带电粒子辐照下石英玻璃和镀铝膜反射镜光学性能研究

提出低能带电粒子辐照下石英玻璃非弹性电离损伤的物理模型和速率方程，给出了电离效应产生带电离子、电子浓度的解析表达式.讨论了光密度与吸收剂量之间的变化关系，并与实验结果进行了比较.还给出光学反射镜反射率表达式及数学模拟结果.利用所建立的模型，可以定量描述低能带电粒子辐照特别是综合辐照时石英玻璃和镀金属膜反射镜光学性能随辐照剂量的变化情况.关键词：电离损伤综合辐照石英玻璃光密度

Study on the optical property of quartz glass and Al film reflector under charged particles irradiation

The damage model and the rate equation of quartz glass were set up under charged particles irradiation, and the concentration of ions and electrons produced by ionization were also given. The mathematical fitted results of the change in optical density are in accordance with the experimental results. The model was also applied to optical Al film reflector, and the mathematical fitted results of the integral reflectance of Al film reflector were given. The proposed damage model can be used to describe quantitatively the change in optical property of quartz glass with increasing absorption dose under charged particles irradiation.