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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引用本文: | 陈永浩,雷家荣,张小东,安力,郑普,王新华,朱传新,何铁.Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector[J].中国物理 C,2013,37(4):75-78. |
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作者姓名: | 陈永浩 雷家荣 张小东 安力 郑普 王新华 朱传新 何铁 |
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作者单位: | 1 Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang 621900, China;;2 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China |
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摘 要: | 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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关 键 词: | n-γ discrimination BC501A liquid scintillator neutron energy spectrum |
收稿时间: | 2012-5-23 |
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