Displacement damage in optocouplers induced by high energy neutrons at back-n in China Spallation Neutron Source  

作　　者：Rui Xu Zu-Jun Wang Yuan-Yuan Xue Hao Ning Min-Bo Liu Xiao-Qiang Guo Zhi-Bin Yao Jiang-Kun Sheng Wu-Ying Ma Guan-Tao Dong 徐瑞;王祖军;薛院院;宁浩;刘敏波;郭晓强;姚志斌;盛江坤;马武英;董观涛(School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China;State Key Laboratory of Intense Pulsed Irradiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,China)

机构地区：[1]School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China [2]State Key Laboratory of Intense Pulsed Irradiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,China

出　　处：《Chinese Physics B》2020年第1期307-310,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11875223,11805155,and 11690043);the Chinese Academy of Sciences Strategic Pilot Science and Technology Project(Grant No.XDA15015000);the Innovation Foundation of Radiation Application,China(Grant No.KFZC2018040201);the Foundation of State Key Laboratory of China(Grant Nos.SKLIPR1803 and 1903Z)

摘　　要：Neutron radiation experiments of optocouplers at back-streaming white neutrons(back-n)in China Spallation Neutron Source(CSNS)are presented.The displacement damages induced by neutron radiation are analyzed.The performance degradations of two types of optocouplers are compared.The degradations of current transfer ratio(CTR)are analyzed,and the mechanisms induced by radiation are also demonstrated.With the increase of the accumulated fluence,the CTR is degrading linearly with neutron fluence.The radiation hardening of optocouplers can be improved when the forward current is increased.Other parameters related to CTR degradation of optocouplers are also analyzed.Neutron radiation experiments of optocouplers at back-streaming white neutrons(back-n) in China Spallation Neutron Source(CSNS) are presented. The displacement damages induced by neutron radiation are analyzed. The performance degradations of two types of optocouplers are compared. The degradations of current transfer ratio(CTR) are analyzed,and the mechanisms induced by radiation are also demonstrated. With the increase of the accumulated fluence, the CTR is degrading linearly with neutron fluence. The radiation hardening of optocouplers can be improved when the forward current is increased. Other parameters related to CTR degradation of optocouplers are also analyzed.

关 键 词：China Spallation Neutron Source OPTOCOUPLER neutron radiation displacement damage current transfer ratio 

分 类 号：TN622[电子电信—电路与系统]