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15 October 1997 Low-reflectivity materials for the vacuum UV: Mg and Ag surfaces
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Abstract
We have developed absorptive Mg coatings for the vacuum UV (VUV) wavelength range. The total hemispherical reflectivity at normal incidence was measured at 121.6 nm. The reflectivity of the Mg coating produced by magnetron sputtering (presumably from the vapor phase) is close to 1%, comparable to the best known coatings. In contrast to the latter they are mechanically robust. After storage in air for 2 years the reflectivity increased by a factor 2. The reflectivity of Mg and Ag coatings produced by thermal evaporation was observed to be about 2 - 3%. The reflectivity of the Ag coatings proved to be stable over a period of 58 months in air.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kamil A. Moldosanov, Michael A. Samsonov, Lilia S. Kim, and Reinhold Henneck "Low-reflectivity materials for the vacuum UV: Mg and Ag surfaces", Proc. SPIE 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, (15 October 1997); https://doi.org/10.1117/12.278909
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