| 中子元素分析中干扰γ射线屏蔽研究 |
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| 引用本文： | 吕俊涛,魏晓云,谷德山,程道文,王新,贺平,刘林茂.中子元素分析中干扰γ射线屏蔽研究[J].东北师大学报(自然科学版),2009,41(4). |
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| 作者姓名： | 吕俊涛 魏晓云 谷德山 程道文 王新 贺平 刘林茂 |
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| 作者单位： | 1. 浙江大学工业控制技术国家重点实验室,浙江,杭州,310027;大庆油田有限公司测试分公司,黑龙江,大庆,163453
2. 东北师范大学辐射技术研究所,吉林,长春,130024 |
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| 基金项目： | 吉林省科技发展计划项目 |
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| 摘 要： | 用中子发生器做中子源进行元素分析时,在辐照所测元素的同时,中子发生器组成材料、中子防护材料及探测γ射线装置都产生相应的γ射线,这些γ射线会对实际测量元素产生干扰.通过在中子发生器和探测器之间加铅可以屏蔽来自中子发生器一侧的γ射线.实验表明:当铅层厚度为80 mm时屏蔽效果最佳;用中子进行含C,H和O等元素的分析时,加铅层提高了测量精度.
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| 关 键 词： | 中子 元素分析 γ射线 屏蔽 γ-ray |
Study on the shielding of interferential gamma-rays in neutron element analysis |
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| LU Jun-tao,WEI Xiao-yun,GU De-shan,CHENG Dao-wen,WANG Xin,He Ping,LIU Lin-mao.Study on the shielding of interferential gamma-rays in neutron element analysis[J].Journal of Northeast Normal University (Natural Science Edition),2009,41(4). |
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| Authors: | LU Jun-tao WEI Xiao-yun GU De-shan CHENG Dao-wen WANG Xin He Ping LIU Lin-mao |
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| Institution: | LU Jun-tao1,2,WEI Xiao-yun3,GU De-shan3,CHENG Dao-wen3,WANG Xin3,He Ping3,LIU Lin-mao3(1.State Key Laboratory of Industral Control Technology,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | The neutron can initiate interactions with the samples and other materials of the experimental device when analyzing the chemical elements with the neutron generator.These gamma-rays emitted by the materials interrupt the process of detecting the gamma-rays emitted by the samples.The gamma-rays from the neutron generator direction are shielded by changing the Pb thickness between the neutron generator and the detector.The result shows that the proper Pb thickness is 80 mm.It is helpful to analyze the chemic... |
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| Keywords: | neutron element analysis shielding |
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