Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector

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CHEN Yong-Hao, LEI Jia-Rong, ZHANG Xiao-Dong, AN Li, ZHENG Pu, WANG Xin-Hua, ZHU Chuan-Xin and HE Tie. Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector[J]. Chinese Physics C, 2013, 37(4): 046202. doi: 10.1088/1674-1137/37/4/046202
CHEN Yong-Hao, LEI Jia-Rong, ZHANG Xiao-Dong, AN Li, ZHENG Pu, WANG Xin-Hua, ZHU Chuan-Xin and HE Tie. Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector[J]. Chinese Physics C, 2013, 37(4): 046202.  doi: 10.1088/1674-1137/37/4/046202 shu
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Received: 2012-05-23
Revised: 1900-01-01
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Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector

    Corresponding author: AN Li,

Abstract: An experimental system aimed at n-γ discrimination using the zero-crossing method with a φ3"× 2" BC501A liquid scintillation detector was established and tested with an Am-Be neutron source. Two-dimensional plots of energy versus zero-crossing time were obtained. The quality of n-γ discrimination was checked by the figure-of-merit (FOM), the neutron peak-to-valley ratio, and the proportion of leaked neutrons over all neutron events. The performance of n-γ discrimination in terms of FOM was compared with previous work done by other groups. The n-γ discrimination in four different energy regions with an interval of 0.1 MeV between 0.3 MeV and 0.7 MeV was studied, and the results indicate that the n-γ discrimination threshold can go down to 0.4 MeV.

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