Slow Positron Beam Probe for the ZnO/Silicone under Proton Irradiation

摘要：

The degradation of ZnO/Silicone coating system under 90keV proton irradiation varying from 5×1014cm-2 to 1×1016cm-2, was studied by slow positron annihilation spectrum. Effective diffusion length calculated by Variable energy positron fit (VEPFIT) shows a dramatically break in a dose of 1×1015cm-2. It is ascribed to the increase of crosslink density and decrease of free volume and hole during the proton irradiation. Furthermore, positron has shown a satisfying sensitivity in detecting the nano-scale defect on ZnO/Silicone system.

关键词： ZnO/Silicone proton irradiation slow positron beam effective diffusion length

作者: Yingping Hao Huimin Weng Chundong Li Weifeng Guo Jiandang Liu Huaijiang Du Haiying Xiao Bangjiao Ye

作者单位: Department of Modern Physics,University of Science and Technology of China,Hefei 230026,P.R.China Space Materials & Environment Engineering Laboratory,Harbin Institute of Technology,Harbin 150001,P. Department of Modern Physics,University of Science and Technology of China,Hefei 230026,P.R.China;De

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 108-110

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）