Neutron fission cross sections of /sup 239/Pu and /sup 240/Pu relative to /sup 235/U

Journal Article · Fri Jul 01 00:00:00 EDT 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:5517498

Weston, L W; Todd, J H

The ratios of the neutron fission cross sections sigma /SUB f/ (/sup 240/Pu)/sigma /SUB f/ (/sup 239/Pu), sigma /SUB f/ (/sup 240/Pu)/ sigma /SUB f/ (/sup 235/U), and sigma /SUB f/ (/sup 239/Pu)/sigma /SUB f/ (/sup 235/U) have been measured simultaneously with a multiplate ionization fission chamber using the Oak Ridge Electron Linear Accelerator as a neutron source over the neutron energy range from 5 keV to 20 MeV. The /sup 240/Pu ratio data are in overall agreement with ENDF/B-V with exceptions in relatively narrow neutron energy regions. Below 150 keV and from 10 to 20 MeV, the present /sup 239/Pu//sup 235/U fission ratios indicate significant discrepancies when compared to ENDF/B-V. These ratios are important for thermal and fast reactor applications.

• Research Organization: Oak Ridge National Laboratory, Bldg. 6010, P.O. Box X, Oak Ridge, Tennessee 37830
• OSTI ID: 5517498
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 84:3; ISSN NSENA
• Country of Publication: United States
• Language: English

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ACCELERATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
CROSS SECTIONS
ENERGY RANGE
EPITHERMAL REACTORS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FAST REACTORS
FISSION
HADRON REACTIONS
HEAVY NUCLEI
IONIZATION CHAMBERS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MINUTES LIVING RADIOISOTOPES
NEUTRON REACTIONS
NEUTRON SOURCES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ORELA
PARTICLE SOURCES
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
REACTORS
THERMAL REACTORS
URANIUM 235
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YEARS LIVING RADIOISOTOPES