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Proceedings Paper

ROSAT Experience On X-Ray Optics Contamination
Author(s): Hans Hartmann; Roland Nord; Helmut Schwille; Edgar Bachor
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Paper Abstract

The different contamination control measures and monitors for the X-ray satellite ROSAT are described. Results are shown for cleanliness monitoring on ground and in vacuum test by Quartz Crystal Microbalance (QCM) and by analysis of witness mirror samples with Secondary Ion Mass Spectrometry (SIMS) and X-ray reflection measurements. Some unexpected contamination effects have had considerable impacts onto contamination control measures, especially onto specification of contamination witness samples, and they requested intense efforts with respect to contamination analysis. These investigations showed that there are considerable impurities of hydrocarbons trapped within the evaporated gold layers, caused by residual hydrocarbons in the evaporation facility or resulting from an unusually high affinity to hydrocarbon contamination compared to bulk gold. The latter may be stimulated by structural properties of the evaporated gold layer.

Paper Details

Date Published: 1 January 1986
PDF: 7 pages
Proc. SPIE 0733, Soft X-Ray Optics and Technology, (1 January 1986); doi: 10.1117/12.964912
Show Author Affiliations
Hans Hartmann, Dornier System GmbH (West Germany)
Roland Nord, Dornier System GmbH (West Germany)
Helmut Schwille, Dornier System GmbH (West Germany)
Edgar Bachor, Dornier System GmbH (West Germany)

Published in SPIE Proceedings Vol. 0733:
Soft X-Ray Optics and Technology
E. Koch; Guenther A. Schmahl, Editor(s)

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