The Damage Property Of Quartz Glass And Optical Devices Under Charged Particles Irradiation

Optical system has been served as the payload on space remote sensors and other satellites. Under space radiation environment, the reflectors and planar lens could be deteriorated, resulting in the decreases of service lifetime of spacecraft. It is of great significance to investigate the damage effects and mechanisms of space radiation on the reflectors and planar lens.The radiation effects of quartz glass under protons and electrons irradiation with energy from 60keV to 200keV, are mainly investigated, which are based on the interacting theory of particles with materials. The inelastic ionization damage model and rate equation of quartz glass are given under charged particles radiation with low energy. Meanwhile, the concentration of ions and electrons produced by ionization are given too. The change in optical density is studied, based on the inelastic ionization damage model. And the radiation damage effects of quartz glass under the irradiation of charged particles are investigated. The experimental results are mathematically fitting with the theoretical function deduced from the model.Based on the analysis of properties evolution, the energy loss of incidence light in different multilayer films is calculated, and under the proton radiation the theoretical model of reflectance evolution is founded, which indicates the relation between integral reflectance evolution and radiation fluence. The radiation experimental inttegral reflectance results interval 60keV～200keV are mathematically fitting with the the model. Meanwhile, the relation between the parameters and the radiation fluence is studied, which could be helpful for the other radiation experiments.According to the damage effects of planar lens under charged particles radiation, the theoretical model of transmissivity evolution is founded, which indicates the relation between transmissivity evolution and radiation fluence. The radiation experimental transmission results under 60keV and 160keV protons and electrons are mathematically fitting with the the model.