对几种玻璃(K9-HL玻璃、JGS3石英玻璃、K509玻璃以及JGS1石英玻璃)在电离辐照(质子、电子)作用下的光学稳定性进行了系统研究, 并以此为基础, 通过空间电离辐照在玻璃作用的模拟计算, 对这几种玻璃在轨(近地点350 km, 远地点425 km, 轨道倾角51.6o)光学寿命进行了预测. 在该轨道使用10年时, K9-HL玻璃可见光透过率可能出现明显下降, 而JGS3石英玻璃、K509玻璃以及JGS1石英玻璃的可见光透过率保持不变或变化很小. 由于绝大多数空间粒子穿透能力小, 空间电离辐照仅能造成玻璃表层的着色. 因此, 长期在轨航天器舷窗可加一防电离辐照层以减少内层玻璃接受的电离辐照量, 而该层玻璃可采用石英玻璃.
The optical stabilities of several glasses (K9-HL glass, JGS3 silica glass, K509 glass and JGS1 silica glass) under conditions of ionizing radiation (proton flux, electron flux) were studied. Additionally, using the simulation results of space ionizing radiation by SPENVIS and CR?ME-MC, optical lives of these four glasses serving in a given orbital (perigee 350 km, apogee 425 km, orbital inclination 51.6o) were analysed. It can be found that being used for more than 10 years in this given orbital, the optical transmission of the K9-HL glass evidently decreased, while the optical transmission of the other three glasses (JGS3 silica glass, K509 glass and JGS1 silica glass) didn’t change or changed a little and they can serve as good optical materials in the given space orbital. Because most of the space particles (ionizing radiation) can be effectively inhibited or absorbed in some penetration depth of the glass, the space ionizing radiation can only color a surface layer of the glass, as a result, an anti-radiation glass layer can be put outside the window of a long duration spacecraft in order to reduce ionizing irradiation, and the layer can be made of silica glass.
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