中子活化片活度测量方法研究  

Research of Method for Activity Measurement of Neutron-Activation-Foil

作　　者：谷振军[1] 张一云[1] 徐显启[2] 

机构地区：[1]四川大学物理科学与技术学院,成都610064 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核动力工程》2007年第4期122-124,共3页Nuclear Power Engineering

摘　　要：提出了利用4πβ-γ符合装置,不制作薄膜源情况下测量中子活化片活度的新方法。通过改变光电倍增管电压,使γ道探测器对γ光子和K层特征X射线探测效率一致,不进行效率外推,便可得到中子活化片活度。理论分析表明该方法可行。This paper puts forward a new method measuring the activity of neutron-activation-foil using 4πβ-γ coincidence equipment without making thin film source. By changing the voltage of photomultiplier tube, keeping the same efficiency of the 7 detector in detection of 7 photon and X ray of K shell, we can obtain the activity of neutron-activation-foil, without using efficiency extrapolation method. Theory analysis indicates that the method is feasible.

关 键 词：中子活化片 活度 4πβ-γ符合 直接测量法 

分 类 号：TL8[核科学技术—核技术及应用]