h states. The decay mode at the a. IAR shows an anomalous reaction process as do previous data on the f. spttvflip IAR in ‘•‘“La!

E ^iU^-LEAR REACTIONS " Bite. pi. (y. p). E = 17-23 McV bremsstrahlung: measured

A'p. -"“Hi deduced decay modes for IAR. Natural target.

Fig. I. -°®Bi(e. p> cross sections at 0** =. b2®. do® and 125 3® The excitation energies of the g, and i IAS arc shown by arrows. Solid lines show the best fit curves with eq. (7). ^

FSSM NBS-41S

IR«V. 7-1 4.441 USCOMM-NBS-OC

(OVER)

PHOTONUCLEAR DATA SHEET 493

U.S. DEPARTMENT OF COMMERCE

NATIONAL lURCAClOF 3TANOAAOS
Fig. 2. Proton spectra tor the -"'‘Bite, p) reactions at O'*” » 125.3° Incident electron energies are

E, - 20.8. 19.2. 18.4. 17.6. 16.8 and 16.0 MeV. Only the statistical errors are shown in the spectra.

Fig. 7. (a) J0, Bi(7. p0 ) differential cross section at 0'* ,, = 125.3° (present results), (b) J0’Bi(y. p0 ) cross

section calculated by the principle of detailed balance from the :o*Pb(p, y0) data at 0

U° » 90° [ref. ")].

(c) 20

**Bi(y, n) cross section [ref. '*)].

Table I Resonance parameters for the

g, and i v IAR on

20°Bi

IAS Reaction £.

(MeV) Orb • MeV)

K“..4£

Oib MeV)

r IAS (eV)

TjAS/pu.M., Ref.

8* 2 (P. P ) 18.645 ±0.006 t. 10)

(P- 7o) 18.657+0.030 °) < 10 ~ 0.33 ’)

(e. p) 18.7 140 ±20 430 ±55 4

) (c. P) 18.7 ±0.1 840 ± 150 5 1 0 ± 90 68 ±15 210 ±41 present work

(7s«». P) 18.7 ±0.1 present work

'll.] (P. P ) I9.439±0.0I0 • . 10)

(P. 70 ) - 190 0.20 ’) (e.p) 19.5 1 70 ± 20 0.21 ±0.03 4

) (e. p) 19.5 ±0.1 1 600 ± 250 1060± 160 1 70 ± 26 0.2! ±0.03 present work

(7m.. P) 19.5 ±0.1 present work

') This value was given by the (p. y) reaction r

). 494

8

(deg )

8

(deg)

Fig

tv

Angular

diNiribiiiions

of

the

t„

(closed

circles)

and

ihe

g.

(open

circles)

resonance

strength,

and

the

proton

>icld (

x

marks)

at

the

1\

continuum

excited

region.

[j9<r
REP. I. Bergqvist v B. Lundberg , L. Nilsson, and N. Starfelt

Phys. Letters _12, 670 (1966)

ELEM. STM.

Bi

A

210

L

83

MCTHOO

"an de Graaff

REP. NO.

66 Be 1 EGF

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPt RAN OC TYPE RANGE

N,G SPC 11 D 7 NAI-D 8-18

8h \ '%'x

Fig. X. Gamma-ray spectra emitted in the capture of 7.4 MeV neutrons. The clashed line is the spectrum

calculated for the decay of a compound nucleus. The dot-dashed line is the response function of the gamma-ray spectrometer for 16.0 MeV y rays. Single-particle states as determined from (d,p) reactions are shown.

FORM MBS-41S

(R«V. 7*1 4*441' UICOMM.OC M0I0.PS4 PHOTONUCLEAR DATA SHEET 497

U.S. DEPARTMENT OF COMM cnCE

NATIONAL BUREAU OF STAnDARO^
.

'

.

. -

.

- 498
I

?'

y

Ra

A=226

RfiDILW

Z=88

Radium and polonium were the first radioactive elements to

be discovered by the radiochemical method* Marie Curie had

observed that the -activity of pitchblende was four or five

t times greater than one might expect from its uranium

content. She concluded- that the ore must contain another

; radioactive element in addititon to uranium and that, since

the composition of the ore was krTown, the active element

must be present in7 an extremely small amount and therefore

.must by very radioactive. Pierre and Marie Curie obtained

severer tons of the pitchblende' and made elaborate and

tedious fractionations of the complex ore. Mme. Curie

- exmained each fraction and in barium chloride found a white

salt,,radium chloride, that glowed in the dark. The new

n substance was named radium* the giver of- rays.

Ra

A=226

A

Ra

(499 A=226
.. V.

[500

j
REF. _E. A. Zhagrov, Yu. A. Nerailov, and Yu.

Yad. Fiz. 2, 264 (1968)

Sov. J. Nucl. Phys. 7, 183 (1968)

METHOD

A. Selitskii

EL EM. SYM.

Ra 226 88

REF. NO.

68 Zh 1 hmg

REACTION RESULT excitation

ENERGY

SOURCE oetector

ANGLE TYPE RANGE TYPE RANGE

G,F RLY THR-25 C 9-25 TRK-I DST

s26 Ra(Y)f) threshold was found to be 8.5±»5 MeV.

W(6) = 1 + asin2 0.

FIG. 1 . Relative yield of

photofission of Ra 226 as a function of the bremsstrahlung endpoint energy; light symbols-measured with a linear accelerator;

filled symbols- measured with a betratron. FIG. 3. Angular distributions of the emission of Ra 216 photofission fragments relative to the direction of the bremsstrahlung beam. The

curves were plotted by least squares.

FIG. 2. Photofission yield per roentgen-nucleus for U

2J * and Ra 2“. The arrows denote the positions of the thresholds.

FIG. 4. Anisotropy coefficient a

vs. the quantity (

E

0 - T), where E0

is the end-point energy and T is a constant equal to 5 for Th 232 and to 6 for Ra224

. The filled points pertain to Ra22* and the light ones to Th 232

(£,-t). M«v

form NBS-41S mtv. 7-14-441 USC OMM-OC 2601 0-P64 PHOTONUCLEAR OATA SHEET 501

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS
E. A. Zhagrov, Yu. A. Nemllov, N.V. Nikitina,

Yad. Fiz. 13, 934 (1971)

Sov. J. Nucl. Fhys. 1J3, 537 (1971)

METHOD

Yu. A. Selitskii

ELEM. SYM.

Ra 226 88

REF. NO.

71 Zh 1 hag

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

angle

TYPE RANGE TYPE RANGE

G.F ABX 9-20 C 9-20 T HK 4 PI

r N/F EMISSION WIDTH ~ = 570

HG. 3. Ram photofistion cron

lections. Solid curve-ibsolute measurements; dashed curve-relative measurements.

NUm •fw

8 fttoV r.MaV

M»V-*

u— I.I-I0-* I4i> 14 r.«- io-' Tb» «aio-* MS 40 3 2 10-' 9 4I0-* ISO SS 5 2 I0-*

The |)hoto(ission cross section of Ra2** Is measured in the energy range 9-20 MeV as a basis for oe- termintng the ratio of the neutron emission width to (he fission width. The value obtained for i _/rf is compared with a calculation based on the statistical model.

form N3S-418

IR EV. 7-1 4-04) U5C OMM-DC 26010-P64

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANOAROS PHOTONUCLEAR DATA SHEET 502
REF.

METHOD

E.A. Zhagrov, Yu. A. Nemilov, V.A. Nikolaev, Yu. A.

and Yu.M. Tsipenyuk

ZhETF Pis. Red. 20 , 220 (1974)

JETP Lett. 20, 95 (1974)

Selitskii, EL EM. STM.

Ra 226 88

REF. NO.

74 Zh 1 hmg

REACTION RESULT EXCITATION ENERGY

SOURCE DETECTOR

ANGLE TYPE RANGE TYPE RANGE G,F RLY 10- 15 C 11- 15 TRK-I DST

SYM AND ASYM YIELDS

We measured the yields and angular anisotropy of the symmetrical and antisymmetrical components

in the fission of 2J‘Ra in the range of bremsstrahlung limiting energies 11-15 MeV. In this energy

interval, the two components have practically the same angular distribution.

FIG. 2. Top—Integral yields of symmetrical (Ys) and asymmetrical CYa) fission components; the dashed curve shows

the fragment yield in the photofission of *I5Ra. 18 * Bottom

angular anisotropy of the fragment emission for the symmetrical W and asymmetrical (*) components. Solid curve—data on the anisotropy of all the fragments, 181 dashed—the same

curve shifted 1.5 MeV towards higher energies.

gE.A. Zhagrov et al., Yad. Fiz. ]_. 264 (1968); Sov. J. Nucl. Phys. 7_, 203 (1968) .

form N3S-418

(REV. 7- t 4-64) USCOMM-N0S-OC PHOTONUCLEAR DATA SHEET 503

u.s. oepartmentof COMMERCE

NATIONAL BUREAU OP STANDARDS
REF. E.B. Bazhanov, E.A. Zhagrov, Yu. A. NemiLov, V.A. Nikolaev,

Yu.A. Selitskii, and Yu.M. Tsipenyuk

Yad. Fiz. 22r-36 (1975)

Sov. J. Nucl. Phys. 22, 17 (1975)

ELEM. SYM.

Ra 226 88

METHOD REF. NO. 75 Ba 9 hmg

REACTION result EXCITATION ENERGY

SOURCE DETECTOR

ANGLE

TYPE RANGE TYPE RANGE G,F RLY THR- 28 C 11- 28 TRK-I DST

We measured the distributions, with respect to the fragment track diameters in glass detectors, in the

pbotofission of 3:6Ra in the range of bremsstrahlung y-quantum limiting energies Eq from 11 to 28 MeV.

The components of the symmetrical and asymmetrical fission are separated, and yield and anisotropy

curves are obtained as functions of E& At all excitation energies, the anisotropies of the symmetrical and • asymmetrical fission coincide within the limits of errors. Near the fission barrier, l:s Ra is fissioned predominantly asymmetrically, just as the heavier nuclei.

FIG. 3. Relative yield of the component of the symmetrical fission as a function of the end-point energy of the y-ray bremsstrahlung spectrum (a). Resolution of the total photofission yield (Y) of 324 R3

l*’

10

] into symmetrical (Ys ) and asymmetrical (Ya ) components (b).

2E.A. Zhagrov et al., Nucl. Phys. A213 , 436 (1973)

.

3 E. Konecny et al., Phys. Lett. 45B , 329 (1973)

.

Q

E.A. Zhagrov et al . , Yad. Fiz. 13 , 934 (1971); Sov. J. Nucl. Phys. L3,

520 (1971)

.

10

E.A. Zhagrov et al., Yad. Fiz. 7_, 264

(1968); Sov. J. Nucl. Phys. !_• 203 (1968).

form NSS-418

<R EV. 7-1 4- 641 USCOMM-NBS-OC

FIG. 4 FIG. 5

FIG. 4. Dependence of the relative yield of the photofission symmetrical component on the excitation energy in excess of the fission barrier- light circles 134Ra (present work), dark drcles- 317Ra [’J, dash- dot curve117Ac, dashed curve- mAc I 1

). FIG. 5. Dependence of the anisotropy of the symmetrical (a) and

asymmetrical (b) fission of 114Ra on the end-point energy of the brems- strahlung y spectrum. Solid curve-anisotropy without resolution into components ( ,0

] ; the dashed curve is the same line shifted by 1 .5 MeV.

U.S. DEPARTMENT OF COMMERCE

NATION AU BUREAU OF STANDARDS PH0T0NUCLEAR DATA SHEET 504
Ac

A=227

ACTINIUM -

Z=89

A metalic element named after the Greek word <1ktinos,

meaning "ray". It was discovered by A. Debierne in 1899 and

independently by F. 0. Giesel in 1902: The isotope

discovered, Ac227

, can be isolated in pure form from uranium

ores only with difficulty. Actinium is colorless and

closely resembles the lanthanide elements in its chemical

properties and is^regarded as the prototype for the 14

following rare-earthlike (actinide) elements of atomic

numbers 90-103 inclusive.

Ac

A=227

505

Ac

A=227
)

!'

[506^

II

II

11

1

I

I

I

/
REF- V.E. Zhuchko, Yu. A. Selitskii, V.B

& Yu.M. Tsipenyuk

Yad. Fiz. 27, 301 (1978)

Sov. J. NucT. Phys. 27, 163 (1978)

METHOD

. Funshtein, S.V. Khlebnikov EL EM. SYM. A

Ac

REF. NO.

Z

227 89

78 Zh 4 hmg

REACTION RESULT EXCITATION SOURCE OETECTORANGLE ENERGY TYPE RANGE TYPE DANSC G,F ABX THR-17 C 7-16 TRK-I 2PI

(7.5)

-

The cross lection for photofusion of mAc by bremsstrahlung is obtained in the energy range 7-16 MeV

from measurements of the integrated yields of fragments. The giant resonance has two peaks characteristic of a defamed nucleus with deformation parameter 0 = 0.14. The dependence of the deformation of the ground state of nuclei in the actinide region on the number of nucleons is The fissility of the

227As nucleus is analyzed. The mAc fusion barrier is 7.6 ±0.2 MeV.

FIG. 1. Cross section for photofission of nTAc. Only

the statistical errors are shown.

FIG. 3. Fissility of mAc

near the barrier. In the insert we have shown for comparison the results

of Ref. 20 obtained In the reaction ~s Ra(3He.40j:, Ac.

a taken to be average of absorption cross section for Au and Th (Probably used (Y,sn)

data)

Z • ZC

- s

- . FORM M8S-41I

(PCV. 7.14.441 U3COMM.OC 26010* P04 PHOTONUCLEAR DATA SHEET 507

U.S. OEPARTMCV

NATIONAL oL'REAl
'

-

508

'
509
« ' * V

l

• k
.

.

-

.

.

'

DEFINITIONS OF ABBREVIATIONS AND SYMBOLS

Note: In this list definitions are given for various photoneutron

reactions in which the following symbols are used: N, NL, nN, SN and XN.

Corresponding definitions apply for reactions involving other nuclear particles

where the symbols N (neutron) is replaced by, e.g. P, D, T, HE, A etc. Where

unknown reactions result in the production of a specific radionuclide, the

chemical symbol and mass number is listed as the reaction product, e.g. a G,NA22

reaction in 59q 0 .

A alpha particle response function. Contrast

with D = discrete.

ANAL analysis

CCH cloud chamber

ABI absolute integrated cross-section

data CF compared with

ABX absolute cross-section data CHRGD charged

ABY absolute yield data. Often means CMPT Compton

cross-section per equivalent

quantum is listed. COIN coincidence, coincide

COINC

ACT measurement of induced radioactivity of the target COH coherent

ASM asymmetric, asymmetry CK Cerenkov

AVG average D deuteron or discrete. When

discrete, it is used to

BBL bubble chamber describe a photon source or

a detector response function.

BEL reduced electric radiative Contrast with C = continuous.

B ( EL

)

transition probability

DLTE energy loss

BF3 BF3 neutron counter with moderator e.g., Hal pern detector,

long counter

DLTQ momentum transfer

DST distribution

BML reduced magnetic radiative

transition probability, B(ML) DT BAL detailed balance

BREAKS levels located by "breaks" in the

yield curve

E electron

E/ inelastically scattered

BRKUP breakup electron

BRMS bremsstrahlung E+ positron

BTW between EDST energy distribution or spectrum

C continuous. Used to describe a photon source or a detector E/N used only to indicate a coinci

dence experiment as in ( E , E/N

)

510
.

.

'r

,

'

.

'
N stands for any outgoing

particle measured in coinciKE kinetic energy

dence with an inelastically L may be an integer or zero scattered electron. Distin- that always follows a reaction

guish from eg., (E,N) which is product symbol. This is used

used to represent an electron to indicate transitions to

induced reaction when only the

outgoing particle N is detected.

specific states in the residual

nuclide. When the letter is

used as in (G,NL) the cross

EMU emulsions (photographic plates) section given is that for the sum of transitions to two or

EXCIT excited more specific final states.

F fission LFT excited state lifetime

FMF form factor LIM limit

FM-1 inverse femtometers LV ,LVS level, levels

FRAG fragment LQD 1 iquid

G photon MAG magnetic spectrometer

G/ inelastically scattered photon MEAS measurement(s)

G-WIDTH gamma-ray transition width MGC magnetic Compton spectrometer

HAD hadrons, hadron production MGP magnetic pair spectrometer

HE 3He particle MOD moderated neutron detector not

He3 employing a BF3 counter, e.g.

rhodium foil, Szilard-Chalmers

I NT interaction, integral,

intensity

reaction, 3 He, 6 Li reactions,

GD loaded liquid scintillator.

etc.

INC includes

MSP mass spectrometer

ION ionization chamber

MULT multiple, multipole, multiplicity

ISOB i sobari c MU-T used only in combination with G

ISM isomer to indicate a total photon

absorption cross section measureJ multiplicity of particle ment, i.e. (G,MU-T)

defined by following symbol

e.g. (G,PJN) with remark N neutron (see also XN and SN).

J = 2, 3, 5,

7

The notation (G,N) is used to

indicate a reaction in which only

JPI spin and parity of a nuclear a single neutron is emitted, i.e.

J-PI state the reaction that can, in many

cases, be measured by observing

K second multiplicity index, e.g. the radioactive decay of the

(G,JPKN ) with both J & K positive integers greater than 1

residual nuclide.

511
' . " . • . . . • - • • ' •
nN where n is any integer. ( G , nN

)

indicates the sum over all

reaction cross sections in which

n neutrons are emitted.

NAI Nal(Tl) spectrometer

NEUT neutron(s)

NOX no cross-section data

P proton (see also XP)

PART parti cl e(s)

PHOT photon(s)

PI pion, usually written as PI+,

PI-, PIO to indicate charge

POL polarized or polarization

Q-SQUAR momentum transfer squared (q2)

RCL recoi

1

SN sum of neutron producing

reactions, a( y,SN)=a(Y,N)

+ cr(y,NP) + a(y,2N) + a(y,3N)

+ etc.

SPC photon or particle energy

spectrum

SPK spark chamber

SPL spallation

STAT statistical

SYM symetric, symmetry

T tri ton

TEL counter telescope

THR threshold for reaction or threshold detector, e.g.,

29si (n,p)29Al

.

TOF time-of-flight detector

REL

RLI

RLX

RSP

RLY

SCTD

SCD

SCI

SEP

rel ati ve

relative integrated crosssection data

relative cross-section data

reaction spectrometer

relative yield data

scattered

semiconductor (solid state)

detector

scintillator detector other than

Nal , e.g., Csl, KI, organic

(liquid or solid), stilbene, He

separation

SEP ISOTP separated isotope used

SIG SIGMA (cross section)

TRK tracks of particles or fragments observed in solid

materials (glass, mylar, etc.)

TRNS transition

UKN unknown

UNK

VIB vibrational

YIR PHOT virtual photon(s)

XN all neutrons, total neutron

yield, a(y,XN) - a(y,N) + 2a

(Y,2N) + 3a(y,3N) +a(y,NP) + etc.

XP' all protons, total proton yield

°(Y,XP) = a(y,p) + a(y,NP) + 2a(Y,2P) + etc.

XX reaction products defined in

XXX REMARKS

YLD yield

512
'

.

-
4PI a 4 tt geometry was used or a method like radioactivity or a total absorption measurement

products was determined.

The polarized particle is

indicated in REMARKS.

999 energy defined in REMARKS * or @ symbols used to indicate that

the units associated with the

$ indicates the measurement

involved beams or targets

that were either polarized

or aligned, or that the polarization of the reaction

numerals on one or both sides

of the symbol in a specific

column are not MeV. The units are defined in REMARKS.

I

I

1

I 513
.
U.S. DEPT. OF COMM. T. PUBLICATION OR

BIBLIOGRAPHIC DATA REPORT NO.

SHEET (See instructions)

4. TITLE AND SUBTITLE

Z. Performing Organ. Report NoJ 3. Publication Datr

Photonuclear Data-Abstract Sheets

1955-1982

Type of Report & Period Covered

P Document describes a computer program; SF-185. FIPS Software Summary, is attached. bibliography or literature Vurvey/mVntlonlTh'ere)

0 ^ m° St Slgn,ficant '"formation. If document includes a significant

Informational

m0“. classes of experimental photonuclear data leading to

of a qiven nucleus This°fift

etlC m

?

tnx e1 ®ment between the ground and excited states

covers 8g chemical eJmInr! f

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9 C

[I mI Ca e

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!i udy ° f . ectromagneti c interactions. The sheets are

mrio inf

element, target isotope, and by an assigned bibliographic reference

sourrp tvnp^nH

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n the of measurement, excitation energies studied,

Fnr s niff f

energies, detector type, and angular ranges covered in the measurement

ft ea^ftclldHLftd

* re ’ eVant fl9UreS 3" d tableS are m° Unted °n 3 Separate

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reactionsTM*^

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