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55-Cs-133 BNL,KAERI+ EVAL-AUG99 S.Y.Oh,S.Mughabghab,R.Schenter
DIST-JAN09 20090105
----JEFF-311 MATERIAL 5525
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
*************************** JEFF-3.1.1 *************************
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** Original data taken from: JEFF-3.1 **
** **
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***************************** JEFF-3.1 *************************
** **
** Original data taken from: JEFF-3.0 **
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***************************** JEFF-3.0 ***********************
DATA TAKEN FROM :- ENDF/B-VI rel.7 (DIST-APR00)
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ENDF/B-VI MOD 1 Evaluation, August 1999, S.Y. Oh (KAERI) and
S.F. Mughabghab (BNL)
Resonance parameters (MF=2) re-evaluated by S.Y.Oh and S.F.
Mughabghab (June 1999).
RESOLVED RESONANCES in MLBW
Calculated 2200 m/s cross sections and resonance integral
Cross Section (b) Res. Integral (b)*
Capture 29.0 421
Elastic 3.96
* Integrated from 0.5 eV to 100 keV with 1/E spectrum
In addition to Mughabghab [Mu1981], resonance parameter
measurements by Nakajima [Na1990], Macklin [Ma1982], and Popov
[Po1981] were incorporated.
Two bound level resonances were invoked to reproduce 2200 m/s
capture cross section [Mu1981], bound incoherent scattering
length of 2.61 fm [Gl1979], and bound coherent scattering length
of 5.42 fm [Ko1991].
Parameters that had not been determined from measurements;
radiative widths of 123 meV was given to s- and p-wave,
L was assigned by applying Bayesian approach, and
J was assigned randomly.
Effective scattering radius of 5.30 fm was adopted from
Mughabghab [Mu1981].
UNRESOLVED RESONANCES in 'all energy-dependent parameters' (LRF=2)
Average parameters:
S (10**4) (eV)* (meV)
s-wave 0.73 19.8 123
p-wave 1.40 10.6 123
d-wave 0.73 7.95 123
* Level spacing at the neutron separation energy of target+n.
and S0 were deduced from the fitting of reduced widths of
resolved resonances to the Porter-Thomas distribution.
S1 was adopted from systematics [Mu1984,Fig.4], and S2 was
assumed to be equal to S0.
Average parameters reproduce measured capture cross sections
by Bokhovko [Bo1991], Yamamuro [Ya1983] and Macklin [Ma1982].
Energy- and J-dependence of level spacing were calculated
according to the Gilbert-Cameron's level density formula with
associated parameters from Mughabghab [Mu1998a,Mu1998b].
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ENDF/B-VI MOD 0 Evaluation, January 1990, NNDC
ENDF/B-V MATERIAL CONVERTED TO ENDF-6 FORMAT BY NNDC
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ENDF/B-V Evaluation, November 1978, R. Schenter (HEDL), M. Bhat
and A. Prince (BNL)
HEDL EVAL-NOV78 SCHENTER,JOHNSON (FAST CAPTURE)
HEDL EVAL-NOV78 MANN,SCHMITTROTH (FAST CAPTURE)
BNL EVAL-OCT71 BHAT,PRINCE (ENDF/B-IV)
RCN EVAL-APR78 GRUPPELAAR (FAST CAPTURE)
DATA
2200 m/sec capture 29.6b
MT=1 MeV total cross-section, data of Foster [Fo1971]
MT=16 (n,2n) Data 1.620 b at 14.8 MeV by Qaim (see above) and
1.598 b at 14.6 MeV by Nagel [Na1965]. A mean of these two
values used for normalization.
MT=102 keV capture HEDL reevaluation 11/78 3 keV to 20 MeV
MT=103 (n,p) Data 0.0105 b at 14.8 MeV by Qaim.
MT=107 (n,alpha) Data 1.14E-3 b at 14.8 MeV by Qaim and 1.96E-3
b at 14.4 MeV by Fink [Lu1970].
NUCLEAR MODEL CALCULATIONS
Optical Model parameters: Wilmore-Hodgson parameters, Hodgson
[Ho1967] R0 = 1.26 fm
Codes used
1. ABACUS-NEARREX: P. Moldauer (private communication)
Total and shape-elastic cross-sections
2. COMMNUC: Dunford [Du1970]
Compound nucleus reaction cross-sections
3. THRESH: S.Pearlstein (to be published). (n,2n), (n,p),
(n,alpha) cross-sections. Threshold energies based on
latest data of Wapstra and Gove used by Howerton [Ho1970]
4. CHAD: Berland [Be1968a]. Angular distribution data.
5. FISPRO: Benzi [Be1968b] Direct capture
Nuclear temperature calculations based on Gilbert [Gi1965].
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REFERENCES
[Be1968a] R.F. Berland, Atomics Int. report NAA-SR-11231 (1965)
[Be1968b] V. Benzi, G.C. Panina and G. Reffo, report CEC(69)24
(1968)
[Bo1991] M.V. Bokhovko, V.N. Kononov, E.D. Poletaev et al.,
Nuclear Data for Sci. Technol., Proc.Int.Conf. Juelich, May
1991 (Springer-Verlag, 1992) p.62
[Du1970] C.L. Dunford, Atomics International report AI-AEC-12931
(1970)
[Fi1970] Wen-deh Lu, N. RanaKumar, R.W. Fink, Phys.Rev.C 1, 358
(1970)
[Fo1971] D.G. Foster Jr. and D.W. Glasgow, Phys.Rev.C 3, 576
(1971)
[Gi1965] A. Gilbert and A.G.W. Cameron, Can.J.Phys. 43, 1446
(1965)
[Gl1979] H. Glaettli, G.L. Bacchella, M. Fourmond et al., J. de
Physique 40, 629 (1979)
[Ho1967] P.E. Hodgson, Ann.Rev.Nucl.Sci. 17, 1 (1967)
[Ho1970] R.J. Howerton, UCRL-50400, Vol.9 (1970)
[Ko1991] L. Koester, H. Rausch and E. Seymann, At.Data Nucl.Data
Tables 49, 65 (1991)
[Ma1982] R.L. Macklin, Nucl.Sci.Eng. 81, 418 (1982)
[Mu1981] S.F. Mughabghab et al., Neutron Cross Sections, Vol.1,
Part A (Academic Press, 1981)
[Mu1984] S.F. Mughabghab, Neutron Cross Sections, Vol.1, Part B,
(Academic Press, 1984)
[Mu1998a] Mughabghab,S.F. and Dunford,C.L., Proc.Int.Conf. on
Phys.of Nucl.Sci.Technol.,p.784,Long Island,Oct.5-8,1998.
[Mu1998b] S.F. Mughabghab and C.L. Dunford, Phys.Rev.Lett. 81,
4083 (1998)
[Na1965] W. Nagel and A.H.W. Aten Jr., Physica 31, 1091 (1965)
[Na1990] Y. Nakajima, M. Ohkubo, M. Sugimoto et al., Ann.Nucl.
Energy 17, 569 (1990)
[Po1981] A.B. Popov and K. Tzeciak, JINR report P3-81-721 (1981)
[Ya1983] N. Yamamuro, M. Igashira, M. Sekiya and H. Shirayanagi,
J.Nucl.Sci.Technol. 20, 797 (1983)
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