摘要
A GaN-based pin neutron detector with a 6LiF conversion layer was fabricated, and can be used to detect thermal neutrons. Measurement of the electrical characteristic of the GaN-based pin neutron detector showed that the reverse leakage current of the neutron detector was reduced significantly after deposition of a 6LiF conversion layer on the detector surface. The thermal neutrons used in this experiment were obtained from an 241Am-Be fast neutron source after being moderated by 100-mm-thick high-density polyethylene. The experimental results show that the detector with 16.9-μm thick 6LiF achieved a maximum neutron detection efficiency of 1.9% at a reverse bias of 0 V, which is less than the theoretical detection efficiency of 4.1% calculated for our GaN neutron detectors.
作者
朱志甫
孙志嘉
邹继军
唐彬
修青磊
王仁波
瞿金辉
邓文娟
王少堂
彭俊波
王志栋
汤彬
张海平
Zhifu Zhu;Zhijia Sun;Jijun Zou;Bin Tang;Qinglei Xiu;Renbo Wang;Jinhui Qu;Wenjuan Deng;Shaotang Wang;Junbo Peng;Zhidong Wang;Bin Tang;Haiping Zhang(State Key Laboratory Breeding Base of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Engineering Research Center of Nuclear Technology Application(East China University of Technology),Ministry of Education,Nanchang 330013,China;CGN Begood Technology Co.,Ltd.,Nanchang 330013,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.61964001 and 61961001)
the State Key Laboratory of Particle Detection and Electronics(Grant No.SKLPDE-KF-2019)
the Natural Science Foundation of Jiangxi Province,China(Grant Nos.20192BAB207033 and 20181BAB202026)
the Foundation of State Key Laboratory Breeding Base of Nuclear Resources and Environment(East China Institute of Technology)(Grant No.NRE1515)
the Jiangxi Provincial Postdoctoral Science Foundation,China(Grant No.2018KY31).
