Multi-layer boron thin-film detectors for neutrons
- Los Alamos National Laboratory
Intrinsic efficiencies of the multilayer boron detectors have been examined both theoretically and experimentally. It is shown that due to the charge loss in the boron layers, the practical efficiencies of most multi-layer {sup 10}B detectors are limited up to about 42%, much less than 77% of the 2 bar 2-inch diameter {sup 3}He detectors. It is suggested that the same charge loss mechanism will prevent essentially all substrate-based boron detectors from ever reaching the efficiencies of high-pressure {sup 3}He tubes, independent of the substrate geometry and material composition (including silicon). Meanwhile, the experimental data indicate that the multi-layer approach can increase the efficiencies up to the theoretical limit. Good n/{gamma} discrimination has also achieved using the ionization charnber technique.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 993112
- Report Number(s):
- LA-UR-10-01382; LA-UR-10-1382; TRN: US1007968
- Resource Relation:
- Journal Volume: 652; Journal Issue: 1; Conference: SORMA 2010 ; May 25, 2010 ; Ann Arbor, MI
- Country of Publication:
- United States
- Language:
- English
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