| γ能谱Compton抑制的MCNP模拟 |
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| 引用本文： | 刘珉强,杜川华,马玉刚.γ能谱Compton抑制的MCNP模拟[J].吉林大学学报(理学版),2019,57(4):947. |
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| 作者姓名： | 刘珉强 杜川华 马玉刚 |
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| 作者单位： | 中国工程物理研究院电子工程研究所,四川绵阳,621000;吉林大学物理学院,长春,130012 |
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| 基金项目： | 装备预研项目;装备预研项目 |
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| 摘 要： | 用Monte Carlo程序(MCNP)模拟主探头外包NaI(Tl)晶体构成阱型反Compton谱仪的输出谱. 通过调整FU卡参数, 实现对外探测器中脉冲高度的筛选, 给出反Compton抑制谱和Compton电子谱, 验证MCNP的FU卡在反符合测量中的使用方法, 并分析外探测器厚度对反Compton谱的影响.
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| 关 键 词： | Monte Carlo模拟 Compton抑制 外探测器厚度 |
| 收稿时间： | 2018-04-17 |
MCNP Simulation of Compton Suppression in γ Energy Spectrum |
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| LIU Minqiang,DU Chuanhua,MA Yugang.MCNP Simulation of Compton Suppression in γ Energy Spectrum[J].Journal of Jilin University: Sci Ed,2019,57(4):947. |
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| Authors: | LIU Minqiang DU Chuanhua MA Yugang |
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| Institution: | 1. Institute of Electrical Engineering, China Academy of Engineering Physics, Mianyang 621000, Sichuan Province, China； 2. College of Physics, Jilin University, Changchun 130012, China
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| Abstract: | Monte Carlo program was used to simulate the output spectrum of a well type anti Compton spectrometer with the main probe wrapped with NaI(Tl) crystal. We gave the anti Compton suppression spectrum and Compton electron spectrum by adjusting the parameters of the FU card to screen the pulse height of the external detector. The usage method of FU card
of MCNP in anti coincidence measurement was verified, and the effect of the thickness of external detector on anti Compton spectrum was analyzed. |
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| Keywords: | Monte Carlo simulation Compton suppression thickness of external detector |
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