Mo/Si多层膜反射镜在带电粒子照射下反射率变化  

Change of reflectivity of Mo/Si multilayer mirror irradiated by charged particles

作　　者：陈波[1] 李忠芳[1] 尼启良[1] 齐立红[1] 王丽辉[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033

出　　处：《光学精密工程》2005年第z1期38-41,共4页Optics and Precision Engineering

基　　金：国家自然科学基金;空间软X射线/极紫外波段成像基础技术研究基金(No.60223003);空间高分辨率光学与极紫外成像方法研究基金(No.10333010)

摘　　要：为模拟低地球轨道空间辐射环境,利用高能电子和质子对应用于空间极紫外望远镜上的Mo/Si多层膜反射镜分别进行照射,研究在电子和质子照射下多层膜反射镜反射率的变化,电子的能量和辐照剂量分别为4.5 MeV和3.3×1010mm-2,质子的能量和辐照剂量分别为160 keV和1×1013cm-2。实验结果显示,经高能电子照射后的多层膜反射镜反射率有所降低,降低幅度在1%~3%之间,经质子照射后反射率没有变化。并对带电粒子对多层膜反射镜的辐射损伤作了初步分析。The reflectivity change of Mo/Si multilayer mirror used on the space solar telescope after irradiated by high energy electron and proton is investigated.The radiation condition is simulated to low-Earth orbit space radiation environment,the electron energy is 4.5 MeV and the dosage of irradiation is 3.3×10^(10) mm^(-2),the proton energy is 160 keV and the total irradiation flux is 1×10^(13) cm^(-2). The experiment results indicate that the reflectivity of the Mo/Si multilayer mirror reduces by 1%~3% after high energy electron irradiation,and the reflectivity doesn't change after proton irradiation.And we also analyze the radiation damage of the Mo/Si multilayer mirror caused by charged particles.

关 键 词：空间辐射环境 Mo/Si多层膜反射镜 带电粒子 辐射损伤 

分 类 号：O484.41[理学—固体物理]