Evaluation of the fission and capture cross sections of ²⁴⁰Pu; and ²⁴¹Pu for ENDF/B-V. [10/sup -5/ eV to 20 MeV]

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5696900

Weston, L. W.; Wright, R. Q.

Since there were appreciable new data which were not available for ENDF/B-IV, new evaluations for /sup 240/Pu and /sup 241/Pu were carried out for ENDF/B-V. The evaluation of the fission and capture cross sections is reviewed and problem areas are discussed. The neutron energy range of concern was from 10/sup -5/ eV to 20 MeV. Significant changes were made over the entire neutron energy region because of the new experimental data available. The problems in the evaluations due to discrepancies in the nuclear data are emphasized, particularly the 1-eV resonance in /sup 240/Pu and the 0.3-eV resonance in /sup 241/Pu. The evaluation of the fission and capture cross sections for ENDF/B-V represents an improvement over the previous evaluation; however, there continues to be a need for accurate experimental data. 7 figures.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5696900
• Report Number(s): CONF-791058--37
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CAPTURE
COLD NEUTRONS
CROSS SECTIONS
DATA
DATA FORMS
ELEMENTARY PARTICLES
ENERGY RANGE
EPITHERMAL NEUTRONS
EV RANGE
EVALUATED DATA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITATION FUNCTIONS
FAST NEUTRONS
FERMIONS
FISSION
GRAPHS
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
INFORMATION
INTERMEDIATE NEUTRONS
ISOTOPES
KEV RANGE
MEV RANGE
MILLI EV RANGE
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
PLUTONIUM 240 TARGET
PLUTONIUM 241
PLUTONIUM 241 TARGET
PLUTONIUM 242
PLUTONIUM ISOTOPES
RADIOISOTOPES
TARGETS
THERMAL NEUTRONS
YEARS LIVING RADIOISOTOPES