THE n,2n CROSS-SECTIONS OF U$sup 238$ AND Th$sup 232$ FOR 14 MEV NEUTRONS
Technical Report
·
OSTI ID:4841914
The n,2n cross-sections of U/sup 238/ and Th/sup 232/ were determined for 14-Mev neutrons. Gram quantities of these isotopes were irradiated in a known 14-Mev neutron flux until sufficient activation was produced. The amounts of U/sup 237/ and Th/sup 231/ formed were measured by counting low energy gamma - rays emitted by these isotopes using Xe- and Kr-filled proportional counters. During this work, a gamma -ray from the decay of Th/sup 231/ was found at 25.6 plus or minus 0.1 kev, this gamma having been previously reported at 22 kev. The intensity of this gamma , and the type of transition giving rise to it, were determined. (auth)
- Research Organization:
- United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England
- NSA Number:
- NSA-15-029990
- OSTI ID:
- 4841914
- Report Number(s):
- AERE-NP/R-2033
- Country of Publication:
- United Kingdom
- Language:
- English
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