Ratio of the prompt fission neutron spectrum of /sup 239/Pu to that of /sup 235/U
Creators
- 1. Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan)
Description
The prompt fission neutron spectrum resulting from /sup 239/Pu fission induced by --0.55-MeV incident neutrons is measured from 1.0 to 10.0 MeV relative to that of /sup 235/U fission induced by the same incident energy neutrons. The measurements employ the time-of-flight technique. Energy-dependent ratios of the two spectra are deduced from the measured values. The experimentally derived ratio results are compared with those calculated from ENDF/B-V (revision 2) and with results of recent microscopic measurements. Using the ENDF/B-V /sup 235/U Watt parameters for the /sup 235/U spectrum, the experimental measurements imply a ratio of average fission spectrum energies of /sup 239/Pu//sup 235/U = 1.045 +- 0.003, compared to the value 1.046 calculated from ENDF/B-V (revision 2)
Additional details
Publishing Information
- Journal Title
- Nuclear Science and Engineering
- Journal Volume
- 97
- Journal Issue
- 3
- Series
- Nucl. Sci. Eng.
- Journal Page Range
- 235-238
- ISSN
- 0029-5639
- CODEN
- NSENA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 20001589
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S99: GENERAL AND MISCELLANEOUS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALGORITHMS; COMPARATIVE EVALUATIONS; DATA PROCESSING; ENERGY DEPENDENCE; EXPERIMENTAL DATA; FISSION NEUTRONS; FISSION RATIO; FISSION SPECTRA; NEUTRON SPECTRA; PLUTONIUM 239; PROMPT NEUTRONS; TIME-OF-FLIGHT METHOD; URANIUM 235
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; DATA; ELEMENTARY PARTICLES; EVALUATION; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; INFORMATION; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NEUTRONS; NUCLEI; NUCLEONS; NUMERICAL DATA; PLUTONIUM ISOTOPES; RADIOISOTOPES; SPECTRA; SPONTANEOUS FISSION RADIOISOTO; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES