大体积航空巡测γ谱仪的点源校准  

Point Source Calibration of Mass Airborne γ-ray Spectrometer

作　　者：韩善彪[1] 徐宏坤[2] 张伟[1] 吕雪艳[1] 任健保 柳加成[1] HAN Shanbiao;XU Hongkun;ZHANG Wei;LV Xueyan;REN Jianbao;LIU Jiacheng(Nuclear and Radiation Safety Center,Ministry of Environmental Protection,Beijing 100082,China;Beijing Research Center for Radiation Application,Beijing 100015,China)

机构地区：[1]环境保护部核与辐射安全中心,北京100082 [2]北京市射线应用研究中心,北京100015

出　　处：《原子能科学技术》2018年第11期2067-2071,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11505077)

摘　　要：参考国际原子能机构(IAEA)航空辐射监测技术标准和国内外行业经验,选取3种人工放射源对现有先进的大体积航空巡测γ谱仪进行了寻源模式的实验校准。介绍了航空巡测γ谱仪系统开展点源模式的实验校准方法、校准方案,实验过程中严格控制实验条件和过程质量,给出了241 Am、137Cs和60Co人工放射源点源校准参数,基于这3种核素校准参数可估算其他人工放射性核素的校准参数,从而实现了航测系统寻找人工放射源进行定量测量的功能。Three kinds of man-made radioactive sources were chosen and experimental calibration for source-searching mode was done using existing advanced mass airborneγ-ray spectrometer based on technical standards of airborne radiation survey from IAEA and industrial experience of home and abroad.Experimental calibration method and plan in point source mode using airborneγ-ray spectrometer were introduced.In the process of the experiment,experiment condition and process quality were strictly controlled and calibration parameters of 241 Am,137 Cs and 60 Co were obtained.Calibration parameters of other nuclides can be estimated according to those of 241 Am,137 Cs and 60 Co and the airborne survey system is able to search man-made radioactive sources and perform qualitative measurement by this way.

关 键 词：航空辐射监测 航空巡测γ谱仪 寻源 实验校准 

分 类 号：TL18[核科学技术—核能科学]