Reference book not to

taken from the library,

N8S

Pubiications

Bibliography

on

National Bureau of Stancifr

Library, E-01 Mmin. Bldg.

OCT 17 1969

The Analyses of Optical Atomic Spectra

Section 4

^^La-^^Lu

^^Ac-^^Es

United States Department of Commerce

National Bureau of Standards

Special Publication 306-4

QC

100

.U57

NO. 306-4

1969
NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards ' was established by an act of Congress March 3, 1901. Today,

in addition to serving as the Nation's central measurement laboratory, the Bureau is a principal

focal point in the Federal Government for assuring maximum application of the physical and

engineering sciences to the advancement of technology in industry and commerce. To this end

the Bureau conducts research and provides central national services in four broad program

areas. These are: (1) basic measurements and standards, (2) materials measurements and

standards, (3) technological measurements and standards, and (4) transfer of technology.

The Bureau comprises the Institute for Basic Standards, the Institute for Materials Research, the

Institute for Applied Technology, the Center for Radiation Research, the Center for Computer

Sciences and Technology, and the Office for Information Programs.

THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United

States of a complete and consistent system of physical measurement; coordinates that system with

measurement systems of other nations; and furnishes essential services leading to accurate and

uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of an Office of Measurement Services and the following technical

divisions:Applied Mathematics—Electricity—Metrology—Mechanics—Heat—Atomic and Molecular Physics—Radio Physics -—^Radio Engineering -—Time and Frequency -—Astrophysics -—Cryogenics.-

THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research leading to improved methods of measurement standards, and data on the properties of well-characterized

materials needed by industry, commerce, educational institutions, and Government; develops,

produces, and distributes standard reference materials; relates the physical and chemical properties of materials to their behavior and their interaction with their environments; and provides

advisory and research services to other Government agencies. The Institute consists of an Office

of Standard Reference Materials and the following divisions: Analytical Chemistry—Polymers—Metallurgy—Inorganic Materials^—Physical Chemistry.

THE INSTITUTE FOR APPLIED TECHNOLOGY provides technical services to promote

the use of available technology and to facilitate technological innovation in industry and Government; cooperates with public and private organizations in the development of technological

standards, and test methodologies; and provides advisory and research services for Federal, state, and local government agencies. The Institute consists of the following technical divisions and

offices: Engineering Standards—Weights and Measures — Invention and Innovation — Vehicle

Systems Research—Product Evaluation—Building Research—Instrument Shops—Measurement Engineering—Electronic Technology—Technical Analysis.

THE CENTER FOR RADIATION RESEARCH engages in research, measurement, and application of radiation tjo the solution of Bureau mission problems and the problems of other agencies and institutions. The Center consists of the following divisions: Reactor Radiation—Linac Radiation—Nuclear Radiation—Applied Radiation.

THE CENTER FOR COMPUTER SCIENCES AND TECHNOLOGY conducts research and

provides technical services designed to aid Government agencies in the selection, acquisition,

and effective use of automatic data processing equipment; and serves as the principal focus

for the development of Federal standards for automatic data processing equipment, techniques,

and computer languages. The Center consists of the following offices and divisions: Information Processing Standards—Computer Information — Computer Services — Systems Development—Information Processing Technology.

THE OFFICE FOR INFORMATION PROGRAMS promotes optimum dissemination and

accessibility of scientific information generated within NBS and other agencies of the Federal

government; promotes the development of the National Standard Reference Data System and a system of information analysis centers dealing with the broader aspects of the National Measurement Syf tern, and provides appropriate services to ensure that the NBS staff has optimum accessibility to the scientific information of the world. The Office consists of the following

organizational units:

Office of Standard Reference Data—Clearinghouse for Federal Scientific and Technical

Information ' —Office of Technical Information and Publications—Library—Office of

Public Information—OflSce of International Relations.

' Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted ; mailing address Washington, D.C. 20234. Located at Boulder. Colorado 80302.

" Located at 6285 Port Royal Road, Springfield, Virginia 22151.
UNITED STATES DEPARTMENT OF COMMERCE

Maurice H. Stans, Secretary

NATIONAL BUREAU OF STANDARDS • A. V. Astin, Director

Bibliography

on

The Analyses of Optical Atomic Spectra

The Spectra of Lanthanum, Cerium, Praseodymium, Neodymium,

Promethium, Samarium, Europium, Gadolinium, Terbium,

Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium

Actinium, Thorium, Protactinium, Uranium, Neptunium,

Plutonium, Americium, Curium, Berkelium, Californium, and

Einsteinium

Charlotte E. Moore

Office of Standard Reference Data

National Bureau of Standards

Washington, D.C. 20234

National Bureau of Standards Special Publication 306-4

Nat. Bur. Stand. (U.S.), Spec. Publ. 306, Section 4, 55 pages (August 1969)

CODEN: XNBSA

Issued August 1969

For sale by the Superintendent of Documents, U.S. Government Printing Office

Washington, D.C. 20402 - Price 55 cents ,

Section 4
NATIONAL BUREAU OF STANDARDS

JftN 1 2 .
Preface

The program on "Atomic Energy Levels" (AEL) initiated at this Bureau in 1946 calls for

complete coverage of the Periodic Table. Three Volumes have been published as NBS Circular

467. The fourth volume deals with rare-earth spectra and is in course of preparation.

The references to individual spectra have been extended from the respective dates of

publication of the AEL Volumes, 1949, 1952, and 1958, in the first three corresponding Sections

of this bibliography.

The present and last Section contains references to the two groups of rare-earth spectra,

the lanthanides and the actinides. It is arranged to correspond to AEL Volume IV, but it differs from the first three Sections in that it does not continue references from a published

volume.

Upon the retirement of the author, Charlotte E. Moore, who has been directing this program, the responsibility for continuing it was assigned to William C. Martin, Chief of the

Spectroscopy Section of the Bureau, assisted by Lucy Hagan. He is in charge of the preparation

of AEL Volume IV. Publication is being delayed because many of the spectra to be included

are still under active investigation.

David R. Lide, Jr., Chief

Office of Standard Reference Data.

Ill
Abstract

There is a steady demand for information on rare-earth spectra. In an attempt to

satisfy this need the present bibliography has been prepared. It comprises Section 4, concludes

this publication, and completes the coverage of the Periodic Table. The references listed

have been selected on a general basis as those needed for the preparation of Volume 4 of

"Atomic Energy Levels."

Since rare-earth structure is revealed in the neighboring spectra, ^'La and *'Ac, the

references for these elements are repeated in the present Section, which contains the two

groups of elements:

"La to "Lu and ^^Ac to '"Es A selected list of general literature references is also included.

Nearly all of the quoted references have been checked from the original papers.

Key words: Anab'ses of rare-earth spectra; atomic spectra,

La through Lu, Ac through Es;

references to atomic spectra; rare-earth spectra;

spectra, atomic: elements, spectra of rare-earths.

Library of Congress Catalog Card Number 68-62107

IV
Index to Spectra

Element z Spectrum Page Element z Spectrum Page

General References 1 Gadolinium 64 Gd I 17

Gd II 18

Lanthanum 57 La I 3 Gd III 18

La II 3 Gd IV 19

La III 3

Terbium 65 Tb I 19

Cerium 58 Ce I 4 Tb II 20

Ce II 4 Tb IV 20

Ce III 5

Ce IV 6 Dysprosium 66 Dy I 20

Dy II 21

Praseodymium 59 Pr I 6 Dy IV 22

Pr II 7

Pr III 7 Holmium 67 Hoi 22

Pr IV 8 Ho II 22

Pr V 9 Ho III 28

Ho IV 23

Neodymium 60 Nd I 9

Nd II 10 Erbium 68 Er I 23

Nd III 11 Er II 25

Nd IV 11 Er III 25

Er IV 26

Promethium 61 Pm I 11

Pm II 12 Thulium 69 Tm I 26

Pm IV 12 Tm II 28

Tm III 28

Samarium 62 Sm I 13 Tm IV 28

Sm II 14

Sm III 14 Ytterbium 70 Yb I 29

Sm IV 14 Yb II 30

Yb III 31

Europium 63 Eu I 15 Yb IV 31

Eu II 16

Eu III 16 Lutetium 71 Lu I 31

Eu IV 17 Lu II 32

Lu III 33

V
Index to Spectra—Continued

Element Z Spectrum Page

Actinium 89 Ac I 33

Ac II 33

xi.^ Af» TTT Ill 33

Ap TV 33

Thorium 90 Th I 34

Th II 35

Th III 36

ThX 11 TV1 V 37

Protactinium 91 Pa I 37

Pa II 37

Pa III 37

Uranium 92 Ui 38

Uii 39

U IV 41

U VI 41

Neptunium 93 Np I 41

Element Z Spectrum Page

Plutonium 94 Pu I 41

X.PnLi ITXX 4.3 PnX U. TV1 V

Americium 95 Am I 44

Am TT Am III 45

Am IV 46

Curium 96 Cm I 46

Cm II 46

C'.vn V7111 TV1 V 47

Berkelium 97 Bki 47

Bk II 47

Californium 98 Cf I 47

Cf IV 47

Einsteinium 99 Es I 48

Es II 48

VI
Bibliography

on

The Analyses of Optical Atomic Spectra

Charlotte E. Moore

The present bibliography concludes the series

of which three Sections have been published;

Section 1 in September 1968, Section 2 in

February 1969, and Section 3 in May 1969. Each

of these three Sections covers the same elements

as are contained in the respective three Volumes

of "Atomic Energy Levels" [1]:^

Section 1 ' H through V

Section 2 ^4 through Nb

Mo through " La

Section 3 ] Hf through ^'Ac

The earlier references to the spectra of these

elements are contained in "Atomic Energy

Levels," and the various Sections of this publication provide references on individual spectra

from the respective dates of publication of the

three Volumes to the present.

The fourth Volume of the Atomic Energy

Levels Series will contain the rare-earth elements,

and thus complete the coverage of the Periodic

Table. Many of the very complex spectra to be

included are still under active investigation.

Pending further progress toward the preparation

of this Volume, the present bibliography has been

prepared with the hope that it will satisfy to

some extent the continuing demand for information on rare-earth spectra.

As in the preceding Sections the content of the

individual papers is briefly described by key

letters or words. The letters have the following

meanings:

C L Classified lines

E D Energy level diagram

G D Grotrian diagram

I P Ionization potential

I S Isotope shift

T Terms (and/or energy levels) W L Wavelength

Z E Zeeman effect

[ ] Forbidden transitions

hfs Hyperfine structure

Figures in brackets indicate the literature references on page VIII.

If the paper is an Abstract or a Letter to the

Editor, the respective letters "A" and "L" are entered in parentheses before the date of the

reference.

The author has published partial reference

lists for rare-earth spectra, most of which are embodied in the present Section [2, 3, 4]. The

list of references has been greatly extended, but

is selective. In general, an effort has been made

to include all references to date that are needed

to compile tables of atomic energy levels, classified

lines and Zeeman data for rare-earth spectra [5].

The selection is essentially similar to that of the

former Sections, but differs in that it is not a

continuation from those included in a Volume of

"Atomic Energy Levels" already published.

A number of criteria contribute to the interpretation of these complex spectra. In preparing

the bibliography the writer has attempted to

recognize the importance of references to theoretical papers and to work on hyperfine structure,

isotope shift and other related subjects. Here

the listing is not complete, but it is hoped that

enough is given to serve as a guide to further

references in the various fields.

Many rare-earth spectra are being observed in

crystals and solutions, as absorption or fluo- rescence spectra. A number of lists of energy

levels derived from these spectra have been

published for individual spectra. This is a separate

subject in itself, however; it is not covered in the

present work, which is limited essentially to work

on "the analyses of optical spectra."

The characteristic that distinguishes rare-earth

spectra is the presence of /-electrons in the outer

structure of the atoms, namely 4/-electrons for

the Ianthanon group ^*Ce to '''Lu, and 5/-electrons

for the actinon group ^"Th to ^"^Lw. The elements

preceding each of these groups, "La and *^Ac,

begin to reveal in their spectra some rare-earth

characteristics, and thus provide a useful introduction to the study of rare-earth spectra. Consequently, the references to spectra of these two

elements as given in Section 3 are repeated in

Section 4.

The references are arranged similarly to those

in the earlier Sections. They are with few exceptions, arranged in alphabetical order by author

and by year for a given spectrum, starting with

the earlier papers. A list of general references

precedes the main Bibliography.

vn
Nearly all of the references quoted here have

been verified by the author. Only a very few

which were not available have been copied from

abstracts found in the literature.

The author appreciates the generosity of all who have contributed material for inclusion here.

A number of colleagues have made special effort

to furnish current references and reprints. W. C.

Martin and his staff in the Spectroscopy Section

have carefully examined the manuscript and

given her the benefit of their experience with

references to rare-earth spectra.

This Special Publication could not have been

prepared without the continuing and efficient

cooperation of Elizabeth L. Tate and her competent staff in the splendid Library of the National

Bureau of Standards. Their help has been invaluable. Similarly, the preparation of the press

copy of the manuscript with extreme care has

been carried out by Isabel D. Murray. The author

is most grateful for this splendid assistance.

References

[1] C. E. Moore, Circ. Nat. Bur. Std. 467, Vol. I, 309 pp.

(1949); Vol. n, 227 pp. (1952) ; Vol. Ill, 245 pp. (1958).

[2] C. E. Moore, Circ. Nat. Bur. Std. 467, Vol. Ill, xxxiii

(1958).

[3] C. E. Moore, Applied Optics 3, 665 to 674 (1963).

[4] W. F. Meggers and C. E. Moore, Trans. Joint Comm.

for Spectroscopy, J. Opt. Soc. Am. 47, 1035 to 1041

(1957); 50, 405 to 407 (1960); 52, 583 to 584 (1962);

53, 885 to 889 (1963).

[5] C. E. Moore, Reprinting of 1945 Princeton Multiplet

Table, Nat Bur. Std. Tech. Note 36, PB151395,

245 pp. (1959).

Washington, D.C, March 10, 1969.

VIII
General References

L. Rolla and G. Piccardi, Phil. Mag. [7] 7, 286 to 301 (1929). Experimental I P First Spectra Lanthanides

W. F. Meggers, Rev. Mod. Phys. lU, 96 to 103 (19U2). Review "Atomic

Spectra of Rare-Earth Elements"

PH. Schuurmans, Physica 12, 589 to 59U (19U6). Low Configurations in

Rare-Earth Spectra

L. F. H. Bovey, Nature 177 , 737 to 738 (1956). Argonne Symposium

Review Atomic Spectroscopy

I. N. Bakulina a N. I. lonov, Zh. Exs. Teor. Fiz., U.S.S.R. 36, 1001 to

1005 (1959). Experimental IP: U i

N. I, lonov a M. A. Mittsev, Zh. Exs. Teor. Fiz., U.S.S.R. 38, 1350 to

1351 (i960). Experimental I P: Pr i, Nd i

G. Racah, J. Opt. Soc. Am. 50, U08 to Ull (I96O). Notation

A. Y. Gabezas, I. Lindgren and R. Marrus, Phys, Rev. 122 , 1796 to I8OI

(1961). Atomic Beam Investigations, Z E Ground States

J. B. Gruber and J. G. Conway, J. Chem. Phys. 3h, 632 to 638 (I96I).

Theory f^ Configurations Rare-Earth Ions

N. I. lonov a M. A. Mittsev, Zh. Exs. Teor. Fiz., U.S.S.R. UO, 7iil to

7U2 (1961). Experimental IP: Er i , Tb i , Ce i , Th i

B. R. Judd and I. Lindgren, Phys. Rev. 122, 1802 to 1812 (I96I). Theory

Z E in Ground Multiplets

J. Sugar, J. Research Nat. Bur. Std. 66a, 321 to 32U (1962). Selfreversed Lines

B. G. INyboume, J. Chem. Phys. 36, 2295 to 2300, 2301 to 2311 (1962).

Theory f^ Configurations, Trivalent Rare-Earth Ions

J. G. Conway and B. G. "Wyboume, Phys. Rev. I30, 2325 to 2332 (1963).

Theory, Low-Lying Energy Levels of Lanthanide Atoms

C. E. Moore, Appl. Opt. 2, 665 to 67U (1963). Bibliography

V. G. Mossotti and V. A. Fassel, Spectrochim. Acta 20, 1117 to 112 7

(I96U). Absorption Spectra Lanthanide Elements

J. G. Conway, J. Chem. Phys. Ul, 90U to 905 (L) (196Ii). Theory Energy

Levels in U** Actinides

650-361 0—69 2 ^
General References —Continued

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

Singly-Ionized Rare-Earths

B. G. Wyboume, "Spectroscopic Properties of the Rare Earths", 236 pp.,

Interscience Publishers, New York (1965).

J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 to 119U (1966). I P

Neutral Rare-Earths

S. D. Dey and S. B. Karmohapatro , Proc. 1st Intern, Conf . Spectr.

(Bombay) 1, 38 to Ul (1967). Experimental I P Rare-Earth Spectra:

Pr I , Gd I , Dy I , Ho I , Er I

G. H. Dieke, "Optical Properties of Ions in Crystals" 552 pp.,

H. M. Crosswhite and H. W. Moos, Editors, Interscience Publishers,

New York (1967).

Z. B. Goldschraidt, Dept. of Theoretical Physics, The Hebrew University,

Jerusalem, Israel, Properties and Methods of Interpretation of RareEarth Spectra, 39 pp- ( 1967); "Spectroscopic and Group Theoretical

Methods in Physics", F. Bloch etc.. Editors, pp. hll. to 1^57 (John Vfiley

and Sons, New York, 1968).

J. Blaise und A. Steudel, Zeit. Phys. 209 , 311 to 328 (1968). I S

F. Bloch, S. G. Cohen, A. De-Shalit, S. Sambursky, I. Talmi, Editors,

"Spectroscopic and Group Theoretical Methods in Physics", Racah

Memorial Volume, U62 pp. (John Wiley and Sons, Inc., New York; North

Holland Publishing Company, Amsterdam, 1968). Theory

W. T. Carnall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, Ulil2 to

Ui455 (1968). Energy Levels in Trivalent Lanthanide Aquo Ions, Theory

B. R. Judd, H. M. Crosswhite and H. Crosswhite, Phys. Rev. I69, 130 to

138 (1966). Theory, " Intra-Atomic Magnetic Interactions for

f Electrons". Ce m , Pr iv, Pm i , Gd iv

2
LANTHANUM (Z = 57)

La I

C. E. Moore and P. W« Merrill, Appendix A: Partial Grotrian Diagrams

(19^6); Nat. Std. Ref. Data Series, Nat. Bur. Std, NSRDS-NBS 23, U3

(1968). C L

R. A. Fisher, W. C. Knopf, Jr., F. E. Kinney, Astroph. J. 130, 683 to

687 (1959). W L, C L Infrared

K. Murakawa, Jo Phys. Soc. Japan l6, 2533 to 2537 (1961). hfs

V. G. Mossotti and V. A. Fassel, Spectrochim. Acta 20, 117 to 127 (196U).

C L Absorption Lines

W. R. S. Garton and M. Wilson, Astroph. J. Ili5, 333 to 336 (1966). I P,

E D, Series Autoionization

N. Spector, unpublished material (June 1966), T

J. Stein, J. Opt. Soc. Am. 57, 333 to 335 (1967). T, Z E Theory

W. J, Ghilds and L. So Goodman, Bull, Am. Phys, Soc. [2] 13, 20, 891 to

892 (1968). hfs, Z B

A. Giacchetti and M, Wilson, J. Opt. Soc. Am. 58, 7U0 (A) (1968).

Analysis in progress

La II

C. E. Moore and P. W. Merrill, Appendix A: Partial Grotrian Diagrams

(1956); Nat. Std. Ref. Data Series, Nat. Bur. Std. NSRDS-NBS 23, Ul

(1968). C L

K. Murakawa, Phys. Rev. nO, 393 to 396 (1958). hfs

J. Sugar and J. Reader, J. Opt, Soc. Am. 55, 1286 to 1290 (1965). I P

La III

J. Sugar and V. Kaufman, J, Opt, Soc. Am. 55, 1283 to 1285 (1965). I P,

T, C L

H. Odabasi, J. Opt. Soc. Am. 57, lU59 to lU63 (1967). I P, T, C L, G D,

V L

3
CERIUM (Z - 58)

Ce I

A. S. King, Astroph. J. 68, 19h to 219 (1928). Temperature Classification

F. W. Paul, Phys. Rev. U9, l56 to l62 (1936). W L Absorption

H. J. van de Vliet, Dissertation, Univ. Amsterdam, p. 69 (N. V. NoordHollandsche Uitgevers Maatschappi j , Amsterdam) (1939). Z E

K. F. Smith and I. J. Spalding, Proc. Roy. Soc. London A265, 133 to lIiO

(1961). Z E Atomic Beam

W. C. Martin, J. Opt. Soc. Am. 53, lOU? to 10^0 (1963). T, Z E

R.-J. Champeau, S. Gerstenkom et G. Gluck, Compt. Rend. 262B , lli29 to

1U31 (1966). I S

S, Gerstenkom, unpublished material (I966). Near Infrared Observations

0.8/6 to 2.5>

J. Reader and J. Sugar, J, Opt. Soc. Am. %y II89 to 119 ii (1966). I P

Z. B. Goldschmidt and D. Salomon, Program Atomic Sp. Symposium, Nat. Bur.

Std., p. 77 (A) (September 1967). Theory

W. C. Martin, Program Atomic Sp. Symposium, Nat. Bur. Std., p. 78 (A)

(September 1967). T, Configurations

R. J, Champeau et S. Gerstenkom, Phys. Lett. (Amsterdam) 26a , 33U to

335 (1968). I S

W. C. Martin, Analysis in progress (I969).

W. C. Martin, C. H. Corliss and M. Wilson, unpublished material (I969).

W L

Ce II

A. S. King, Astroph. J. 68, 19i| to 219 (1928). Temperature Classification

W. E. Albertson and G. R. Harrison, Phys. Rev. 1209 to 12l5 (1937).

T, C L

G. R. Harrison and W. E. Albertson, Phys. Rev. 53, 9U0 to 9hX (A) (1938).

Analysis extended

h
CERIUM

Ce II - Continued

F. M. Gerasimov, Zh. Exs. Teor. Fiz., U.S.S.R. 9, 1036 to 10U8 (1939).

Z E, C L

H. J. van de Vliet, Dissertation, Univ. Amsterdam, pp. h3 to 68

(N. V. Noord-Hollandsche Uitgevers Maatschappi j , Amsterdam) (1939) . Z E

G. R. Harrison, W. E. Albertson and N. F. Hosford, J. Opt. Soc. Am. 31,

li39 to hhQ (I9I4I). T, C L, Z E "~

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. 3h to 36 (I9U6);

Physica 12, 589 to 59U (19ii6). T, C L, Z E, hfs

W. E. Albertson, unpublished material (19 U9) (1955). T, C L

P. Brix und H. Frank, Zeit. Phys. 127, 289 to 296 (1950). I S

K. Murakawa and J. S. Ross, Phys. Rev. 83, 1272 to 1273 (L) (1951). I S

H. Arroe, Phys. Rev. 93, 9h (195ii). IS

G. Racah, Bull. Research Council Israel 5a, 78 (1955). T

L. A. Korostyleva, Opt. i Spektr. 3, 536 to Shh (1957). I S

G. Racah, unpublished material (1959). T, C L

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

Z, B. Goldschmidt, On program at The Hebrew University, Jerusalem (I969).

Analysis being extended. Theory

W. C. Martin and C. H. Corliss, unpublished material (I969). W L

Ce III

A. S. King and R. B. King, Astroph. J. 75, hO to U5 (1932). W L

T. L. de Bruin, J. N. Lier and H. J. van de Vliet, Proc. Kon. Nederl.

Akad. Wetensch. hO, 33h to 339 (1937). Z E, T, C L

H. N. Russell, R. B. King and R. J. Lang, Phjrs. Rev. U56 to li66

(1937). I P, T, C L, Z E

F. M. Gerasimov, Zh. Exs. Teor. Fiz., U.S.S.R. 9, 1036 to 10i48 (1939).

Z E
CERIUM

Ce III - Continued

H. J. van de Vliet, Dissertation, Univ. Amsterdam, pp. 30 to hX

(N. V. Noord-Hollandsche Uitgevers Maatschappij , Amsterdam) (1939). Z E

N. Spector, J. Opt. Soc. Am, 55, U92 to 501 (1965). Theory

hf nl Configurations

J. Sugar, J. Opt. Soc. Am. 55, 33 to 58 (1965). I P, T, C L, E D

Z. B. Goldschmidt, Colloq. Intern. Centre Nat. Rech. Sci. (Paris)

No. 16U, 365 to 38U (1967). Theory

B. R. Judd, H. M. Crosswhite and H. Crosswhite, Phys. Rev. I69, 130 to

138 (1968). Theory

Ce IV

A. S. King and R. B. King, Astroph. J. 75, hO to U5 (1932). W L

R. J. Lang, Can. J. Rese^ch U] 13, 1 to U (1935)j [A_] II4., 127 to 130

(1936). I P, T, C L

R. J. Lang, Phys. Rev. h9, 552 (L) (1936). I P, T, C L

H. J. van de Vliet, Dissertation, Univ. Amsterdam, pp. 27 to 29

(N. V. Noord-Hollandsche Uitgevers Maatschappij , Amsterdam) (1939). Z E

J, Sugar and V. Kaufman, unpublished observations (I969).

Vac. Ultraviolet

PRASEODYMIUM (Z = 59)

Pr I

A. S. King, Astroph. J. 68, 219 to 2U5 (1928). Temperature Classification

H. Lew, Phys. Rev. 89, 530 (L) (1953). hfs

V. B. Belyanin, Opt. i Spektr. U, 261^ to 266 (1958). hfs

K. Murakawa, J. Phys. Soc. Japan l5, 2306 to 2309 (I960), hfs

A. Y. Cabezas, I. P. A. Lindgren, R. Marrus and W. A. Nierenberg, Phys.

Rev. 126, lOOU to 1008 (1962). hfs, Z E

6
PRASEODYMIUM

Pr I - Continued

J. G. Conway and B. G. Wybourne, Phys. Rev. I30, 2325 to 2332 (I963).

Theory

R. Zalubas and M. Wilson, J, Research Nat, Bur. Std. 69

A

, S? to 70

(1965). W L

J. Reader and J. Sugar, J. Opt. Soc. Am, $6, II89 to 119U (1966). I P

R. Zalubas, unpublished material (I969). T, C L, Z E, W L

Pr II

A. S. King, Astroph, J. 68, 219 to 21^5 (1928). Temperature Classification

N, Rosen, G. R. Harrison and J. R. McNally, Jr., Phys. Rev. 60, 722 to

730 (19iil). T, C L, Z E, hfs

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. 36 to 39 (N. V. NoordHollandsche Uitgevers Maatschappij, Amsterdam) (19U6). T, Z E, hfs

P. Brix, Phys. Rev. 89, 12U5 to 12U6 (1953). hfs

G. Racah, unpublished material (1956). Configurations

V. B. Belyanin, Opt. i Spektr. U, 26h to 266 (1958). hfs, C L

K, Murakawa, j. Phys, Soc, Japan l5, 2306 to 2309 (I960), hfs

J. Sugar and J. Reader, J. Opt, Soc. Am. 55, 1286 to 1290 (1965). I P

R. Zalubas, unpublished material (1968). W L, Z E

Pr III

J. Sugar, Johns Hopkins Spectr. Report No. 22, 87 pp. (I96I). I P, T,

C L, E D, W L

J. Sugar, J, Opt, Soc, Am. 53, 83I to 839 (1963). I P, T, C L, E D

N. Specter, J. Opt, Soc, Am. 5U, 1359 to 1362 (196ii). Energy Levels

Theory

7
PRASEODYMIUM

Pr HI - Continued

R. R. Trees, J. Opt. Soc. Am. 6$1 to 6^7 (196U). Energy Levels Z E

Theory

K. Rajnak, J. Opt. Soc. Am. 55,126 to 132 (1965). Theory Uf3 Configuration

J. Reader and J. Sugar, Phys. Rev. 13?, B78U to B789 (1965). hfs, C L

H. Crosswhite, H. M. Crosswhite and B. R. Judd, Phys. Rev. 17U, 89 to 9h

(1968). Theory

Z. Be Goldschmidt, A. Pasternak and Z. H. Goldschmidt, unpublished

material (1968). Theory Uf3 Configuration

B. R. Judd, J. Opt. Soc. Am. 58, 1311 to 1312 (L) (1968). E D, Theory

J. Sugar, J, Research Nat. Bur. Std,7.3A,in press (1969). I P, T, C L, W L,

E D, Theory

Pr IV

E. Trefftz, Zeit. Phys. 130, 56l to 56U (195l). Theory

W. A. Runciman and B. G. Wyboume, J. Chem. Phys. 31> 11^9 to 11 50 (L)

(1959). Theory

C. J. Lenander, Phys. Rev. 130, 1033 to 1035 (1963). Theory

E. Y. Wong, J. Chem. Phys. 38, 976 to 978 (1963). Theory

H. M. Crosswhite, G. H. Dieke and W. J. Carter, J. Chem. Phys. U3, 20U7

to 205I4 (1965). T, C L, hfs

J. Sugar, J. Opt. Soc. Am. 55, 1058 to IO6I (1965). T, C L, Theory

J. Sugar, Phys. Rev. Lett. lU, 731 to 732 (1965). T

Z. H. Goldschmidt, Program Atomic Sp. Symposium, Nat. Bur. Std. , p. 32

(A) (September 1967). Theory Uf^ Configuration

W. T. Carnall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UU2U to

UUI42 (1968). T Free Ion Spectra, Theory

B. R. Judd, H. M. Crosswhite and H. Crosswhite, Phys. Rev. I69, I30 to

138 (1968). Theory

J. Sugar, Analysis being extended (I969).

8
PRASEODYMIUM

Pr V

V. Kaufman and J. Sugar, J. Research Nat. Bur. Std. 7lA , 583 to 585

(1967). I P, T, C L, hfs

NEODmUM (Z - 60)

Nd I

A. S. King, Astroph. Jo 78, 9 to ii5 (1933). Temperature Classification

F. W. Paul, Phys. Rev. U9, l56 to l62 (1936). W L Absorption

H. J. van de Vliet, Dissertation, Univ. Amsterdam, pp. 70 to 80

(N. V. Noord-Hollandsche Uitgevers Maatschappij , Amsterdan) (1939) . Z E

P. F. A. Klinkenberg, Physica 12, 33 to U8 (19U6). T, W L, Z E

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. 39 to li8 (N. V. NoordHollandsche Uitgevers Maatschappij , Amsterdam) (19U6). T, C L, Z E

PH. Schuurmans, Physica 11, I4I9 to U25 (19U6). T

K. Murakawa, Phys. Rev. 96, l^h3 to l5U6 (195U). hfs, IS

G. Noldeke und A. Steudel, Zeit. Phys. 137, 632 to 637 (195U). I S, hfs

P. F. A. Klinkenberg, Dissertation, Univ. Amsterdam (1955). T, C L, Z E

F. A. Korolev and Yu. I. Osipov, Doklady Akad. Nauk SSSR 110, 365 to 367

(1956). I S

J. Blaise, Ann. de Phys. [I3] 3, 1062 to 1067 (1958). I S, G L

K. F. Smith and I. J. Spalding, Proc, Roy. Soc. London A265, 133 to lUO

(1961). Z E Atomic Beam

G. E. M. A. Hassan, Dissertation, Univ. Amsterdam, l75 pp. (1962). I P?,

T, C L, Z E, I S, W L

J. G. Conway and B. G. l^^bourne, Phys. Rev. I30, 2325 to 2332 (1963).

Theory

G.E. M. A. Hassan, Physica 29, 1119 to 1127 (1963). I P?, T, C L, 2 E,

E D

9

350^361 0—69^ ,3
NEODYMIUM

Nd I - Continued

G. E. M. A, Hassan and P. F. A. Klinkenberg, Physica 29, 1133 to ll^U

(1963). C L, Z E, IS

I. J. Spalding, Proc. Phys. Soc. (London) 8I, 1% to l62 (I963). hfs

S. Held, Israel Atomic Energy Commission Report lA-92 7, 3? pp.

(June 196ii). W L

S. Gerstenkom, J.-M. Heltert et R. Chabbal, Compt, Rend, 26l , 1232 to

1235 (1965). IS

G. Gluck, Ann. de Phys. [13] 10, 673 to 696 (1965). I S

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

0,8/t to 2.5/6

J. Reader and J. Sugar, J. Opt. Soc. Am. II89 to II9U (1966). I P

J. E. Hansen, A. Steudel und H. Walther, Zeit. Phys. 203, 296 to 329

(1967). IS

J.-F. y/yart, These, Univ. Paris (Orsay), 105 pp. (1968). T, C L, Z E,

W L, E D, IS, Theory

Nd II

A. S. King, Astroph. J. 78, 9 to (1933). Temperature Classification

H. J. van de Vliet, Dissertation, Univ. Amsterdam, pp. 70 to 80

(N. V. Noord-Hollands che Uitgevers Maatschappij , Amsterdam) (1939). Z E

W. E. Albertson, G. R. Harrison and J. R. McNally, Jr., Phys. Rev. 6I,

167 to 17U (19U2). T, C L, Z E

P. F. A. Klinkenberg, Physica 12, 33 to U8 (19U6). W L, Z E

PH. Schuurmans, Physica 11, Ul9 to U25 (19U6). T, C L, Z K

K. Murakawa, Phys. Rev. 96, l5U3 to l^hS (195U). hfs

G. Noldeke, Zeit. Phys. lU3, 27U to 28J4 (1955). IS, hfs

J. Blaise, Ann. de Phys. [13] 3, 1062 to 1067 (1958). I S, C L

10
NEODYMIUM

Nd II - Continued

G. E. M. A. Hassan, Dissertation, Univ. Amsterdam, 175 pp. (1962), T,

C L, E D, I S, W L

S. Held, Israel Atomic Energy Commission Report lA-927, 37 pp.

(June I96U). W L

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1?86 to 1290 (1965). I P

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

J.-F. Wyart, These, Univ. Paris (Orsay), 105 pp. (1968). T, C L, W L,

Z E, Theory

Nd III

H. M. Crosswhite, Private communication (1965). Unpublished W L

Nd IV

B. G. Wybourne, J. Chem. Phys. 32, 639 to 6^2 (I96O); 3U, 279 to 281

(I96I). Theory

H. Crosswhite, H. M. Crosswhite and B. R. Judd, Phys. Rev. ITU, 89 to 9h

(1968). Theory

A. Rajnak, J. Chem. Phys. U3, 8U7 to 855 (1965). Theory

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UU2U to

UUU2 (1968). T Free Ion Spectra, Theory

M. Synek and L. Corsiglia, J. Chem. Phys. U8, 3121 to 3125 (1968). Theory

PROMETHIUE (Z = 6I)

Pm I

W. F. Meggers, B. F. Scribner and W. R. Bozman, J. Research Nato Bur.

Std. U6, 85 to 98, RP2179 (1951). W L

P. F. A. Klinkenberg and S. Tomkins, Physica 26, 103 to llU(1960). hfs

11
PROMETHIUM

Pm I — Continued

A. Y. Cabezas, I. Lindgren and R, Marrus, Phys. Rev. 1?2, 1796 to l&Ol

(1961). Z E Atomic Beam

B. Budick and R. Marrus, Phys. Rev. 132, 723 to 728 (1963). hfs, Z E

J. G. Conway and B. G. Wyboume, Phys. Rev. I30, 232,^ to 2332 (I963).

Theory

J. Reader and J. Sugar, J. Opt. Soc. Am. II69 to 119U (I966). I P

J. Reader and S. P. Davis, J. Research Mat. Bur. Std. 7lA , ^87 to ^99

(1967). T, C L, Z E

B. R. Judd, H. M. Crosswhite and H. Crosswhite, Phys. Rev. I69, I30 to

138 (1968). Theory

Pm II

W. F. Meggers, B. F. Scribner and W. R. Bozman, J. Research Nat, Bur.

Std. U6, 85 to 98, RP2179 (19^1). W L

P. F. A. Klinkenberg and F. S. Tomkins, physica 26, 103 to llij (I960),

hfs

J. Reader and S. P. Davis, J. Opt. Soc. Am. |3, U31 to U35 (1963). hfs

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

J. Reader, Phys. Rev. lUl, 1123 to 1128 (I966). hfs

J. Reader and S. P. Davis, Program Atomic Sp. Symposium, Nat, Bur. Std.,

p. 79 (A) (1967). T

J. Reader and S. P. Davis, unpublished analysis (I969).

Pm IV

M. H. Crozier and Vf. A. Runciman, J. Chem« Phys. 35, 1392 to lU09 (I96I).

Theory, Z E

S. Hiifner, Zeit, Phys. l65, 39? to UOl (I96I). Theory

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys. h9, hhX? to

UU;2 (1968). T Free Ion Spectra, Theory

12
SAMARIUM (Z - 62)

Sm I

W. Albertson, Phys. Rev. U7, 370 to 376 (1935)5 52, 6hh to 6ii7 (1937).

I P, T, C L

A. S. King, Astroph. J. 82, IhO to 191 (1935). Temperature Classification

F. W. Paul, Phys. Rev. U9, l56 to l62 (1936). W L Absorption

P. Brix, Zeit. Phys. 126, I43I to U39 (19U9). T, C L, IS

K. Murakawa, Phys. Rev. 93, 1232 to 1235 (195i|). hfs

F. M. J. Pichanick and G. K. Woodgate, Proc. Roy, Soc. London A263, 89 to

100 (1961). Z E, Ground Term

K. F« Smith and I. J. Spalding, I*roc. Roy, Soc. London A265, 133 to lUO

(1961). Z E Atomic Beam

A. R. Striganov, V. A. Katulin and V. V, Eliseev, Opt. i Spektr. 12, l7l

to 177 (1962). I S, C L

J. G. Conway and B. G. ^bourne, Phys, Rev, 130, 2325 to 2332 (I963).

Theory

S. Held, Israel Atomic Energy Commission Report IA-8UI, h6 to U7 (I963).

W L

W, H. King, J. Opt. Soc. Am. 53, 638 to 639 (L) (1963). I S

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

OoQ/L to 2,5/"-

K. Heileg, G. Sauthoff und A. Steudel, Zeit. Phys. I96, 39 to U3 (1966).

Z E

G. Racah and U. Ganiel, J. Opt. Soc. Am. 56, 893 to 895 (1966). Theory

J. Reader and J. Sugar, J. Opt. Soc. Am, 56, 1189 to 119ii (1966). I P

• A. earlier. These (Orsay) (1967). Theory, T, C L

J. E. Hansen, A. Steudel und H. Walther, Zeit. Phys. 203, 296 to 329

(1967) . I S

A. earlier, J. Blaise et M.-G. Schweighofer, J. de Phys. 29, 729 to 738

(1968) . T, E D, Z E, Theory

J. Blaise, C. Morillon, M,-G. Schweighofer et J.-L. Verges, Spectrochim.

Acta, in press (I969). Snission Spectra T, C L

13_
SAMARIUM

Sm II

A. S. King, Astroph. J. 82, lUO to 191 (193^). Temperature Classification

W. Albertson, Astroph. J. 8U, 26 to 72 (1936). I P, T, C L, Z E

K. Murakawa, Phys. Rev. 93, 1232 to 123^ (195ii). hfs

S. Held, Israel Atomic Energy Commission Report 1A-8U1, U6 to U7 (I963).

W L

A. R. Striganov and N. A. Kulazhenkova, Opt. i Spektr. I6, 936 to 9U0

(I96U). I S, C L

H. M. Crosswhite, unpublished material (1965). W L

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

A. earlier. These (Orsay) (1967). Theory

J. Blaise, C. Morillon, M.-G. Schweighofer et J.-L. Verges, Opt. Conf.

Warsaw (June 1968); Spectrochim. Acta, in press (I968). T, C L, IS,

Z E, Observations 0.8/^ to 2.5/^

Sm III

G. S. Ofelt, J. Chem. Phys. 38, 2l7l to 2l80 (1963). Theory

l4f6 Configuration, T, Z E

H. M. Crosswhite, unpublished material (1965). W L

A. Dupont, J» Opt. Soc. Am. 57, 867 to 869 (1967). T, E D

Sm IV

B. R. Judd, Proc. Phys. Soc. (London) A69, l57 to l6h (1956). Theory

Ground Term

B. G. IWybourne, J. Chem. Phys, 36, 2301 to 2311 (1962). Theory, f'^ Terms

W. T. Carnall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UUl2 to

khh2 (1968). T Free Ion Spectra, Theory
EUROPIUM (Z = 63)

Eu I

A. S, King, Astroph. J. 72, 221 to 2^5 (1930). Temperature Classification,

hfs

H. N. Russell and A. S. King, Phys. Rev. U6, 1023 to 102U {19 3h), I P,

T, C L

A. S. King, Astroph. J. 89, 377 to ii30 (1939). Temperature Classification

H. N. Russell and A. S. King, Astroph. J. 90, 1?5 to 203 (1939). I P,

T, C L

H. N. Russell, W. Albertson and D. N. Davis, Phys. Rev. 60, 6^3 (19Ul).

C L, Z E

P. Brix, Zeit. Phys. 132, 579 to 607 (19^2). I S

F. M. Pichanick, P. G. H. Sandars and G. K. Woodgate, Proc. Roy. Soc.

London A257, 2 77 to 282 (I960), hfs

P. G. H. Sandars and G. K. Woodgate, Proc. Roy. Soc. London A257, 269 to

276 (I960), hfs, Z E

K. Krebs und R. INinkler, Ann. der Phys. [7] 7, 77 to 83 (196l). hfs

F. M. J. Pichanick and G. K. Woodgate, Proc. Roy. Soc. London A263 , 89 to

100 (1961). Z E, Ground Term

J. G. Conway and B. G. Wyboume, Phys. Rev. I30, 2325 to 2332 (1963).

Theory

S. Held, Israel Atomic Energy Commission Report IA-8UI, UO to U5 (I963).

W L

Y. Bordarier, B. R. Judd and M. Klapisch, Proc. Roy. Soc. London A289 , 81 to 96 (1965). hfs Theory

W. Muller, A. Steudel und H. Walther, Zeit. Phys. 183, 303 to 320 (1965).

hfs

G. Smith and B. G. Ytyboume, J. Opt. Soc. Am. 55, 121 to 125 (1965). T,

Z E Theory

R. Winkler, Zeit. Phys. I8U, U33 to U50 (1965). hfs

J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 to 119 ii (1966). I P

P. Bagus et J. Picart, Compt. Rend. 266B , 8U2 to 8iiU (1968). hfs

15
EUROPIUM

Eu II

A. S. King, Astroph. J. 72, 221 to 255 (1930). Temperature Classification,

hfs

W. Albertson, Phys. Rev. ij5, h99 to 500 (L) (193U). T, C L

A. S. King, Astroph. J. 89, 377 to h30 (1939). Temperature Classification

H. N. Russell, W. Albertson and D. N, Davis, Phys. Rev. 60, 6Ul to 656

(19i|l). I P, T, C L, Z E ~

P. Brix, Zeit. Phys. 132, 579 to 607 (1952). I S

K. Krebs und R. Winkler, Zeit. Phys. l60, 320 to 332 (I960), hfs, IS

S. Held, Israel Atomic Energy Commission Report lA-Sijl, hO to hS (1963).

W L

B. G. Wyboume, J. Opt. Soc. Am. 5U, 267 (L) (196U). Z E

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

R. Winkler, Zeit. Phys. 18U, 1^33 to U50 (1965). hfs

I. Koniordos und R. Winkler, Phys. Lett. (Amsterdam) A27, 198 to 199

(1968). IS

Eu III

A. S. King, Astroph. J. 89, 377 to U30 (1939). Temperature Classification

H. N. Russell, W. Albertson and D. N. Davis, Phys. Rev. 60, 653 (I9I4I).

W L, Z E

P. Bagus et J. Picart, Compt. Rend. 266b , 8U2 to 8I4U (1968). hfs

I. Koniordos und R. Winkler, Phys. Lett. (Amsterdam) A2 7, I98 to 199

(1968). IS

16
EUROPIUM

Eu IV

B. R. Judd, Proc. Phys. Soc. (London) A69, l57 to I6U (19$6). TheoryGround Term

J. B. Gruber and J. G. Conway, J. Ghem. Phys. 3U, 632 to 638 (I96I), T,

Configuration Theory

G. S. Ofelt, J. Chem. Phys. 38, 2l7l to 2l80 (I963). Theory hf^ Configuration T, Z E

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UUl2 to

UU23, UU50 to UU55 (1968). T Free Ion Spectra, Theory

GADOLINIUM (Z « 6U)

Gd I

A. S. King, Astroph. J. 72, 221 to 2^5 (1930). Temperature Classification

W. Albertson, Phys. Rev. h7, 370 to 376 (1935); U9, 208 (A) (1936). T, C L

H. N. Russell, Astroph. J. 96, 11 to Ik (19U2). I P, T, C L

A. S. King, Astroph. J. 97, 323 to 38O (19U3). W L, Temperature Classification

P. F. A. Klinkenberg, Physica 12, 33 to U8 (19U6). T, C L, Z E, I S

H. N. Russell, J. Opt. Soc. Am. UO, 550 to 575 (1950). I P, T, C L

P. Brix, Zeit. Phys. 132 , 579 to 607 (1952). I S

P. Brix and H. D. Engler, Zeit. Phys. 133, 362 to 369 (1952). IS, T, C L

S. Suwa, Phys. Rev, 86, 2U7 to 2U8 (L) (1952). hfs

K. Murakawa, Phys. Rev. 96, l5ii3 to l5U6 (195U). hfs, I S

D. R. Speck, Phys. Rev. 101, 1725 to 1729 (1956). I S, hfs

H« Kopfermann, L. Kriiger und A. Steudel, Ann. der Phys. [6] 20, 258 to

26U (1957). I S

K. F. Smith and I. J. Spalding, Proc. Roy. Soc. London A265, 133 to lUO

(1961). Z E Atomic Beam

E. H. Pinnington, J. Opt. Soc. Am. 57, 1252 to 1259 (1967). T, C L, Z E

N. Spec tor. Analysis in progress (1968).

17

360-361 0-^9 4
GADOLINIUM

Gd II

A. S. King, Astroph. J. 72, 221 to 25^ (1930). Temperature Classification

W. E. Albertson, H. Bruynes and R. Hanau, Phys, Rev. 57, 292 to 293

(19iiO). T, C L, Z E

H. N. Russell, Astroph. J. 96, 11 to ih (19U2). T

A. S. King, Astroph. J. 97, 323 to 380 (19U3). W L, Temperature

Classification

H. N. Russell, J. Opt. Soc. Am. UO, 5^0 to 575 (1950). I P, T, C L

P. Brix, Zeit. Phys. 132 , 579 to 607 (1952). I S

N. Zeldes, Phys. Rev. 90, Ul3 to Ul5 (1953). Theory

P. Brix und K.-H. Lindenberger, Zeit, Phys. lUl, 1 to 5 (1955). I S, T,

C L

H. Kopfermann, L. Krilger und A. Steudel, Ann. der Phys, [6] 20, 258 to

26U (1957). IS ~

G. Racah, unpublished material (I963). T, C L

Z. B. Goldschmidt and S. Nir, Revised analysis (1965). T, Theory

G. Smith and B. G. 'V^bourne, J. Opt. Soc. Am. 55, 1278 to 1283 (1965).

Theory T, Z E

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

D. Desmarais and E. H. Pinnington, J. Opt. Soc. Am. 57, 12U5 to 125l

(1967). T, C L, Z E

N. Spector, Analysis in progress (I968); J. Opt. Soc. Am. 59, in press

(A) (February 1969). T

Gd III

A. S. King, Astroph. J. 97, 323 to 38O (19ii3). W L

W. R. Callahan, J. Opt. Soc. Am. 53, 695 to 700 (I963). T, C L

H. Crosswhite, Analysis in progress, Johns Hopkins Univ. (I968).

18
GADOLINIUM

Gd IV

B. R. Judd, H. M. Crosswhite and H. Grosswhite, Phys, Rev. I69, I30 to

138 (1968). Theory

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, hhl2 to

UU23, hlik3 to Uiili6 (1968). T Free Ion Spectra, Theory

TERBIUM (Z = 65)

Tb I

A. S. King, Astroph. J. 72, 221 to 2^5 (1930). Temperature Classification, hfs

S. P. Davis, Astroph. J. 132, U86 to ii92 (I960). W L, hfs, Z E

J. Sugar, Jo Research Nat. Bur, Std. 66a, 321 to 32U (1962). Ground

State

J. G. Conway and B. G. 'Wyboume, Phys. Rev. I30 , 2325 to 2332 (I963).

Theory

I, Bender, S. Penselin und K. Schlupmann, Zeit, Phys, 179 , U to 8 (I96U).

Ground State, Z E, hfs

P. F. A. Klinkenberg, Zeit. Phys. I80, 17U to 177 (I96U). Ground State,

Z E

C. Amoult and S. Gerstenkom, J. Opt. Soc. Am. 56, 177 to 181 (1966).

T, Z E, hfs, Theory

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

0,8/U.to 2.5/L

P. F. A. Klinkenberg, Physica 32, 1113 to 11^47 (1966). T, C L, Z B

P. F. A. Klinkenberg and E. Meinders, Physica 32, l6l7 to 1632 (I966).

T, C L, Z E, hfs

P. F. A. Klinkenberg, Physica 37, 197 to 2lh (1967). T, C L, Z E

E. Meinders and P. F. A. Klinkenberg, Physica 38, 253 to 27U (1968). T,

C L, Z E, W L

W. J. Childs and L, S. Goodman, Bull, Am. Phys. Soc. lU, 8U (I969). Z S

Atomic Beam

19
TERBIUM

Tb II

A. S. King, Astroph. J. 221 to 255 (1930). Temperature Classification, hfs

S. P. Davis, Astroph. J. 132 , U86 to k92 (I960). W L, hfs, Z E

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

Tb IV

B. R. Judd, Proc. Phys. Soc. (London) a69, 157 to I6I4 (1956). Theory

Ground Term

G. S. Ofelt, J. Ghem. Phys. 38, 2l7l to 2l80 (I963). Theory

Uf^ Configuration, T, Z E

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UUl2 to

UU23, UUU7 to hhh9 (1968). T Free Ion Spectra, Theory

DYSPROSIUM (Z = 66)

Dy I

A. S. King, Astroph. J. 72, 221 to 255 (1930). Temperature Classification

A. S. King, unpublished material (1953). Temperature Classification

K. Murakawa and T. Kamei, Phys. ReVo 92, 325 to 327 (1953). hfs

Yu. P. Dontsov, Opt. i Spektr. 1, 6l2 to 6I6 (1956). I S

Ko Murakawa, J. Phys. Soc. Japan 11, 80h to 805 (1956). hfs

A. I. Akimov, Opt. i Spektr. 3, 51^5 to 55l (1957). W L

A. Y. Cabezas, I; Lindgren and R. Marrus, Phys. Rev. 122, 1796 to 18 01

(1961). Z E Atomic Beam

Ko F. Smith and Ic J. Spalding, Proco Roy. Soc. London A265, 133 to lUO

(1961). Z E Atomic Beam

J. G. Conway and B. G. V^oume, Phys. Rev. 130, 2325 to 2332 (I963).

Theory

20
DYSPROSIUM

Dy I - Continued

W. F. Meggers, unpublished material (1963). T, C L

A. R. Striganov, A. F. Golovin a M. P. Gerasimova, Opt. i Spektr. lU, 7

to 11 (1963). IS ~

J. Reader and J. Sugar, J. Opt. Soc« Am. 56, II89 to 119U (1966). I P

W. Ebenhoh, V. J. Ehlers und J. Ferch, Zeit. Phys. 200, 8U to 92 (1967).

hfs, Z E

A. F. Golovin a I. F. Kramer, Opt. i Spektr. £3, 195 to 199 (1967). I S

J. G. Conway and E. F. Worden, J. Opt. Soc. Am. 58, l56U (A) (1968). T,

Analysis in progress

Dy II

A. S. King, Astroph. J. 72, 221 to 255 (1930). Temperature Classification

A. S. King and C. E. Moore, Astroph. J. 98, 33 to U2 (19U3). W L, Solar

Identifications

J. M. Blank, Thesis, Mass. Inst, Tech., Cambridge, Mass. (1953). T, C L

A. S. King, unpublished material (1953). Temperature Classification

K. Murakawa and T. Kamei, Phys. Rev. 92, 325 to 327 (1953). hfs

G. Racah, unpublished material (1955). T, C L

Yu. P. Dontsov, Opt, i Spektr. 1, 6l2 to 616 (1956). I S

K. Murakawa, J. Phys. Soc. Japan 11, 80a to 805 (1956). hfs

A. I. Akimov, Opt. i Spektr, 3, ShS to 55l (1957). W L

J. R. McNally, Jr., Letter (1959). T, Z E

W. F. Meggers and C. H. Corliss, unpublished material (I96I). T, C L

J, Sugar and J. Reader, J. Opt, Soc, Am. 55, 1286 to 1290 (1965). I P

J. G. Conway and E. F. Worden, J, Opt, Soc. Am. 58, l56U (A) (1968). T,

Analysis in progress

21
DYSPROSIUM

Dy IV

B. R. Judd, Proc. Phys. Soc. (London) a69, 1^7 to l6h (19^6). Theory

Ground Term

B. G. Wyboume, J. Chem. PhySo 36, 2301 to 2311 (1962). Theory, Terms

W. T. Gamall, P. R. Fields and K. Rajnak, J. Chem. Phys. U9, UUl2 to

UUU2 (1968). T Free Ion Spectra, Theory

HOLMIUM (Z « 67)

Ho I

A. S. King, Astroph. J. 72, 221 to 2^5 (1930). Temperature Classification, hfs

V. B. Belyanin, Opt. i Spektr. 3, 322 to 327; 5, 236 to 238, 3iiO to 3l|l

(1958). hfs, W L

A. Y. Cabezas, I. Lindgren and R. Marrus, Phys. Rev. 122 , 1796 to I8OI

(1961). Z E Atomic Beam

J. G. Conway and B. G. 'Wyboume, Phys. Rev. I30, 2325 to 2332 (I963).

Theory

L. S. Goodman und K. Schliipmann, Zeit. Phys. ]J8, 235 to 2U3 (196[i).

hfs, Z E

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

0.8/X.to 2.5/a

J. Reader and J. Sugar, J. Opt. Soc. Am. II89 to 119U (1966). I P

N. Spector and J. Sugar, Analysis in progress (I969).

Ho II

A. S. King, Astroph. J. 72, 221 to 255 (1930). Temperature Classification, hfs

A. Przybylski, Acta Astronomica 13, 2l7 to 229 (1963). Stellar Identifications

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

22
HOLMIUM

Ho II - Continued

J. Sugar, J. Opt. Soc. Am. 58, l5l9 to 1523 (1968). hfs. Levels, E D

N. Specter and J. Sugar, Analysis in progress (1969).

B. Belyanin, Opt. i Spektr. 3, 322 to 327 (1957). hfs, W L

Ho III

J. H. McElaney, J. Opt. Soc. Am. 57, 870 to 872 (1967). T, E D

H. M. Crosswhite, Analysis being extended (1968).

Ho IV

B. R. Judd, Proc. Phys. Soc. (London) a69, 157 to l6U (1956). Theory

Ground Term

M. H. Crozier and W. A. Runciman, J. Chem. Phys. 35, 1392 to ll409 (1961).

Theory, Z E

S. Hiifner, Zeit. Phys. l6U, 257 to 268, 269 to 273 (1961); 166, 2li2

(1962). Theory f'^ Configuration

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Phys, U9, UUl2 to

U1;U2 (1968). T Free Ion Spectra, Theory

ERBIUM (Z = 68)

Er I

K. Murakawa and S. Suwa, Phys. Rev. 85, 683 to 68I4 (L) (1952). hfs, I S

A. G. Shenstone, unpublished material (1952). VI L Vac. Ultraviolet

A. I. Akimov, Opt. i Spektr. 3, 5ii5 to 55l (1957). W L

J. W. Lindner and S. P. Davis, J. Opt. Soc. Am. U8, 5i42 to 5ii7 (1958).

Z E, W L

A. Y. Cabezas, I. Lindgren and R. Marrus, Phys. Rev. 122, 1796 to I8OI

(1961). Z E Atomic Beam

23
ERBIUM

Kr I - Continued

K. F. Smith and I. J. Spalding, Proc, Roy. Soc. London A26^, 133 to ihO

(1961). Z E Atomic Beam

J. G. Conway, unpublished material (1962). W L

J. G. Conway and B. G. Vl^bourne, Phys. Rev. I30, 2325 to 2332 (I963).

Theory

W. M. Doyle and R. Marrus, Phys. Rev. 131, 1586 to l588 (I963). hfs, Z E

S. Held, Israel Atomic Energy Commission Report lA-813, 23 pp. (1963).

W L

M. Wilson, Observations (I963). Absorption Spectra

D. A. Volkov a A. F. Golovin, Opt. i Spektr. I8, 185 to 189 (1965). I S

E. Paul Haynes, II and John S. Ross, Phys. Rev. 137, B790 to b792 (1965).

I S

L. C. Marquet and W. E. Behring, J. Opt. Soc. Am. 55, 576 (l) (1965). T

L. C. Marquet and S. P. Davis, J. Opt. Soc. Am. 55, hll to U7U (1965).

T, Z E

K. F. Smith and P. J. Unsworth, Proc. Phys. Soc. (London) 86, 12li9 to

1257 (1965). hfs

N. Spector, J. Opt. Soc. Am. 55, 576 to 577 (L) (1965). T

G. Racah, Z. B. Goldschmidt and S. Toaff, J. Opt, Soc. Am. %, h07 to U08

(L) (1966). T, Z E, E D, Theory

J. Reader and J. Sugar, J. Opt. Soc. Am. II89 to 119ii (1966). I P

N. Spector, J. Opt. Soc. Am. 56, 3Ul to 3U9 (1966). T, C L Absorption,

Z E, E D, Theory

A. F. Golovin a I. F„ Kramer, Opt. i Spektr. 23, 195 to 199 (1967). I S

K. Heilig and A. Steudel, Program Atomic Sp. Symposium, Nat. Bur. Std.,

p. 16 (1967). Z E

N. Spector, J. Opt. Soc. Am. 57, 308 to 311 (1967). T, E D, C L

K. Heilig und 0. Kircher, Zeit. Phys, 212, 2ii3 to 2U7 (I968). Z E, W L,

C L

2k

i
ERBIUM

Er II

L. Wilets and L. C. Bradley, III, Phys. Rev. 8U, 10^5 to 10^6 (L) (1951).

I S

A. G. Shenstone, unpublished material (19^2). W L Vac. Ultraviolet

L. Wilets and L. C. Bradley, III, Phys. Rev. 87, 1018 to 1022 (1952). I S

A. I. Akimov, Opt. i Spektr. 3, 5U5 to 55l (1957). W L

J. W. Lindner and S. P. Davis, J. Opt. Soc. Am. U8, 5U2 to 5U7 (1958).

Z E, W L

J. R. McNally, Jr. and K. L. Vander Sluis, J. Opt, Soc. Am. U9, 200 (l)

(1959). T, Z E

K. L. Vander Sluis, unpublished material (I960). T, C L

B. R. Judd and L. G. Marquet, J. Opt. Soc. Am. 52, 5oU to 507 (1962).

T, Z E, E D, Theory

Z. B. Goldschmidt, J. Opt. Soc. Am. 53, 59U to 595 (1963). T, Z E,

Theory

S. Held, Israel Atomic Energy Commission Report lA-813, 23 pp. (1963).

W L

L. C. Marquet and W. E. Behring, J. Opt. Soc. Am. 5U, lli03 (A) (196U).

Analysis being continued

N. Specter, Observations (196ii). W L, Z E

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

F. P. J. Valero and S. P. Davis, J. Opt. Soc. Am. 55, l572 (A) (1965).

hfs

K. Heilig und 0. Kircher, Zeit. Phys. 212, 2U3 to 2U7 (1968). Z E, W L

Br III

H. M. Crosswhite, unpublished material (1965). W L

J. Becker, Dissertation, The Johns Hopkins Univ. (I966). T, G L, Theory

25
ERBIUM

Er IV

B. G. Wyboume, J. Chem. Phys. 32, 639 to 6U2 (I960); 3U, 279 to 281

(1961). Theory

K. Rajnak, J. Chem. Phys. U3, 8U7 to 855 (1965). Theory

W. J. Carter, Dissertation, The Johns Hopkins Univ.; Dissertation Abstr.

B27, 36U2 (1967), Univ. Microfilms (Ann Arbor, Mich.) Order No.

66-12510, 107 pp. (1967). See Chem. Abstr. 66, 7o635x (1967). T, C L

W L

W. J. Carter and H. M. Crosswhite, unpublished material (I969). T, C L,

E D

H. Crosswhite, H. M. Crosswhite and B, R. Judd, Phys. Rev. l7U , 89 to 9k

(1968). Theory

Z. B. Goldschmidt, A. Pasternak and Z. H. Goldschmidt, unpublished

material (I968). Theory UfH Configuration

W. T. Camall, P. R. Fields and K. Rajnak, J. Chem. Vhys, h9, hhZh to

UUU2 (1968). T Free Ion Spectra, Theory

THULIUM (Z = 69)

Tm I

W. Albertson, Phys. Rev. U7, 370 to 376 (1935). Configurations

A. S. King, Astroph. J. 9U, 226 to 231 (I9UI). Temperature Classification

W. F. Meggers, Rev. Mod. Phys. lU, 96 to 103 (19U2). T, C L

L. F. H. Bovey and W. R. S. Garton, Proc. Phys. Soc. (London) a67, U76 to

U77 (195U). W L Absorption

G. Racah, unpublished material (1955).

A. I. Akimov, Opt. i Spektr. 3, 5U5 to 55l (1957). W L

A. Y. Cabezas and I. Lindgren, Phys. Rev. 120, 920 to 925 (I960), hfs,

Z B

L. Allen, United Kingdom, Atomic Energy Research Establishment AERE-Rh029,

3U pp. (1962). Z E, W L

26
THULIUM

Tm I - Continued

W. F. Meggers and J, Sugar, New description in progress (1962).

G. Jo Ritter, Phys. Rev. 128, 2238 to 22U3 (1962). hfs, Z E

J. Sugar, J. Research Nat. Bur. Std. 66a, 321 to 32U (1962). Ground

States

J. C. Walker, Phys. Rev. 127, 1739 to l7hS (1962). hfs, Z E

J. Blaise et R. Vetter, Compt. Rend. 2|6, 63O to 633 (1963). I P, T, hfs

Y. Bordarier, R. Vetter et J. Blaise, J. de Phys. 2U, 1107 to 1112 (I963).

hfs, G L, E D, Theory

D. L. Kaminsky, K. M. Novik, N. I. Alekseyev and L. L. Varshalovich,

Opt. i Spektr. l5, Uhl to hh^ (1963). hfs

W. F. Meggers, Analysis in progress (1963). T, C L, Z E, W L

J. Blaise et P. Camus, Compt. Rend. 260, U693 to U696 (1965). T, Z E

P. Camus et J. Blaise, Compt. Rend. 26l, ii359 to U36I (1965). I P, T

K. Murakawa, J. Phys. Soc. Japan 20, 1733 (1965). I P

P. Camus, J. de Phys. 27, 7l7 to 725 (1966). Theory Z E ED

S. Gerstenkom, unpublished material (I966). Near Infrared Observations

0.8/uto

J. Reader and J. Sugar, Jo Opt. Soc. Am. 56, II89 to 119li (1966). I P

P. Camus, J. L. Verges, J. Sugar and W. F. Meggers, Program Atomic Sp.

Symposium, Nat. Bur. Std., p. 29 (A) (September 1967). I P, Knovm

configurations

D. Giglberger and S. Penselin, Zeit. Phys. 199, 2hh to 255 (1967). hfs,

Z E

J. Sugar, Analysis in progress (1969).

B. Budick and A. Simievic, "Spectroscopic and Group Theoretical Methods

in Physics'*, F. Bloch etc., Editors, pp. I6I to l65 (John Wiley and

Sons, N. Y., 1968); Bull. Am. Phys. Soc. [2] 13, l7l (1968). hfs, Z E

Atomic Beam

27
THULIUM

Tm II

A. S. King, Astroph. J. 9h, 226 to 231 (I9UI). Temperature Classification

W. F. Meggers, ReVo Mod. Phys. lU, 96 to 103 (19U2). T, C L

K. Ho Lindenberger, Zeit. Phys. lUl, U76 to U85 (19<5). hfs, T, C L

A. I. Akimov, Opt. i Spektr. 3, to 55l (1957). W L

L. Allen, United Kingdom, Atomic Energy Research Establishment AERE-RU029,

3U pp. (1962). Z E, W L, T

W. F. Meggers and J. Sugar, New description in progress (1962).

J. Sugar, J. Research Nat. Bur. Std. 66A, 321 to 32U (1962). Ground

States

W. F. Meggers, Analysis in progress (I963). T, C L, Z E, W L

J. Blaise et P. Camus, Compt. Rend. 260, U693 to U696 (1965). T, Z E

P. Camus et J. Blaise, Compt. Rend. 26l, U359 to U36l (1965). T

J. Sugar and J. Reader, J. Opt. Soc. Am. 55, 1286 to 1290 (1965). I P

N. Spector, J. Opt. Soc. Am. £7, 312 to 3l7 (1967). T, C L, E D, Theory

J. Sugar, Analysis in progress (I969).

Tm III

H. M. Crosswhite, unpublished material (1965). W L

Tm IV

W. A. Runciman and B. G. Wyboume, J. Chem. Phys. 31, llU9 to ll50 (L)

(1959). Theory

J. B. Gruber and J. G. Conway, J. Chem. Phys. 32, 1176 to 1182 (I960).

Theory

W. T. Carnall, P. R. Fields and K. Rajnak, J. Chem. Phys, U9, UU2U to

khh2 (1968). T Free Ion Spectra, Theory

28
YTTERBIUM (Z = 70)

Yb I

A. S. King, Astroph. J. Jh, 328 to 335 (1931). Temperature Classification

W. F. Meggers and B. F. Scribner, J. Research Nat. Bur. Std. 19, 6^1 to

66h, RP1053 (1936). T, C L, W L "~

P. Brix, Zeit. Phys. 132, 579 to 607 (1952). I S

K. Krebs and H. Nelkowski, Zeit. Phys. lU5, 5U3 to 559 (1956). IS, hfs

C. J. Humphreys and E. Paul, Jr., NAVORD Report 5970, 57 to 67 (1959).

F L Near Infrared

W. F. Meggers and C. H. Corliss, J. Opt. Soc. Am. 50, 1136 (A) (I960).

T, Z E

L. Allen, United Kingdom, Atomic Energy Research Establishment AERE-Rh029,

3h pp. (1962). Z K, W L

J. S. Ross and K. Murakawa, Phys. Rev. 128, 1159 to ll60 (1962). hfs

J. Sugar, J. Research Nat. Bur. Std. 66A, 321 to 32h (1962). T

W. F. Meggers, unpublished analysis (February 1963).

J. S. Ross, J. Opt. Soc. Am. 53, 299 to 300 (l) (1963). I S, hfs

J. S. Ross and K. Murakawa, J. Phys. Soc. Japan 19, 2U9 to 253 (196Ii).

hfs

Yu. Chaiko, Opt. i Spektr. 20, 760 to 767 (1966). I S

Vf. F. Meggers and C. H. Corliss, J. Research Nat. Bur. Std. 70A, 63 to

106 (1966). W L, Z E

J. Reader and J. Sugar, J. Opt. Soc. Am. S6, II89 to 119U (1966). I P

B. Budick and J. Snir, Phys. Lett. (Amsterdam) A2U, 689 to 69O (1967).

Z E Atomic Beam

B. Budick and J. Snir, Phys. Lett. (Amsterdam) B2U, 276 to 277 (1967).

hfs

A. C. Parr and F. A. Elder, J. Chem. Phys. ii9, 2665 to 2667 (1968).

Series I P

W. F. Meggers, Monograph in course of preparation by C. E. Moore (I969).

T, C L, Z E

29
YTTERBIUM

Yb II

A. S. King, Astroph. J. 7U, 328 to 335 (1931). Temperature Classification

W. F. Meggers and B. F. Scribner, J, Research Nat. Bur, Std. 19, 65l to

66a, RP1053 (1938). T, C L, W L ~

W. F. Meggers, J. Opt. Soc. Am. 37, 988 to 989 (A) (19U7). T, C L, Z E

G. Racah, Bull. Research Council Israel 3, U37 (A) (195U). Theory

D. Sperber, Bull, Research Council Israel 3, U37 (A) (195U). Theory

G. Racah, unpublished material (19^5). Theory

K. Krebs and H. Nelkowski, Zeit, Phys, IhS, 5ii3 to 559 (1956). IS, hfs

C. J. Humphreys and E. Paul, Jr., NAVORD Report 5970, 57 to 67 (1959).

W L Near Infrared

G. Racah, J. Opt. Soc. Am. 50, ^08 to Ull (I960). T, E D, Theory

L. Allen, United Kingdom, Atomic Energy Research Establishment AERE-RU029,

3U pp. (1962). Z E, W L

J. Sugar, J. Research Nat. Bur, Std, 66a, 321 to 32U (1962). T

W. F. Meggers, unpublished analysis (February 1963).

J. S. Ross and K. Murakawa, J. Phys. Soc, Japan 19, 2U9 to 253 C196U).

hfs

J. Sugar and J. Reader, J. Opt, Soc. Am. 55, 1286 to 1290 (1965). I P

Yu. Chaiko, Opt. i Spektr. 20, 760 to 767 (1966). I S

W. F. Meggers and C. H. Corliss, J. Research Nat, Bur, Std, 70A , 63 to

106 (1966). W L, Z E

W. F. Meggers, J. Research Nat. Bur. Std, TlA, 396 to Shh (1967). I P,

T, C L, E D

N. Spector, J. Opt. Soc. Am. 58, 837 to 8U2 (1968). Theory

30
YTTERBimi

Yb III

B. W. Bryant, Johns Hopkins Spectr. Report No. 21, 82 pp. (I96I). T,

C L, ED, W L, hfs, Stark Effect, Theory

B. W. Bryant, J. Opt. Soc. Am. |5, 77l to 779 (1965). I P, T, C L, E D,

Theory

W. F. Meggers and C. H. Corliss, Je Research Nat. Bur. Std. 70A, 63 to

106 (1966). W L, Z E

Yb IV

B. W. Brj'-ant, Johns Hopkins Spectr. Report No. ?1, 82 pp. (I96I). T,

C L, W L, Theory

B. W. Brj^ant, J. Opt. Soc. Am. 55, 771 to 779 (1965). T, Theory

W. F. Meggers and G. H. Corliss, J. Research Nat. Bur. Std. 70A, 63 to

106 (1966). W L

LUTETIUM (Z = 57)

Lu I

W. F. Meggers and B. F. Scritner, Bur. Std. J. Research 5, 73 to 81,

RP187 (1930). T, C L

A. S. King, Astroph. J. 7U, 336 to 3I4I (1931). Temperature Classification

W. F. Meggers and B. F. Scribner, J. Research Nat. Bur. Std. 19, 31 to

39, RPIOO8 (1937). W L

L. F. H. Bovey and W. R. S. Carton, Proc. Phys, Soc. (London) a67 , 291 to

293 (195h). W L Absorption

P. F. A. Klinkenberg, Physica 21, 53 to 62 (195U). I P, T, C L, G D

L. F. H. Bovey, E. B. M. Steers and H. S. Wise, Proc. Phys. Soc. (London)

A69, 783 to 78U (L) (1956). C L Infrared

A. Steudel, Zeit. Phys. l52, 599 to 623 (1958). hfs, Z E

31
LUTETIim

Lu I - Continued

L. Bovey, Research (London) 13, 363 to 372, U28 to h?>^ (I960). G D, E D,

G L

Lo Bovey, K. B. M. Steers and H. S. Wise, United Kingdom, Atomic Energy

Research Establishment AERE^R3225, 8 pp. (I96O). G L, W L

J. Blaise, J. Bauche, S. Gerstenkom et F. S. Tomkins, J. de Phys. 22,

Ul7 to U27 (1961). hfs ~~

F. R. Petersen and H. A. Shugart, ?hys. Rev. 126, 2^2 to 2^7 (1962).

Z E, hfs

G. Jo Ritter, Phys. Rev. 1?6, 2U0 to 252 (1962). hfs, Z E

U. Horstmann, G. Noldeke und A. Steudel, Ann, der Phys. [7] 12, II4 to 19

(1963). hfs, T

E. H. Pinnington, Can. J. Phys. Ul, 129U to 130h (1963). Z E, W L, hfs, T

Lu II

W, F. Meggers and B. F. Scribner, Bur. Std. J. Research 5, 73 to 81,

RP187 (1930). T, C L

A. S. King, Astroph. J, 7U, 336 to 3Ul (1931). Temperature Classification

W. F. Meggere and B. F. Scribner, J. Research Nat, Bur. Std. 19, 31 to 39,

RPIOO8 (1937). W L

L. F. H. Bovey and R, "W. B. Pearse, United Kingdom, Atomic Energy Research

Establishment AERK g/R1976, 19 pp. (1956). IP, T, C L

K. Murakawa, Phys. Rev. 110, 393 to 396 (1958). hfs

A. Steudel, Zeit. Phys. l5|, 599 to 623 (1956). hfs, Z E

J. Blaise, J. Bauche, S. Gerstenkom et F. S. Tomkins, J. de Phys. 22,

Ul7 to U27 (1961). hfs

E. H. Pinnington, Can. J. Phys. Ul, 1305 to I306 (I963). Z S, W L, T

J. Sugar and J, Reader, J. Opt, Soc. Am, 55, 1286 to 1290 (1965). I P

Z. B. Goldschmidt, Colloq, Intern. Centre Nat. Rech. Sci. (Paris) No. I6U,

365 to 38h (1967). Theory

32
LUTETIUM

Lu III

W. F. Meggers and B. F. Scribner, Birr. Std. J. Research 5, 73 to 81,

RP187 (1930). T, C L

W. F. Meggers and B. F. Scribner, J. Research Nat, Bur, Std. 19, 31 to

39, RP1008 (1937). W L ~

A. Steudel, Zeit. Phys. l52, 599 to 623 (1958). hfs, Z E, T

K. Heilig und P. Kasten, Naturwiss. 5U, 338 (1967). hfs

ACTINIUM (Z = 89)

Ac I

N. I. Kaliteevskii and A. N. Razumovskii, Atomnaya Energiya 3, 5U8 to 550

(1957). W L

W. F. Meggers, Spectrochim. Acta 10, 195 to 200 (1957). C L, L

Ac II

N. lo Kaliteevskii and A. N. Razumovskii, Atcannaya Energiya 3, 5U8 to 550

(1957). W L

W. F. Meggers, Spectrochim. Acta 10, 195 to 200 (1957). C L, W L

Ac III

N. I. Kaliteevskii and A. N. Razumovskii, Atomnaya Energiya 3, 5U8 to 550

(1957). W L

W. F. Meggers, Spectrochim. Acta 10, 195 to 200 (1957). C L, W L

Ac IV

¥. F. Meggers, Spectrochim. Acta 10, 195 to 200 (1957). W L?

33
THORIUM (Z = 90)

Th I

M. Fred, Astropho J. 87, 176 to 197 (1938). W L, Z E

C. Moore-Sitterly and A. S. King, Proc. Am. Phil. Soc. 86, 339 to 3Ul

(19U3). W L ~

J. R. McNally, J. Opt. Soc. Am. 3^, 390 to 398 (19U^). W L Infrared

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. 62 to 6^ (N. V. NoordHollandsche Uitgevers Maatschappij, Amsterdam) (19ii6). T, Z E

G. L. Stukenbroeker and J. R. McNally, Jr. , J. Opt. Soc. Am. U3, 36 to Ul

(1953). I S, T, C L

"~

G. W. Charles, Oak Ridge Nat. Lab. ORNL-2319, lU3 to 1^9 (1958). T, C L,

Z E, I S

W. F. Meggers and R. W. Stanley, J. Research Nat. Bur. Stdo 6l, 95 to 103,

RP2891 (1958). Interf. W L, Intervals

R. Zalubas, J. Research Nat. Bur. Std. 63A, 275 to 278 (1959). T, G L, Z E

R. E. Trees, Physica 26, 353 to 360 (I960). Theory Z E

E. A. Vemyi a V. N. Egorov, Opto i Spektr. 9, 692 to 702 (I960). I S, T

R. Zalubas, Nat, Bur. Std. Monograph 17, 103 pp. (I960). W L

B. Edlen, TranSo Intern. Astron. Union llA, 105 to 108 (1961); 12A, 137

to 1U3 (196U). W L Standards

A. Davison, A. Giacchetti and R. W. Stanley, J. Opt. Soc. Am. 52, hhl to

U5l (1962). Interf. W L

G. W. Charles, J. Opt. Soc. Am. 267 to 268 (l) (196U). IS, T, W L

V. N. Egorov, Opto i Spektr. 16, 5U9 to 55U (196U). hfs

A. Giacchetti, Mo Gallardo, M. Jo Garavaglia, Z. Gonzalez, F. P. J. Valero

and E. Zakowicz, J. Opt. Soc. Am. 957 to 959 (L)(196ii). Interf. W L

T. A. Littlefield and A. Wood, Jo Opt. Soc. Am„ 55, l509 to l5l6 (1965).

Interf. W L, Intervals

W. F. Meggers and R. W. Stanley, J. Research Nat. Bur. Std. 69A, 109 to

118 (1965). Interf. Hf- L, Intervals

A. Giacchetti, Argonne Nat. Lab. ANL-7209, 26 pp. (1966). Interf. W L

3U
THORIUM

Th I - Continued

E. B. M. Steers, Spectrochim, Acta 23B, 135 to 166 (1967). T, C L, W L

IjLLto 2.S/JL

F. P. J. Valero, J. Opt. Soco Am. 58, U8U to 1|89, 10U8 to 1053 (1968).

T, C L, Interf . W L, Intervals

M. Wilson, J. Opt. Soc. Am. 58, II4OU to lUo5 (1968). Theory

R. Zalubas, J. Opt. Soc. Am. 58, 1195 to 1199 (1968). T, Z E

R. Zalubas, unpublished material (I969). T, G L, Z E, W L

Th II

M. Fred, Astroph. J. 87, l76 to 197 (1938). W L

C. Moore-Sitterly and A. S. King, Proc. Am. Phil. Soc. 86, 339 to 3Ul

(I9U3). W L, C L, Solar data

T. L. de Bruin, P. F. A. Klinkenberg and PH. Schuurmans, Zeit. Phys. 122 , 23 to 35 (I9UU). T, G L, Z E

J. R, McNally, Jr., J. Opt. Soc. Am. 35, 390 to 398 (19U5). T, G L, Z E,

W L Infrared

P. F. A. Klinkenberg, Physica 12, 33 to U8 (19U6). G L, Z E

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. U9 to 62 (N. V. NoordHollandsche Uitgevers Maatschappij, Amsterdam) (19U6). T, G L, Z E, ED

D. Kessler, Physica l7, 913 to 919 (195l). Theory T, Z E

Y. Eisenberg, Physica I8, 177 to I8I (1952). Theory T, Z E

G. L. Stukenbroeker and J. R. McNally, Jr., J, Opt. Soc. Am. U3, 36 to hi

(1953). I S, T, G L

G. W. Gharles, Oak Ridge Nat. Lab. ORNL-2319, 23 to ll;2, l53 to l59

(1958). T, G L, Z E, I S

W. F. Meggers and R. F. Stanley, J. Research Nat. Bur. Std. 6I, 95 to

103, RP2891 (1958). Interf. W L, Intervals

J. B. Ganz, Bull. Research Gouncil Israel 9F, 31 to U2 (I96O). Theory

T, Z E

35
THORIUM

Th II - Continued

E. A. Vemyi a V. N. Egorov, Opt. i Spektr. 9, 692 to 702 (I96O). I S, T

R. Zalubas, Nat. Bur. Std. Monograph 17, 103 pp. (I96O). W L

B. Edlen, Trans. Intern. Astron. Union llA, 105 to 108 (I96I); 12A, 13?

to IU3 (I96U). W L Standards

A. Davison, A. Giacchetti and R. W. Stanley, J. Opt. Soc. Am. 52, UU7 to

U5l (1962). Interf. WL ~

G. W. Charles, J. Opt. Soc. Am. ^, 267 to 268 (L) (196U). I S, T, W L

V. N. Egorov, Opt. i Spektr. I6, to ^% (196U). hfs

A. Giacchetti, M. Gallardo, M. J. Garavaglia, Z. Gonzalez, F. P. J. Valero

and E. Zakowicz, J. Opt. Soc. Am. 957 to 959 (L)C196U). Interf. W L

T. A. Littlefield and A. Wood, J. Opt, Soc. Am. 55, l509 to l5l6 (1965).

Interf. W L, Intervals

W. F. Meggers and R. W. Stanley, J. Research Nat. Bur. Std. 69A, 109 to

118 (1965). Interf. W L, Intervals

A. Giacchetti, Argonne Nat, Lab. ANL-7209, 26 pp. (1966). Interf. W L

E. B. M. Steers, Spectrochim. Acta 23B, 135 to I66 (1967). T, C L, W L

1/Ato 2.5a

J. Blaise und A. Steudel, Zeit. Phys. 209, 311 to 328 (I968). I S

F. P. J. Valero, J. Opt. Soc. Am. 58, ii8U to U89 (1968). Interf. W L

Th III

R. J. Lang, Phys. Rev. 7l, 907 (l) (19U7). T

P. F. A. Klinkenberg, Physica I6, 6I8 to 650 (1950). I P, T, C L, Z E,

E D, Stark Effect

G. Racah, Physica I6, 65l to 666 (1950). Theory T, Z E

G. W. Charles, Oak Ridge Nat. Lab. ORNL-2319, 7 to 23 (1958). I P, T,

C L, Z E

R. Zalubas, Nat, Bur. Std. Monograph 17, 103 pp. (I960). W L

36
THORIUM

Th IV

P. F. A. Klinkenberg and R. J. Lang, Physica 77U to 788 (19U9). I P,

T, C L, Z E, G D

P. F. A. Klinkenberg, Physica 16, 185 to 197 (1950). T, C L, Z E, G D

G. W. Charles, Oak Ridge Nat, Lab. ORNI^2319, 5 to 6 (19^8). I P, T,

G L, Z E

R. Zalubas, Nat, Bur. Std, Monograph 17, 103 pp. (I960). W L

PROTACTINIUM (Z = 91)

Pa I

F. S. Tomkins and M, Fred, J. Opt. Soc. Am. 39, 3^ to 363 (19U9). ^ L

J. C. Hubbs and J. Winocur, Bull. Am. Phys. Soc. [2] 3, 319 (1958). hfs,

Z E

B. R. Judd, Phys. Rev. 125, 6l3 to 625 (1962). Theory T, Z E

E. W. T. Richards and N. J. Atherton, United Kingdom, Atomic Energy

Research Establishment, AERE-R3851, 18 pp. (1962). W L, hfs 0.8^^ to 3.0//

A. Giacchetti, J, Opt. Soc. Am. 56, 653 to 657 (1966). T, Z E

M. Wilson, J. Opt. Soc. Am. 57, U29 to U30 (L) (1967). Theory

A. Giacchetti, J. Opt. Soc. Am.

M. Wilson, J. Opt. Soc. Am. 57,

M. Wilson, J. Opt. Soc. Am. 57,

Pa II

57, 728 to 733 (1967). T, C L, E D, hfs

h29 to U30 (L) (1967). Theory

Pa III

U29 to U30 (L) (1967). Theory

37
URANIUM (Z = 92)

U I

C. C. Kiess, C. J. Humphreys and D. D. Laun, J. Research Nat, Euro Std.

37, 1 to 16, RP1729 (19U6). I P, T, C L, Z E

PH. Schuurmans, J. C. van den Bosch and N. Dijkwel, Physica 13, 117 to

IhO (19U7). T, Z E ~

J. C. van den Bosch and G. J. van den Berg, Physica l5, 329 to 3^0 (19U9).

Z E, T, W L "~

J. R. McNally, Jr., J. Opt. Soc. Am. 39, 27l to 27U (19U9). I S

L. A. Korostyleva, A. R. Striganov a N. M. Yashkin, Zh, Exs. Teor. Fiz.,

U.S.S.R. 28, U7l to U79 (19^5). hfs, C L

A. R. Striganov a L. A. Korostyleva, Zh. Exs. Teor. Fiz., U.S.S.R. 29,

393 to U05 C19<5). IS

N. I. Kaliteevski a M. P. Chaika, Opt. i Spektr. 1, 809 to 811 (19^6).

hfs

N. P. Penkin a S. E. Frisch, Opt. i Spektr. 3, U73 to kl? (19^7). T, C L,

W L Emission, Absorption

L. Bovey and H. Wise, United Kingdom, Atomic Energy Research Establishment

AERE C/R2766, 199 pp. (1959). W L Emission, Absorption

L. A. Korostyleva a A. R. Striganov, Opt. i Spektr. 7, 137 to ll;0 (19^9).

I S, C L, W L

E. W. T. Richards and M. Do Crew, United Kingdom, Atomic Energy Research

Establishment AERE-R29U1, 202 pp. (1959). W L, C L, I S

N. Atherton and L. Bovey, United Kingdom, Atomic Energy Research Establishment AERE^R3226, 2h pp. (I960). W L, C L, I S 1/C to 2.5/^

R. Beer and L. Bovey, Proc. Phys. Soc. (London) 76, 569 to 57u (I960),

hfs, I S 1.6/ito 2ol/6

L. Bovey, N. Atherton, R. Beer and J. Ring, United Kingdom, Atomic Energy

Research Establishment AERE-R3398, 13 pp. (I960). Wave Number, I S,

hfs yu. to 3/^.

M. Diringer, Compt. Rend. 250, 828 to 833 (I960). I S, C L

E. A. Vernyi a V. N. Egorov, Opt. i Spektr. 9, 692 to 702 (I960). I S

L. Bovey, N. Atherton and E. B. M. Steers, Spectrochim. Acta 17, 259 to

278 (1961). W L, C L, I S ytto 2.^

38
URANIUM

U I - Continued

J. Blaise and M. Diringer, unpublished material (July 1962), T, IS

B. R. Judd, Phys. Rev. 125, 6l3 to 625 (1962). Theory T, Z E, E D

S. Held, Israel Atoirdc Energy Commission Report lA-81il, 1 to 38 (1963).

W L

P. R. Rao, Indian Acad. Sci. A^, 353 to 361 (1963). I S, T, C L

E. W. T. Richards, N, J. Atherton and E. B. M. Steers, United Kingdom,

Atomic Energy Research Establishment AERE-R3788, 37 pp. (1963). W L,

I S 0,8/OLto 2.S/C

J. v. Gagne', S. Gerstenkom et J. M. Helbert, Compt. Rend. 259 , 3U79 to

3li82 (196a). I S, C L

M. Diringer, Ann. de Phys. [13] 10, 89 to 120 (1965). I S, T, C L,

Theory

J.-M. Gagne", Can. J. Phys. UI4, U23 to U29 (1966). I S, C L

D. D. Laun, J. Research Nat. Bur. Std. TOA, 323 to 32I4 (1966). T, C L

B. Osman, These, Univ. Paris, 121; pp. (1966). T, C L, Z E, I S

D. W. Steinhaus, J. Blaise and M. Diringer, Los Alamos Sci. Lab.

LA-3U75, 187 pp. (1966). T, C L, I S

J. Blaise und A. Steudel, Zeit. Phys. 209, 311 to 328 (I968). I S

B. R. Judd, J. Opt. Soc. Am. 58, 1311 to 131? (L) (1968). E D, Theory

U II

PH. Schuurmans, Dissertation, Univ. Amsterdam, pp. 66 to 73 (N. V. NoordHollandsche Uitgevers Maatschappij , Amsterdam) (I9U6). T, Z K

PH. Schuurmans, Physica 11, Ul9 to U25 (19U6). T, Z E

PH. Schuurmans, J. C. van den Bosch and N. Dijkwel, Physica 13, 117 to

lUO (19U7). T, C L, Z E, W L

J. C. van den Bosch, Physica l5, 503 to 522 (19U9). T, C L
URANIUM

U II - Continued

J. C. van den Bosch and G. J. van den Berg, Physica l5, 329 to 350 (19U9).

Z E, T, W L ~

L. E. Burkhart, G. Stukenbroeker and S. Adams, Phys. Rev. 7?, 83 to 85

(19I49). IS ~

J. R. McNally, Jr., J. Opt, Soc. Am. 39, 2 7l to 2 7U (19 U9). I S

J. C. van den Bosch, Phys. Rev. 80, 100 (l) (1950). T

J. R. McNally, Jr., Phys. Rev. 77, Ul7 to iil8 (L) (1950). T

D. D. Smith, G. L. Stukenbroeker and J. R. McNally, Jr., Phys. Rev. 8U,

383 to 38ii (L) (1951). IS ~

L. A. Korostyleva, A, R. Striganov a N. M. Yashkin, Zh. Eks. Teor. Fiz.,

U.S.S.R. 28, 1^71 to U79 (1955). hfs, C L

A. R. Striganov a L. A. Korostyleva, Zh. Exs. Teor. Fiz., U.S.S.R. 29,

393 to li05 (1955). I S, C L

L. Bovey and H. Wise, United Kingdom, Atomic Energy Research Establishment AERE C/R2766, 199 pp. (19^9). 'W L Emission, Absorption

L. A. Korostyleva a G. A. Striganova, Opt. i Spektr. 7, 137 to ihO (1959).

I S, W L, C L

E. W. T. Richards and M. D. Crew, United Kingdom, Atomic Energy Research

Establishment AERE-R29lil, 202 pp. (1959). W L, I S

D. W. Steinhaus, J. Opt. Soc. Am. 50, 672 to 675 (I960). T

E. A. Vernyi a V. N. Egorov, Opt. i Spektr. 9, 692 to 702 (I960). I S

J. Sugar, J, Research Nat, Bur. Std, 66a , 321 to 32)4; and unpublished

material (1962). T

S. Held, Israel Atomic Energy Commission Report lA-8i4l, 1 to 30, 39

(1963). W L

M. Diringer, Ann. de Phys. [13] 10, 89 to 120 (1965). I S, T, C L,

Theory

B. Osman, These, Univ. Paris, 12U pp. (1966). T, C L, Z E, IS

J. Blaise, Colloq. de Sp, At., Caen (October I968). T, C L, Z E

J. Blaise und A, Steudel, Zeit. Phys. 209, 311 to 328 (I968). I S

UO
URANIUM

U IV

H. M. Crosswhite, NASA Doc. n63-17609, 35 pp. (1963). Theory Configuration

U VI

P. F. A. Klinkenberg, Physica 16, 185 to 19? (1950), T Theory

NEPTUl^IUM (Z = 93)

Np I

F. S. Tomkins and M. Fred, J. Opt. Soc. Am. 39, 357 to 363 (19U9). W L

J. C. Hubbs and R. Marrus, Phys. Rev. 110, 287 to 289 (L) (1958). hfs,

Z E Atomic Beam

L. Bovey, E. B. M. Steers and N. Atherton, IMited Kingdom, Atomic Energy

Research Establishment AERE-R2977 (1959). W L lA to 3/^

L. Bovey and E. B. M. Steers, Ifriited Kingdom, Atomic Energy Research

Establishment AERE-R3118, 5 pp. (1959). W L lya to 3/^

B. R. Judd, Phys. Rev. 125, 613 to 625 (1962). Theory T, Z E

M. Fred and F. S. Tomkins, J. Opt. Soc. Am. 53, 506 (A) (1963). Analysis

in progress

G. Smith, J. Opt. Soc. Am. 565 (A) (19614). Z E, hfs

PLUTONIUM (Z = 9h)

Pu I

F. S. Tomkins and M. Fred, J. Opt. Soc. Am. 39, 357 to 363 (19U9). W L

M. van den Berg and P. F. A. Klinkenberg, Physica 20, U6l to U80 (195U).

W L, hfs

Ul
PLUTONIUM

Pu I - Continued

J. G. Conway, J, Opt, Soc. Am. UU, 276 to 278 (195U). W L Furnace

Spectrum

L. Bovey, Spectrochim. Acta 10, 383 to 39h (1958). W L Emission and

Absorption

J. C. Hubbs, R. Marrus, W, A. Nierenberg and J. W. Worcester, Phys, Rev.

109 , 390 to 398 (1958). hfs, Z E Atomic Beam

L. Bovey, N. Atherton, R. Beer and J. Ring, United Kingdom, Atomic Energy

Research Establishment AERE-R3398, 13 pp. (I960). Wave Number, I S

1/^to 3/U

L. Bovey and H, Ridgeley, United Kingdom, Atomic Energy Research Establishment AERE-R3393, 13 pp. (I960). Z E, T, C L, hfs, I S

L. Bovey and E. B. M. Steers, Spectrochim. Acta 16, ll8U to 1199 (I960).

W L 1/Lto 2.5/6

S. Gerstenkom, Compt. Rend. 250, 825 to 827 (I960), hfs

J. R. McNally, Jr., Oak Ridge Nat. Lab. ORNL-215U Revised, 207 pp. (I960).

W L

L. Bovey and S. Gerstenkom, Jo Opt. Soc. Am. 5l, 522 to 525 (I96I). T,

Z B, W L, Intervals, hfs, IS

J. Blaise, M. Fred, S. Gerstenkom et B. R. Judd, Compt. Rend. 255, 2ii03

to 2U05 (1962). T, Z E, hfs, I S Ground Term

S. Gerstenkom, These, Ann. de Phys. [13] 7, 367 to UOU, Uo5 to UlU

(1962). T, C L, W L, hfs, I S

E. W. T. Richards, N. J. Atherton and E. B. M. Steers, United Kingdom,

Atomic Energy Research Establishment AERK-R3788, 37 pp. (1963). W L,

I S 0.8/^ to 2.5/^

J. Bauche, J. Blaise and M. Fred, J. Opt. Soc. Am. 565a (I96U). I P,

T, C L, Z E, W L, I S, hfs

J. Bauche and B. Judd, Proc. Phys. Soc. (London) 83, lU5 to l56 (196ii).

hfs Theory

L. A. Korostyleva, Opt. i Spektr. 17, U69 to h7h (196U). W L

E. W. T, Richards and A. Ridgeley, Spectrochim. Acta 21, 1UU9 to IU66

(1965). T, C L, Z E, I S, hfs

U2
PLUTONIUM

Pu I - Continued

M. Fred, J. Blaise and R. Gutmacher, J. Opt. Soc. Am. 56, 1U16a (1966).

T, C L, Z E, W L, I S, hfs

L. A. Korostyleva a A. R. Striganov., Opt, i Spektr. 20, 5U5 to 553

(1966). hfs, I S, W L, C L, G D

F. Tomkins et S. Gerstenkom, Gompt. Rend, 26 5B , 1311 to 1313 (1967). I S

J. Blaise und A. Steudel, Zeit, Phys. 209, 311 to 328 (1968). I S

Pu II

M. van den Berg and P. F. A, Klinkenberg, Physica 20, U6l to U80 (195U).

W L, hfs

J, G, Conway, J, Opt. Soc, Am. hh, 276 to 278 (195U). W L? Furnace

Spectrum

P. M. Griffin and J. R. McNally, Jr., J. Opt. Soc. Am. U5, 63 (L) (1955).

Z E

J. Haaland, Joint Est. Nuclear Energy Research, JENER Report No. 5l,

19 pp. (1957); See Chem. Abstr. 52, l753i (1958). W L

L. Bovey, Spectrochim. Acta 10, 383 to 39U (1958). W L Emission and

Absorption

J. R. McNally, Jr. and P. M. Griffin, J. Opt. Soc. Am. U9, l62 to 166

(1959). T, Z E

J. H. Wise, Bull. Am. Phys. Soc. [2] U, 262 (1959). T, Z E

J. R. McNally, Jr., Oak Ridge Nat. Lab. ORNL-215U Revised, 207 pp. (I960).

W L

8. Gerstenkom, Ann. de Phys. [13] 7, 397, U05 to hlh (1962). hfs, C L

B. R. Judd, Phys. Rev. 125, 6l3 to 625 (1962). Theory T, Z E

L. A. Korostyleva, Opt. i Spektr. 12, 671 to 676 (1962). hfs, W L

J. Bauche, J. Blaise et M. Fred, Compt. Rend. 256, 5091 to 5093 (1963).

T, Z E

U3
PLUTONIUM

Pu II - Continued

J. Bauche, J. Blaise and M. Fred, J. Opt, Soc, Am. 56 5A (I96I1). T,

C L, W L, Z E, I S, hfs

R.-J. Gharnpeau, J. de Phys. 25, 825 to 8 30 (I96U). hfs

L. A. Korostyleva, Opt. i Spektr. 17, U69 to U7U (I96U). W L

M. Fred, Jo Blaise and R. Gutmacher, J. Opt. Soc. Am, 56, IU16A (1966).

T, C L, W L, Z F., I S, hfs

L. A. Korostyleva a A. R. Striganov, Opt. i Spektr. 20, 19h to I96, 5U5

to 553 (1966). hfs, I S, W L, C L

J. Blaise und A. Steudel, Zeit. Phys. 209, 311 to 328 (I968). I S

Pu IV

B. G. "Wyboume, J. Ghem. Phys. 36, 2301 to 2311 (1962). Theory, f^ Terms

AMERICIUM (Z = 95)

Am I

F. S. Tomkins and M. Fred, J. Opt. Soc. Am. 39, 357 to 363 (19U9). W L

J. G. Gonway and R. D. McLaughlin, Phys. Rev. 9J4., U98 (L) (195U). I S,

W L

M. N. Oganov, A. P. Striganov a Yu. P. Sobolev, Opt. i Spektr. 1, 965 to

971 (1956). W L

M. Fred and F. S. Tomkins, J. Opt. Soc. Am. U7, 1076 to 1087 (1957). I P,

T, G L, hfs, IS

R. Beer and lo Bovey, Proc. Phys. Soc. (London) 76, 569 to 57U (I96O).

hfs, I S I06/6 to 2.1/66

hh
AMERICIUM

Am I - Continued

L. Bovey, N. Atherton, R. Beer and J, Ring, United Kingdom, Atomic Energy

Research Establishment AERE-R3398, 13 pp. (I960). Wave Number, C L,

hfs

R. Marrus, W. A. Nierenberg and J. Winocur, Phys. Rev, 120 , lU29 to lli35

(i960), hfs, Z E Atomic Beam

K. Krebs und R. Winkler, Zeit. Phys. l62, 235 to 2UU (1961). T, hfs

J. Bauche and B. R. Judd, Proc. Phys. Soc. (London) 83, lU5 to l56 (I96U).

hfs Theory

G. Smith, J. Opt. Soc. Am. 55, 937 to 939 (1965). Z E, hfs

L. Armstrong, Jr. and R. Marrus, Phys. Rev. 99h to 998 (I966). hfs,

Z E Atomic Beam

J. Blaise und A. Steudel, Zeit. Phys. 209, 311 to 328 (1968). I S

Am II

R. P. Thome, Spectrochim. Acta 8, 7l to 87 (1956). W L, hfs

M. Fred and F. S. Tomkins, J. Opt. Soc. Am. U7, 1076 to 1087 (1957). T,

C L, hfs, I S

L. Bovey,' Research (London) 13, h33 (I960), hfs

G. Smith, J. Opt. Soc. Am. 565 (A) (I96U). Z E, hfs

R. Winkler, Zeit. Phys. I8U, U33 to U50 (1965). hfs

J. Blaise und A. Steudel, Zeit. Phys. 209, 311 to 328 (I968). I S

Am III

R. Winkler, Zeit. Phys. I8U, ii33 to U50 (1965). hfs

U5
AMERICIUM

Am IV

J. B. Gruber and J. G. Gonvray, J. Chem. Phys. 3I4, 632 to 638 (I96I). T

Configuration Theory

S. Gerstenkom, Ann. de Phys, [13] 7, 393 (1962). B D

W. T. Camell, P. R. Fields and B. G. Wyboume, J. Chem. Phys. Ul, 219^

to 2196 (l) (I96U). Theory —

J. G. Conway and B. R. Judd, J. Chem. Phys. Ul, 1526 (l) (196U). Theory

CURIUM (Z = 96)

Cm I

J. G. Conway, M. F. Moore and W, W. T. Crane, J. Am. Chem. Soc. 73, I308

to 1309 (1951). W L

J. G. Conway and R. D. McLaughlin, J. Opt. Soco Am. U6, 91 to 93 (1956).

I S, W L

J. C. Hubbs, R. Marrus and J. Winocur, Phys. Rev. llU, 586 to 589 (1959).

Z E

B. R. Judd, Physo Rev. 125, 6l3 to 625 (1962). Theory T, Z E

E. F. Worden, R. G. Gutmacher, E. K. Hulet, J. G. Conway and M. Fred,

J. Opt. Soc. Am. 52, 1311 (A) (1962). Ground Term, Z E

J. G. Conway, unpublished material (I966); Program Atomic Sp. Symposium,

Nat. Bur. Std. , p. 17 (1967). T, C L, Vi L, Z E, I S

Cm. II

J. G. Conway, M. F. Moore and V\i. W. T. Crane, J. Am. Chem. Soc. 73, 1308

to 1309 (1951). W L

J. G. Conway, unpublished material (I966); Program Atomic Sp. Symposium,

Nat, Bur. Std., p. 17 (1967). T, C L, W L, Z E, I S

E. F. Worden and J. G. Conway, Physica 23, 27U (A) (1967). Ground Term,

Z E

U6
cmmA

Cm IV

B. G. Wyboui-ne, J. Ghem. PhySo UO, lh% to IhSl (L) (196U). Theory

BERKELIUM (Z = 9?)

Bk r

B. R. Judd, Physc Rev. 125, 6l3 to 625 (1962). Theory T, Z E

E. F. Worden, E. Ko Hulet, R. Lougheed and J. G. Conway, J. Opt, Soc. Am.

57, 550 (L) (1967). hfs

Bk II

R. G. Gutmacher, E. K. Hulet and R. Lougheed, J. Opt. Soc. f^m. 55, 1029

to 1030 (l) (1965). Sensitive Spark Lines

E. F. Worden, E. K. Hulet, R. Lougheed and J. G. Conway, J. Opt, Soc. Am.

57, 550 (L) (1967). hfs

CALIFORNIUTvI (Z = 98)

Cf I

J. G. Conway, E. K. Hulet and R. J. Morrow, J. Opt. Soc. Am. 52, 222 (L)

(1962). W L

Cf IV

E. G. liVybourne, J. Chem. Phys, 36, 2301 to 2311 (1962). Theory, f'^ Terms

U7
EINSTEINIUM (Z « 99)

Es I

B. R. Judd, Physo Rev. 125, 6X3 to 625 (1962). Theory T, Z E

E. F. Worden, R. G. Giitmacher, R. W, Lougheed, J. E. Evans and J. G.

Conway, J. Opt. Soc. Am. 58, 998 to 1000 (l) (1968). W L, hfs

Es II

R. G. Gutmacher, J. E. Evans and E. K. Hulet, J. Opt. Soc. Am. 57, 1389

to 1390 (L) (1967). Sensitive Spark Lines, hfs

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Reporting results of interest chiefly to the engineer

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of the new developments in instrumentation resulting

from the Bureau's work in physical measurement,

data processing, and development of test methods.

It will also cover some of the work in acoustics,

applied mechanics, building research, and cryogenic

engineering. Issued quarterly. Annual subscription:

Domestic, $5.00; foreign, $6.25*.

TECHNICAL NEWS BULLETIN

The best single source of information concerning the

Bureau's research, developmental, cooperative and

publication activities, this monthly publication is designed for the industry-oriented individual whose

daily vvork involves intimate contact with science and

technology

for engineers, chemists, physicists, re- search managers, product-development managers, and

company executives. Annual subscription: Domestic,

$3.00; foreign, $4.00*.

• Difference in price is due to extra cost of foreign mailing.

Order NBS publications from:

NONPERIODICALS

Applied Mathematics Series. Mathematical tables,

manuals, and studies.

Building Science Series. Research results, test methods, and performance criteria of building materials, components, systems, and structures. Handbooks. Recommended codes of engineering

and industrial practice (including safety codes) developed in cooperation with interested industries,

professional organizations, and regulatory bodies.

Special Publications. Proceedings of NBS conferences, bibliographies, annual reports, wall charts,

pamphlets, etc. Monographs. Major contributions to the technical

literature on various subjects related to the Bureau's

scientific and technical activities.

National Standard Reference Data Series.

NSRDS provides quantitive / data on the physical

and chemical properties of materials, compiled from

the world's literature and critically evaluated.

Product Standards. Provide requirements for sizes,

types, quality and methods for testing various industrial products. These standards are developed cooperatively with interested Government and industry groups

and provide the basis for common understanding of

product characteristics for both buyers and sellers. Their use is voluntary.

Technical Notes. This series consists of communications and reports (covering both other agency and

NBS-sponsored work) of limited or transitory interest.

Federal Information Processing Standards Publications. This series is the official publication within

the Federal Government for information on standards

adopted and promulgated under the Public Law

89—306, and Bureau of the Budget Circular A—86

entitled. Standardization of Data Elements and Codes

in Data Systems.

CLEARINGHOUSE

The Clearinghouse for Federal Scientific and

Technical Information, operated by NBS, supplies

unclassified information related to Government-generated science and technology in defense, space,

atomic energy, and other national programs. For

further information on Clearinghouse services, write:

Clearinghouse

U.S. Department of Commerce

Springfield, Virginia 22151

Superintendent of Documents

Government Printing Office

Washington, D.C. 20402
Unjted States

Government Printing Office

DIVISION OF PUBLIC DOCUMENTS

Washington. D.C. 20402

OFFICIAL BUSINESS

U.S. GOVERNMENT PRINTING OFFICE

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