科研之友
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摘要
The use of source and detector shields in active neutron interrogation can improve detector signal. In simulations, a shielded detector with a source rotated pi/3 rad relative to the opening decreased neutron flux roughly three orders of magnitude. Several realistic source and detector shield configurations were simulated. A layered design reduced neutron and secondary photon flux in the detector by approximately one order of magnitude for a deuterium-tritium source. The shield arrangement can be adapted for a portable, modular design.
- 出版日期2016-8
