Author:
Guan Qing-Feng ,Lü Peng ,Wang Xiao-Dong ,Wan Ming-Zhen ,Gu Qian-Qian ,Chen Bo , ,
Abstract
In this paper we characterize the microstructures of Mo/si multilager in space solar telescope induced by proton irradiation by transmission electron microscope (TEM). The optical performances of the Mo/Si multilayer mirror before and after proton irradiation are also determined. The experimental results show that some defect structures are introduced after proton irradiation. The Mo/Si periodic structure is destructed in some irradiation regions. The widths of Mo layer and Si layer significantly change and the Mo/Si interface is much rougher than before irradiation. Moreover, the obvious distortions of the Mo/Si interface and the formation of the small islands in Mo layer are also found. Furthermore, proton irradiation reduces the reflectivity of Mo/Si multilayer mirror. The dominante mechanism of optical degeneration of the Mo/Si multilayer induced by proton irradiation should be attributed to the formation of the defect structures.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
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