多层介质／金属紫外滤光膜系的辐照损伤特性

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多层介质／金属紫外滤光膜系的辐照损伤特性
吴永刚 焦宏飞 曹鸿 张莉 付联效 彭东功 郑秀萍同济大学精密光学工程技术研究所,上海200092摘　要:利用电子束蒸发方法制备用于BaF2晶体慢成分滤光的多层介质／金属紫外滤光膜系。在γ射线、中子和激光辐照环境中研究薄膜的损伤特性。结果表明：薄膜对γ射线和中子具有优良的耐辐照特性；在激光辐照环境中，薄膜的激光损伤阈值受多层薄膜中金属层的影响，激光入射时，最先辐照到的金属层的厚度决定了多层薄膜的耐激光辐照损伤特性。[著者文摘]

2 G( }+ [+ n# U: C& Q  [关键词:BaF2晶体 多层膜 介质／金属薄膜 滤光膜 辐照损伤
& s7 a. y, b& m$ ^# @分类号:　O484.4[著者标引]文献标识码：A文章编号：1000-6931（2007）06-0729-05栏目信息：技术及应用
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Characterization of Dielectric/Metallic Multilayer UV Filter Irradiated by γ-ray, Neutron and Laser BeamsWU Yong-gang, JIAO Hong-fei, CAO Hong, ZHANG Li, FU Lian-xiao, PENG Dong-gong, ZHENG Xiu-ping Institute of Precise Optical Engineering and Technology, Tongji University, Shanghai 200092, ChinaAbstract:Dielectric/metallic multilayer UV filter applied for the suppression of slow component of BaF2 scintillator was prepared with electron beam evaporation, and the effects of γ-ray, neutron and laser beam on the filter were characterized. Results show that the performance of the filter keeps unchanged under γ-ray irradiation of 1×10^5 Gy and neutron irradiation of 4.0×10^13 cm^-2. The damage threshold of the filter irradiated by laser beams is related to the layer which was first encountered by the laser beam, and its thickness determines the damage threshold of the filter.[著者文摘]
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Key words:BaF2 scintillator; multilayer; dielectric/metallic film; filter; irradiation damage