高纯锗γ谱仪无源效率校准分析  

Sourceless Efficiency Calibration of High Purity Germanium γ Spectrometer

作　　者：王志玉 孔令海 曹鹏涛 李锦 Wang Zhiyu;Kong Linghai;Cao Pengtao;Li Jin(Lianyungang Radiation Environment Monitoring and Management Station,Lianyungang 222047,China;Nuclear and Radiation Safety Center,Beijing 100082,China)

机构地区：[1]连云港辐射环境监测管理站,连云港222047 [2]生态环境部核与辐射安全中心,北京100082

出　　处：《核安全》2024年第4期96-102,共7页Nuclear Safety

摘　　要：本文对无源效率校准软件LabSOCS进行验证及应用分析。选用两类共7个标准源对LabSOCS效率计算结果进行验证,^(137)Cs、^(60)Co和^(241)Am等41个监测数据表明,混合体源、点源相对偏差均分别位于±7.2%、±2%范围以内,说明点源验证效果较好,混合体源偏差略高。将LabSOCS软件应用于IAEA、中辐院样品能力验证及全国质量考核样品,选取具有代表性的水样、土壤、生物和气溶胶等7个样品进行分析,无源效率计算结果表明:采用IAEA评价准则,^(137)Cs、^(60)Co、^(241)Am等22个数据均为“满意”,即准确度和精密度均合格。This paper introduces verification and application of sourceless efficiency calibration(LabSOCS).Two types of 7 standard sources are selected to verify the efficiency calculation results of LabSOCS.The 41 monitoring datas,including ^(137)Cs,^(60)Co and ^(241)Am,show that the relative deviations of hybrid source and point source are within the range of±7.2% and±2%,respectively,indicating that the verification effect of point source is good,and the deviation of hybrid source is slightly higher.The LabSOCS software is applied to the sample capability verification of IAEA and CIRP including national quality assessment,and 7 representative samples such as water samples,soil samples,biological samples and aerosols are selected for analysis.The calculation results of sourceless efficiency show that using IAEA evaluation guidelines,22 data,including ^(137)Cs,^(60)Co and ^(241)Am,are“satisfactory”,that is,accuracy and precision are qualified.

关 键 词：高纯锗谱仪 无源效率校准 Γ谱仪 LabSOCS 

分 类 号：TL817[核科学技术—核技术及应用]