首页> 外文会议>56th International Astronautical Congress 2005 vol.6 >RADIATION EFFECTS ON DIELECTRIC MULTILAYER COATINGS ON OPTICS
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RADIATION EFFECTS ON DIELECTRIC MULTILAYER COATINGS ON OPTICS

机译:光学介质上多层介质涂层的辐射效应

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Radiation damage on dielectric thin-layer was studied. The dielectric multilayer coating is a promising technology for the use of solar light collection mirrors in Space Solar Power System (SSPS) n the geostationary orbit, requiring removal of too long and short wavelength components for efficient energy conversion and long life of the converter. We estimated spatial distributions of numbers of displacement atoms using a Kinchin-Pease model for the proton incidence, and Frenkel pairs created via self-trapped exciton process initiated by electron excitation in the target for the proton and electron incidences. Proton incidence gives damages near the surface of the target due to low energy protons dominating its energy spectrum. Electron gives an almost uniform damage profile due to the small stopping power in the thin target. Silica is treated as a target material in this estimate. Electron irradiation experiment for a thin layer of silica target shows toughness for 11-year-equivalent exposure time at geostationary orbit.
机译:研究了电介质薄层的辐射损伤。介电多层涂层是在地球静止轨道的太空太阳能系统(SSPS)中使用太阳光收集镜的有前途的技术,需要去除太长和短波长的成分,以实现有效的能量转换和转换器的长寿命。我们使用Kinchin-Pease模型估算质子入射的位移原子数的空间分布,并通过质子和电子入射目标中的电子激发引发的自陷激子过程创建的Frenkel对。质子入射会由于低能质子支配其能谱而使靶表面附近受损。由于薄靶材的制止能力小,电子给出的损伤分布几乎均匀。在此估算中,二氧化硅被视为目标材料。二氧化硅靶薄层的电子辐照实验表明,对地静止轨道在相当于11年的暴露时间内具有韧性。

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