Neutron total cross-section measurement of thorium near 24 keV with an iron-filtered neutron beam

Journal Article · Wed Feb 01 04:00:00 EST 1978 · Nucl. Sci. Eng.; (United States)

OSTI ID:5134253

Kobayashi, K ^[1]; Fujita, Y; Oosaki, T; Block, R C

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1. Kyoto Univ.

The neutron average total cross section of thorium has been measured near 24 keV in an accurate transmission experiment using the time-of-flight method and the iron-filtered-beam technique. The measured average total cross section is 14.933 +- 0.041 b. The computer codes BABEL and MCROSS were used to stochastically calculate average cross sections near 24 keV from several sets of resonance parameters. The average total cross section calculated from the Forman et al. data set is in good agreement with the experimental results, but the cross section calculated from the ENDF/B-IV data set is 16% lower than the measured value. The major part of this 16% discrepancy is attributed to too small a nuclear scattering radius in the ENDF/B-IV data set.

• OSTI ID: 5134253
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 65:2; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
CROSS SECTIONS
ENERGY RANGE
HADRON REACTIONS
KEV RANGE
KEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
TARGETS
THORIUM 232 TARGET
TOTAL CROSS SECTIONS
TRANSMISSION