环境监测中伽马谱分块计数法探测异常放射性

辐射防护通讯 ›› 2020, Vol. 40 ›› Issue (2): 1-5.

• 研究通报 • 下一篇

环境监测中伽马谱分块计数法探测异常放射性

钮云龙¹, 杨维耿¹, 汪嘉骏²

1.浙江省辐射环境监测站国家环境保护辐射环境监测重点实验室,杭州, 310012;
2.清华大学, 北京, 100084

收稿日期:2019-04-05 出版日期:2020-04-20 发布日期:2021-01-15
作者简介:钮云龙(1989— ),男, 2012年毕业于沈阳工程学院核工程与核技术专业,学士; 2014年毕业于东华理工大学核能与核技术工程专业,硕士; 浙江大学电子与信息专业博士在读; 工程师。从事国控辐射环境自动站管理工作。

Detection of Abnormal Radioactivity by Gamma Spectrum Block Counting Method in Environmental Monitoring

Niu Yunlong¹, Yang Weigeng¹, Wang Jiajun²

1. Zhejiang Radiation Environmental Monitoring Station;The State Environmental Protection Key Laboratory of Radiation Monitoring, Hangzhou, Zhejiang, 310012;
2. Tsinghua University, Beijing, 100084

Received:2019-04-05 Online:2020-04-20 Published:2021-01-15

摘要/Abstract

摘要： 以分块计数法探究碘化钠(NaI)探测器是否能探测异常放射性,以及对于异常放射性设置预警值的具体数值的确定。共使用了⁴⁰K、¹³³Ba、²⁴¹Am、⁶⁰Co等4种放射源进行实验,实验结果认为使用分块计数法探测异常放射性是可行的,NaI探测器的预警值应设置为大于本底计数均值加1～1.5倍本底计数标准偏差。

关键词: 环境监测, 分块计数法, NaI探测器, 预警值

Abstract: The block counting method is employed to explore whether a sodium iodide (NAI) detector can detect abnormal radioactivity is environmental monitoring, and to determine the specific value of early warning value. Four kinds of radioactive sources, ⁴⁰K, ¹³³Ba, ²⁴¹Am and ⁶⁰Co, were used for the experiment. The results show that it is feasible to use the method to detect abnormal radioactivity. The early warning value should be set to be greater than the mean value of background count plus 1-1.5 times the standard deviation of background count.

Key words: Environmental monitoring, Block counting, NaI detector, Early warning value

中图分类号:

X837,TL75⁺1

钮云龙, 杨维耿, 汪嘉骏. 环境监测中伽马谱分块计数法探测异常放射性[J]. 辐射防护通讯, 2020, 40(2): 1-5.

Niu Yunlong, Yang Weigeng, Wang Jiajun. Detection of Abnormal Radioactivity by Gamma Spectrum Block Counting Method in Environmental Monitoring[J]. RADIATION PROTECTION BULLETIN, 2020, 40(2): 1-5.

环境监测中伽马谱分块计数法探测异常放射性

Detection of Abnormal Radioactivity by Gamma Spectrum Block Counting Method in Environmental Monitoring

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