Efficiency-determined method for thermal neutron detection with inorganic scintillator  

作　　者：FU Zaiwei HENG Yuekun GU Shenjie TIAN Lin 

机构地区：[1]Shanghai Nuclear Engineering Research & Design Institute [2]Institute of High Energy Physics, Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2013年第4期23-27,共5页核技术（英文）

基　　金：Supported by the National Natural Science Foundation of China(Grant No.10875140)

摘　　要：Because of 3He shortage,sintillator is a promising alternative choice for neutron detection in the field of thermal neutron scattering and imaging.Also,the neutron detection efficiency is difficult to be determined.In this paper,the efficiency for thermal neutron detection is presented by inorganic scintillator using probability principles,supposed that the material of scintillator is uniform in element distribution,and that attenuation length of scintillation light is longer than that of its thickness in the scintillator.The efficiencies for two pieces of lithium glass are determined by this method,indicating the method is useful for determining efficiency of thermal neutron detections.Because of 3He shortage, sintillator is a promising alternative choice for neutron detection in the field of thermal neutron scattering and imaging. Also, the neutron detection efficiency is difficult to be determined. In this paper, the efficiency for thermal neutron detection is presented by inorganic scintillator using probability principles, supposed that the material of scintillator is uniform in element distribution, and that attenuation length of scintillation light is longer than that of its thickness in the scintillator. The efficiencies for two pieces of lithium glass are determined by this method, indicating the method is useful for determining efficiency of thermal neutron detections.

关 键 词：中子探测效率 无机闪烁体 测定方法 热中子散射 元素分布 检测效率 氦-3 长度比 

分 类 号：TL812[核科学技术—核技术及应用] TL32