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BETA-GAMMA DELAYED COINCIDENCE METHOD FOR RESONANCE ESCAPE MEASUREMENTS

Journal Article · · Nuclear Sci. and Eng.
OSTI ID:4061015
The Np/sup 239/ - Pu/sup 239/ decay, resulting from neutron captu re in U/sup 238/ may be identified by measurements of delayed beta - gamma coincidence. The method makes use of the fact that about half the beta decays of Np/sup 239/ feed a gamma -emitting state of 0.193 mu sec half life. In principle, a beta - gamma coincidence measurement is made after first delaying the arrival of the beta pulse at the coincidence circuit for a time sufficiently long to reject similar beta - gamma events among fission products having half lives shorter than the desired state, prompt beta - gamma events, and false prompt coincidences caused by bremsstrahlung and related events. Advantages and disadvantages are given for this method. (N.W.R.)
Research Organization:
Atomics International, Canoga Park, Calif.
NSA Number:
NSA-15-014485
OSTI ID:
4061015
Journal Information:
Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 9
Country of Publication:
Country unknown/Code not available
Language:
English

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