Slow Positron Beam Probe for the ZnO/Silicone under Proton Irradiation
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Published:2008-11
Issue:
Volume:607
Page:108-110
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ISSN:1662-9752
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Container-title:Materials Science Forum
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language:
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Short-container-title:MSF
Author:
Hao Ying Ping1,
Weng Hui Min1,
Li Chun Dong2,
Guo Wei Feng1,
Liu Jian Dang1,
Du Huai Jiang1,
Xiao Hai Ying2,
Ye Bang Jiao1
Affiliation:
1. University of Science and Technology of China
2. Harbin Institute of Technology
Abstract
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science