辐照加工宝石的放射性测量研究  

Study on Radioactivity Measurement of Irradiated Gemstone

作　　者：王璨辉[1] 康玺[2] 胡创业[2] WANG Canhui;KANG Xi;HU Chuangye(Nuclear Power Institute of China,Chengdu 610213,China;University of South China,Hengyang 421001,China)

机构地区：[1]中国核动力研究设计院,四川成都610213 [2]南华大学,湖南衡阳421001

出　　处：《原子能科学技术》2018年第10期1879-1883,共5页Atomic Energy Science and Technology

摘　　要：利用辐照进行天然宝石改色,能显著提升宝石的观赏价值和商业价值。但经反应堆辐照后的宝石含有人工放射性核素,会对相关人员产生照射。本文利用γ能谱分析方法对辐照宝石进行了直接放射性测量。采用实验和蒙特卡罗模拟相结合的方法分析了辐照宝石的几何结构、密度对其γ能谱测量准确性的影响,得到探测效率与能量、样品质量的修正公式,从而实现了无需磨制过程的辐照宝石放射性的γ能谱准确测量。The ornamental value and commercial value of gemstone can be greatly improved with the color change of natural gemstone by irradiation.But the gemstone irradiated by the nuclear reactor contains residual radioactive nuclides,which produce radiation exposure to the human.In this paper,the direct radioactivity measurement of irradiated gemstone was made by means of gamma ray spectrum analysis.The influence of geometric structure and density of irradiated gemstone on the accuracy of gamma ray spectrum measurement was analyzed by the method of experiment and Monte Carlo simulation.The calculated formula for the detection efficiency with energy and sample mass is obtained,and the accurate measurement of radioactivity of irradiated gemstone without a grinding process is realized.

关 键 词：辐照宝石 放射性核素 γ测量 

分 类 号：TL81[核科学技术—核技术及应用]