物理学报2012，Vol.61Issue(23)：164-169,6.
一种基于4He气闪烁体的裂变中子探测器
A fission neutron detector based on helium scintillator
张小东 1邱孟通 1张建福 1欧阳晓平 1张显鹏 1陈亮1
作者信息
- 1. 西北核技术研究所辐射探测科学研究中心,西安710024
- 折叠
摘要
Abstract
A new neutron detector is designed. Two 235UO2 target foils are used as radiators, and the 4He gas is used as scintillator in the detector. The detector combines the features of 235U and 4He fully, so it has some excellent performances, such as fiat energy response to neutrons, better n/γ discrimination, etc. It can be used well to detect neutrons in a pulsed mixture radiation field. In this paper, the principle and structure of the detector are introduced. The energy depositions of different energies of neutrons and y-rays in 4He gas are calculated. The neutron sensitivity, y ray sensitivity, n/γ, discrimination, and time response of the detector are investigated theoretically and experimentally. The neutron sensitivity is about 10^-15 C.cm2, T ray sensitivity is about 10^-17 C.cm2, and time response is about 33.1 ns.关键词
中子探测器/4He闪烁体/裂变碎片/灵敏度Key words
neutron detector/4He scintillator/fission fragments/sensitivity分类
能源科技引用本文复制引用
张小东,邱孟通,张建福,欧阳晓平,张显鹏,陈亮..一种基于4He气闪烁体的裂变中子探测器[J].物理学报,2012,61(23):164-169,6.
