A FAST-NEUTRON ACTIVATION DETECTOR FOR 14-Mev PULSED NEUTRON SOURCES
Technical Report
·
OSTI ID:4818996
A fast-neutron activation detector is described in which the gamma rays resulting from the decay of Pb/sup 207m/ are observed in a plastic scintillator. The Pb/sup 207m/ produced by fast-neutron activation of a lead shield which surrounds the scintillator and photomultiplier. Following a 20-msec delay from the neutron pulse, the Pb/sup 207m/ activity is observed for 2.40 sec. A source of Ba/sup 133/ is used to check the gain stability of the detection system. The detector is observed to have somewhat higher sensitivity than a standard silver activation detector. (auth)
- Research Organization:
- California. Univ., Berkeley. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-16-001950
- OSTI ID:
- 4818996
- Report Number(s):
- UCRL-9861
- Country of Publication:
- United States
- Language:
- English
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