Neutron total cross section of /sup 240/Pu below 6 eV and the parameters of the 1. 0-eV resonance

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5463233

Spencer, R R; Harvey, J A; Hill, N W; Weston, L W

Measurements of the low-energy neutron transmission of five different /sup 240/Pu samples have been made using the Oak Ridge Electron Linear Accelerator (ORELA) pulsed-neutron source and the time-of-flight technique in an attempt to resolve discrepancies between the evaluated low-energy cross section of this nuclide and the observed production of heavier Pu isotopes in light-water reactors (LWRs). Three ''thin'' samples consisting of Pu metal foils containing 0.73 at. % /sup 240/Pu were measured above 0.4 eV in order to derive the parameters of the 1.056-eV resonance, which is responsible for most of the observed 2200-m/s cross section. Two ''thick'' samples of 99.97 at. % /sup 240/Pu metal were measured from 0.003 eV to about 6 eV to obtain the 2200-m/s cross section and the cross-section shape in the low-energy region. A consistent set of resonance parameters was derived from the above data sets.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5463233
• Report Number(s): CONF-850507-51; ON: DE85016158
• Country of Publication: United States
• Language: English

Related Subjects

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Light-Water Moderated
Nonboiling Water Cooled
ACCELERATORS
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ALPHA DECAY RADIOISOTOPES
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LINEAR ACCELERATORS
NUCLEI
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PLUTONIUM 241
PLUTONIUM ISOTOPES
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