Nuclear Data Section
International Atomic Energy Agency
P.O.Box 100, A-1400 Vienna, Austria
Memo CP-D/703 (Rev.2)

Date:
To:
From:

2 April 2012
Distribution
N. Otsuka, S.P. Simakov

Subject:

Compilation of nuclear resonance fluorescence (NRF) data

Nuclear resonance fluorescence (NRF) is a process of excitation of a specificresonance in nucleus (so called scissor dipole mode in deformed nuclei) by photon
and having that state decay by prompt emission of gamma-ray to the ground or
excited states.
First time such resonances in the actinide nuclei (238U and 232Th) were experimentallyobserved at excitation energies around 2 MeV by R.D. Heil and co-workers [1]. Due
to small width and dependence of resonance energy on nucleus it was recently
recognised that NFR could be used as a novel nondestructive method for detecting
clandestine nuclear, toxic and explosive materials [2,3]. This stimulated a series of
new measurements for actinides employing Bremsstrahlung (BRST) and Laser
Compton back scattering (LCS) photon sources (see the survey of publishedexperiments in Table below).
The energy integrated cross sections (some time denoted in publications as I i ),usually measured in experiment, is given by:2 πc  Γ0 Γi
2Ji + 1
 g 2 , where statisctical factor g =σ (E x , Ei ) = 2 2(2 J 0 + 1)
 E x  Γtot
J 0 and J i - spins of the ground and excited states,
Γ 0 and Γ i : - gamma decay widths ground and excited states and Γ tot is asum of all them,E x = resonance (incident gamma) energy,
E γ = E x - E i – energy of decay gamma leading to the population of the i-thexcited state.

The quantities reported by these experiments are (1) the energy integrated crosssection (in units b-eV) corresponding to the emission of photon with energy E γ andfeeding the i-th excited state and/or (2) deduced from integrated cross sections thetransition width Γ 0 Γ i /Γ tot or Γ 0 (in units meV):2 πc  Γ0 Γi
 gσ (E x , Ei ) = 2 E γ  Γtot
Γ0 Γior Γ 0Γtot(1)(2)

These quantities can be coded by REACTION codes in accordance with the current
coding rule, e.g. for 235U:(92-U-235(G,SCT),PAR,ARE) or 92-U-235(G,EL),,ARE)

for (1)((92-U-235(G,EL),,WID)*(92-U-235(G,INL),PAR,WID))/(92-U-235(G,TOT),,WID)) or (92-U-235(G,EL),,WID)

for (2)The incident photon energy should be coded as the end-point photon energy EN-RESMAX (in the case of Bremsstrahlung source) or as resonance energy EN-RES (in thecase of Laser Compton scattering source) and detected de-excitation (transition)
photon energy under E.
The articles reporting these quantities are identified by NDS and summarized in thetable.
References
1. R.D. Heil, H.H. Pitz, U.E.P. Berg et al., Observation of orbital magnetic dipole
strength in the actinide nuclei 232Th and 238U, Nucl. Phys. A476 (1988) 39
2. W. Bertozzi S.E. Korbly et al., Nucl. Instrum. and Meth. B 61 (2007) 33
3. T. Hayakawa et al., Nucl. Instrum. Meth. A621 (2010) 695

Addendum (2012-04-02)
All articles tabultaed in this memo have been already compiled.
Distribution:
blokhin@ippe.ru
chiba@earth.sgu.ac.jp
claes.nordborg@oecd.org
dbrown@bnl.gov
emmeric.dupont@oecd.org
ganesan@barc.gov.in
gezg@ciae.ac.cn
hongwei@ciae.ac.cn
jhchang@kaeri.re.kr
kaltchenko@kinr.kiev.ua
katakura.junichi@jaea.go.jp
kato@nucl.sci.hokudai.ac.jp
kiralyb@atomki.hu
l.vrapcenjak@iaea.org
manuel.bossant@oecd.org
manokhin@ippe.ru
mmarina@ippe.ru
mwherman@bnl.gov
nicolas.soppera@oecd.org
nklimova@kinr.kiev.ua

n.otsuka@iaea.org
nrdc@jcprg.org
oblozinsky@bnl.gov
ogritzay@kinr.kiev.ua
otto.schwerer@aon.at
pronyaev@ippe.ru
r.forrest@iaea.org
samaev@obninsk.ru
s.babykina@polyn.kiae.su
scyang@kaeri.re.kr
s.simakov@iaea.org
stakacs@atomki.hu
stanislav.hlavac@savba.sk
taova@expd.vniief.ru
tarkanyi@atomki.hu
varlamov@depni.sinp.msu.ru
vlasov@kinr.kiev.ua
vmclane@optonline.net
v.zerkin@iaea.org
yolee@kaeri.re.

Experimental nuclear resonance fluorescence data for actinide(Update: 2012-04-02)
Targ.

Proj.

γ-source

Eres,min(MeV)

Eres,maxLab.
(MeV)

AuthorPublication

U238U236gg

BRST
BRST

2.043
1.791

2.468
3.143

2GERIFS
2GERIFS

R.D. Heil+
J. Margraf+

J,NP/A
J,PR/C

476
4239771

U235

g

BRST

1.782

1.846

2GERIFS

A. Zilges+

J,PR/C

52

U235

g

BRST

1.687

1.862

2GERTHDO. Yevetska+

J,PR/C

U235

g

BRST

1.656

2.006

1USAMITW. Bertozzi+

Pu239

g

BRST

2.040

2.471

1USAMIT

Mn55g

BRST

1.884

1USAMIT

Np237 gTh232 g
U235g

BRST
LCS
LCS

1.698
2.044
1.656

1USAMIT
1USATNL
1USATNL

2.506
4.002
2.755

Vol

Page

YearSource

EntryCentre

1988 Table
1990 Table

G0028.005-007
G0027.002-004

NDS
NDS468

1995 Table

G0026.002-004

NDS81044309

2010 Table

G0024.002-003

NDS

J,PR/C

78041601

2008 Table

L0139.002

NNDC

W. Bertozzi+

J,PR/C78

041601

2008 Table

L0139.003

NNDC

W. Bertozzi+

J,PR/C78

041601

2008 Table

L0139.004

NNDC

C.T. Angell+
A.S. Adekola+
E. Kwan+

J,PR/C
J,PR/C
J,PR/C8283
83054310034615041601

2010 Table
2011 Table
2011 Table

L0155.002
L0159.002
L0161.002-004

NNDCNNDC
NNDC