摘要
采用集装箱车辆携带天然放射性物质和/或特殊核材料对门式车辆放射性物质监测系统(RPM)进行了多种研究试验。通过对RPM采集到的γ计数率数据进行分析,验证了天然放射性物质的质量和特殊核材料的活度与RPM的γ计数率之间的关系,研究了车辆通过速度对RPM的γ计数率的影响,建立了一种通过RPM的γ计数率快速评估天然放射性物质中是否藏有特殊核材料的方法。
A variety of research experiments were carried out on vehicle radiation portal monitor(RPM)using container vehicles carrying natural occurring radioactive material(NORM)and/or special nuclear material.Through the analysis of theγcount rate data collected by RPM,the relationship between the mass of NORM/the activity of special nuclear material and theγcount rate of RPM is verified.The influence of vehicle speed on theγcount rate of RPM is studied,and a method to fast assess whether there are special nuclear material hiding in NORM through theγcount rate of RPM is established.
作者
杨长杰
韩叶良
刘崎
YANG Chang-jie;HAN Ye-liang;LIU Qi(State Nuclear Security Technology Center,Beijing 102401,China)
出处
《核电子学与探测技术》
CAS
北大核心
2021年第6期1021-1032,共12页
Nuclear Electronics & Detection Technology
基金
国际原子能机构协调研究项目(编号J02005)。
关键词
门式车辆放射性物质监测系统
天然放射性物质
特殊核材料
γ计数率
Vehicle Radiation Portal Monitor
Natural Occurring Radioactive Material
Special Nuclear Material
γCount Rate
