Evaluation and testing of n + sup 239 Pu data for ENDF/B-VI in the keV and MeV energy region
Conference
·
OSTI ID:5832762
A new analysis of neutron-induced reactions on {sup 239}Pu above E{sub n} = 20 keV was performed as part of the evaluation activity for Version 6 of ENDF/B. This study merges results from a new theoretical analysis of n + {sup 239}Pu reactions with covariance analyses of experimental data for the {sup 239}Pu total and (n,f) cross sections and for the prompt fission neutron multiplicity. The results of this study are combined with a new analysis of the resolved and unresolved resonance regions of {sup 239}Pu to produce a new evaluation spanning the incident neutron energy range 10{sup {minus}5} eV to 20 MeV. Preliminary data testing calculations for several fast critical assemblies were performed in conjunction with the evaluation. 9 refs., 15 figs., 1 tab.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5832762
- Report Number(s):
- LA-UR-91-1373; CONF-910503--3; ON: DE91011417
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
653002* -- Nuclear Theory-- Nuclear Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BENCHMARKS
DATA
DATA COVARIANCES
ENERGY RANGE
EVALUATED DATA
EVALUATION
HADRON REACTIONS
INFORMATION
KEV RANGE
MEV RANGE
NEUTRON REACTIONS
NUCLEAR DATA COLLECTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PLUTONIUM 239 TARGET
TARGETS
TESTING
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BENCHMARKS
DATA
DATA COVARIANCES
ENERGY RANGE
EVALUATED DATA
EVALUATION
HADRON REACTIONS
INFORMATION
KEV RANGE
MEV RANGE
NEUTRON REACTIONS
NUCLEAR DATA COLLECTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PLUTONIUM 239 TARGET
TARGETS
TESTING