Study of n-γ discrimination for 0.4-1 MeV neutrons using the zero-crossing method with a BC501A liquid scintillation detector
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 w...
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| Published in | Chinese physics C Vol. 37; no. 4; pp. 69 - 72 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.04.2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1137 0254-3052 |
| DOI | 10.1088/1674-1137/37/4/046202 |
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| 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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| AbstractList | 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. An experimental system aimed at n- gamma discrimination using the zero-crossing method with a phi 3" x 2" BC501A liquid scintillation detector was established and tested with an Am-Be neutron source. Two-dimensional x plots of energy versus zero-crossing time were obtained. The quality of n- gamma discrimination was checked by the figureof-merit (FOM), the neutron peak-to-valley ratio, and the proportion of leaked neutrons over all neutron events. The performance of n- gamma discrimination in terms of FOM was compared with previous work done by other groups. The n- gamma discrimination in four dfferent 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- gamma discrimination threshold can go down to 0.4 MeV. |
| Author | 陈永浩 雷家荣 张小东 安力 郑普 王新华 朱传新 何铁 |
| AuthorAffiliation | Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang 621900, China School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China |
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| Cites_doi | 10.1007/s11433-010-4036-8 10.1016/j.nima.2010.06.252 10.1016/S0168-9002(01)01428-0 10.1016/j.nima.2007.11.013 10.1016/0029-554X(71)90054-1 10.1016/j.apradiso.2009.05.020 10.1016/0029-554X(74)90578-3 10.1016/j.nima.2008.09.017 10.1016/0168-9002(95)00037-2 10.1016/S0168-9002(01)01410-3 10.1016/0168-9002(94)91169-X |
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| DocumentTitleAlternate | 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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| Notes | 11-5641/O4 n-γ discrimination； BC501A liquid scintillator； neutron energy spectrum 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. CHEN Yong-Hao ,LEI Jia-Rong , ZHANG Xiao-Dong , AN Li ,ZHENG Pu ,WANG Xin-Hua , ZHU Chuan-Xin ,HE Tie （ 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） ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
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| SubjectTerms | Detectors Discrimination Intervals Liquids MeV Neutron sources Scintillation Thresholds Two dimensional 中子源 交叉法 品质因数 实验系统 时间间隔 检测器 液体闪烁探测器 |
| Title | 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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