Long-term change of transmission spectra of quartz glass contaminated with oleamide in vacuum
Long-term change of transmission spectra of quartz glass contaminated with oleamide in vacuum
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DOI：
10.1016/j.actaastro.2022.11.016
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发表时间：
2022-11
影响因子：
3.5
通讯作者：
N. Shimosako;H. Sakama;T. Dotani
中科院分区：
文献类型：
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作者：
N. Shimosako;H. Sakama;T. Dotani
研究了在真空和大气条件下，油酰胺污染玻璃透射光谱的长期变化。采用真空蒸发法将油酰胺作为污染物沉积到石英玻璃基底上。被油酰胺污染的玻璃的透射光谱显示在紫外区域的透射率和在可见光和近红外区域的透明度降低。在真空条件下储存期间，在可见光和近红外区域的透射率在较长的时间内逐渐下降。这种减少归因于形成几微米大小的油酰胺薄片以及伴随的光散射增加。薄片的形成取决于油酰胺的厚度，并且在薄（0. 5 μ m）油酰胺膜。这种薄片的形成归因于油酰胺的蒸发。结果表明，应从地面检查从在轨航天器获得的光学数据的长期退化情况。
The long-term changes in the transmission spectra of glass contaminated with oleamide were investigated under vacuum and atmospheric conditions. Oleamide as a contaminant material was deposited onto quartz glass substrates using a vacuum evaporation method. The transmission spectra of the glass contaminated with oleamide showed a decrease in transmittance in the ultraviolet region and transparency in the visible and near-infrared regions. During storage under vacuum, the transmittance in the visible and near-infrared regions decreased gradually over an extended period. This decrease was attributed to the formation of oleamide flakes several microns in size and the concomitant increase in light scattering. The formation of the flakes depended on the thickness of the oleamide, and flake formation was not observed in the case of a thin (0. 5 μ m) oleamide film. This flake formation is attributed to the evaporation of oleamide. The results suggest that the long-term degradation of optical data obtained from spacecraft in orbit should be checked on the ground.