The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces

Details The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5897...97w&link_type=abstract

Photonics for Space Environments X. Edited by Taylor, Edward W. Proceedings of the SPIE, Volume 5897, pp. 97-104 (2005).

Computer Science

Scientific paper

We present laboratory measurements of the reduction in UV-to-visible/IR reflectivity (1200Å - 10,000Å) of optical surfaces due to 50Å - 500Å deposited layers of out-gassed molecular contaminants from 9 commonly used spacecraft/space instrument materials that include Apiezon-L hi-vacuum grease, Braycote-601EF lubricant, DC 704 silicon oil, EPOM rubber clad wire, PVC clad wire, Scotchweld 2216 epoxy, Uralane 5753 staking compound, Tefzel cable tie and Aeroglaze Z306 black paint on Kapton. Our results are compared with predictions from theoretical models currently being widely used throughout the space industry. Good agreement is found at UV wavelengths, but large differences occur at visible wavelengths. This latter effect is due to the application of Beer's Law, which ignores the non-negligible effect of reflectance scattering from the thin film of the contaminant.

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