Title :
A method for comparing degradation of boron trifluoride and helium detectors in neutron and gamma fields
Author :
Qian, T. ; Tonner, P. ; Keller, N. ; Buyers, W.J.L.
Author_Institution :
Atomic Energy of Canada Ltd., Ottawa, Ont., Canada
fDate :
6/1/1998 12:00:00 AM
Abstract :
A method developed to measure the degradation of neutron detectors in neutron and gamma fields has been applied to five models of boron trifluoride (BF3) detectors from major suppliers, and to a special helium (3He) detector model. The detectors tested all have about the same nominal neutron sensitivity and overall dimensions. The showed widely different neutron and gamma durability for BF3 models, an undesirable time-dependent gamma degradation followed by recovery for some BF3, models, and very robust performance of the modified 3He detector
Keywords :
boron compounds; fission reactor instrumentation; gamma-ray effects; helium-3 counters; neutron effects; solid scintillation detectors; BF3; He; boron trifluoride; gamma durability; gamma fields; helium detectors; modified 3He detector; neutron durability; neutron fields; nominal neutron sensitivity; undesirable time-dependent gamma degradation; Boron; Councils; Gamma ray detection; Gamma ray detectors; Helium; Neutrons; Pulse measurements; Rivers; Testing; Thermal degradation;
Journal_Title :
Nuclear Science, IEEE Transactions on
