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Title: Refinements in the Los Alamos model of the prompt fission neutron spectrum

Journal Article · · Nuclear Physics. A
;

This paper presents a number of refinements to the original Los Alamos model of the prompt fission neutron spectrum and average prompt neutron multiplicity as derived in 1982. The four refinements are due to new measurements of the spectrum and related fission observables many of which were not available in 1982. Here, they are also due to a number of detailed studies and comparisons of the model with previous and present experimental results including not only the differential spectrum, but also integal cross sections measured in the field of the differential spectrum. The four refinements are (a) separate neutron contributions in binary fission, (b) departure from statistical equilibrium at scission, (c) fission-fragment nuclear level-density models, and (d) center-of-mass anisotropy. With these refinements, for the first time, good agreement has been obtained for both differential and integral measurements using the same Los Alamos model spectrum.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1326113
Alternate ID(s):
OSTI ID: 1325656
Report Number(s):
LA-UR-16-25265; S037594741630238X; PII: S037594741630238X
Journal Information:
Nuclear Physics. A, Journal Name: Nuclear Physics. A Vol. 957 Journal Issue: C; ISSN 0375-9474
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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