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48-Cd-110 UA,ANL EVAL-AUG94 J.McCabe, A.B. Smith
DIST-JAN09 20090105
----JEFF-311 MATERIAL 4837
-----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 *************************
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** Original data taken from: JEFF-3.0 **
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***************************** JEFF-3.0 ***********************
DATA TAKEN FROM :- ENDF/B-VI rel.4 (DIST-APR95 REV3-AUG96)
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ENDF/B-VI MOD 4 Revision (R.Q. Wright, ORNL, July, 1995)
. File 1 comments added
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ENDF/B-VI MOD 3 (J. McCabe, A.B. Smith, J.W. Whalen, ANL,
August, 1994)
Comprehensive neutronic evaluated files for the naturally-
occurring isotopes of cadmium are deduced from the experimental
data and nuclear models. Particular attention is given to those
processes relevant to fuel-cycle and fisson-product applications.
Some discrepancies with the previous evaluation are very large
(e.g., as much as 100%), and the differences have the potential
for a pronounced effect on applications usage. The present files
are comprehensive, including many important processes that are
not represented in the previous evaluation. See Ref.1 for
complete documentation.
REFERENCE
1. J. McCabe, A.B. Smith, J.W. Whalen, Report ANL/NDM-129 (1993)
Argonne National Laboratory.
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ENDF/B-VI MOD 2 Revision (R.Q. Wright, ORNL, October, 1991)
ANS Transactions, volume 68, part A, page 468
Resolved resonance range (1.0E-5 eV to 7.1758 keV)
--------------------------------------------------
The MLBW formalism is used for this evaluation. The highest
energy resonance included is 9860 eV. The resolved resonance
parameters are taken from ref. 1 and from table 3 of ref. 2.
the upper limit of the resolved resonance range, 7175.8 eV is
the same as in the previous evaluation. This evaluation has 55
s-wave and 48 p-wave resonances including 11 s-wave resonances
above 7175.8 eV. The bound level at -110 eV has a gamma-n0 of
304.44 meV. Note that the ref. 1 reduced neutron width of the
bound level should be half the quoted value (302.5 mev), see
page d-2 of ref. 4. The calculated capture resonance integral
is 42 barns. In addition, one of the double entries of the 89.5
eV resonance should be deleted. The previous evaluation did not
have a bound level but used a 1/v cross section in file 3. In
the revised evaluation the bound level accounts for about 92
percent of the thermal capture cross section. The total cross
section at thermal is 29.24 barns.
Unresolved resonance range (7.1758 to 100 keV)
----------------------------------------------
The unresolved resonance range fit is based on the average
capture cross sections from ref. 3.
The unresolved resonance parameters are based on:
D0 = 155 eV, S0 = 0.5, S1 = 3.0, AND S2 = 1.0
D1 = 53.33 eV, SG0 = 4.58, SG1 = 15.0
File 3 changes:
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Total, elastic, and capture are set to zero in the resolved
and unresolved resonance ranges (1.0E-5 eV to 100 keV).
Cross sections are unchanged from the previous evaluation for
energies above 100 keV.
2200 m/s capture cross section, barns
(from resonance parameters) = 11.01
Computed resonance integral = 41.36
REFERENCES
1. S.F. Mughabghab, M. Divadeenam, and N.E. Holden, Neutron
Cross Sections, vol 1A, Academic Press, New York (1981).
2. Musgrove et al., Neutron-capture resonance parameters and
cross sections for the even-A isotopes of cadmium, J. of
Physics, part G 4 (5), 771 (1978).
3. Musgrove et al., 1978 Harwell Conf. on Neutron Physics and
Nucl. Data, table V, page 449. (1978). Values are mult. by
a factor of 0.9833 (see Nucl.Sci.Eng. 82, p. 230).
4. S.F. Mughabghab, Neutron Cross Sections, vol 1B, Academic
Press, New York (1984).
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ENDF/B-VI, MOD 0
The previous eval. was done by R. E. Schenter and F. Schmittroth
in April, 1974. It used the SLBW formalism in the resolved
resonance range but did not have unresolved resonance parameters.
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