高纯锗γ谱仪对自然环境中氡子体的探测效率刻度  

High-purity germanium γ spectrometer radionuclides in the natural environment detection efficiency scale

作　　者：何正忠[1] 吕丽丹[1] 周文韬 徐继圆[1] He Zhengzhong;Lu Lidan;Zhou Wentao;Xu Jiyuan(College of Nuclear Science and Technology, Hengyang Hu,nan 421001, China)

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《环境与发展》2018年第2期125-126,共2页Environment & Development

基　　金：湖南省教育厅科研项目"γ谱仪测量高氡浓度研究";编号:15C1177;深圳市人居环境委员会项目"深圳市环境氡浓度水平及所致公众有效剂量分布"编号:2017-01-0298-A1;南华大学研究生科研创新项目;项目编号:2016XCX02

摘　　要：使用氡子体标准源对氡子体高纯锗γ能谱测量的探测效率进行了实验测量,并用蒙特进行理论模拟。结果表明,当滤膜放置谱仪表面时,氡子体^(214)Pb 352 keV全能峰探测效率实验值为10.09%,^(214)Bi 609keV的全能峰探测效率实验值为4.22%,可用于氡子体浓度高纯锗γ能谱测量。The detection efficiency of the radon-donor high-purity germaniumγ-energy spectrum measurement using radon progeny standard source was experimentally measured and simulated by Monte-Carlo.The results show that when the filter is placed on the surface of the spectrometer,the detection efficiency of radon daughter body214Pb352keV is10.09%,and that of214Bi609keV is4.22%.It can be used for radon donor concentration high purity germaniumγenergy spectrum measurement.

关 键 词：高纯锗 氡子体 探测效率 

分 类 号：X125[环境科学与工程—环境科学]