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Proceedings Paper

Evaluation of siliconic paint contamination effects on optical surfaces exposed to the space environment
Author(s): Moshe Shiloh; Eitan Grossman; Yoram Noter; Yeshayahu Lifshitz
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Paper Abstract

Outgassing products originating from white siliconic paint were deposited on optical surfaces. The contamination layer was then exposed to vacuum UV (VUV) radiation. The volatile fragments generated by the paint outgassing as well as the UV irradiation were studied using a residual gas analyzer. The VUV effect on the contamination layer was studied by measuring the etching rate, measuring changes in the chemical state and measuring degradation in the optical transparency by UV-VIS photospectroscopy. Compiling the data obtained from the various analytical techniques it was concluded that the main erosion mechanism was crosslinking of the siliconic polymer chains. The crosslinking behavior induced fixation of the contamination layer, caused 'crystallization' of its liquid like form and degradation in its optical transparency.

Paper Details

Date Published: 27 October 1998
PDF: 8 pages
Proc. SPIE 3427, Optical Systems Contamination and Degradation, (27 October 1998); doi: 10.1117/12.328506
Show Author Affiliations
Moshe Shiloh, Soreq Nuclear Research Ctr. (Israel)
Eitan Grossman, Soreq Nuclear Research Ctr. (Israel)
Yoram Noter, Soreq Nuclear Research Ctr. (Israel)
Yeshayahu Lifshitz, Soreq Nuclear Research Ctr. (Israel)

Published in SPIE Proceedings Vol. 3427:
Optical Systems Contamination and Degradation
Philip T. C. Chen; William E. McClintock; Gary J. Rottman, Editor(s)

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