几种用于n-γ甄别的有机闪烁体探测器性能评测  

Performance Evaluation of Several Organic Scintillator Detectors for n-γDiscrimination

作　　者：夏文明 节帅 王树林 隗莲 逄海涛 XIA Wenming;JIE Shuai;WANG Shulin;WEI Lian;PANG Haitao(College of Nuclear Science and Technology,Naval University of Engineering,Wuhan 430033;No.92330 Troops of PLA,Qingdao 266100)

机构地区：[1]海军工程大学核科学技术学院,武汉430033 [2]中国人民解放军92330部队,青岛266100

出　　处：《舰船电子工程》2022年第3期171-175,共5页Ship Electronic Engineering

摘　　要：有机闪烁体具有体积小、闪烁效率高、n-γ甄别性能好的特点,不需要慢化体即可探测中子,因而论文对三种EJ系列有机闪烁体:EJ-339液体闪烁体、EJ-276塑料闪烁体、EJ-270塑料闪烁体的性能进行评测。在Am-Be源和Ra-Be源照射条件下,使用N6720插件对三种有机闪烁体甄别性能和中子注量灵敏度进行了测验,结果表明EJ-339液闪n-γ甄别因子FOM值分别为1.53、1.50,注量灵敏度仅次于EJ-270,综合性能最好。The organic scintillator has the characteristics of small size,high scintillation efficiency and good n-γdiscrimination performance.It can detect neutrons without a moderator.Therefore,this article focuses on three EJ series organic scintillators,which are EJ-339 liquid scintillator,EJ-276 plastic scintillator,EJ-270 plastic scintillator performance evaluation.Under the irradiation conditions of Am-Be source and Ra-Be source,the N6720 plug-in is used to test the discrimination performance and neutron fluence sensitivity of three organic scintillators.The results show that the EJ-339 liquid scintillation n-γdiscrimination factor FOM values are 1.53 and 1.50 respectively,the fluence sensitivity is second only to EJ-270,and the overall performance is the best.

关 键 词：有机闪烁体 脉冲形状甄别 中子灵敏度 

分 类 号：TL818.1[核科学技术—核技术及应用]