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Proceedings Paper

Detection of organic contamination on surfaces by infrared spectroscopy
Author(s): Jaco M. Guyt; Marc Van Eesbeek; G. Van Papendrecht
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Paper Abstract

Organic contamination control at ESA is based on the infrared spectroscopy method described in the PSS-01-705. The method is used to verify the organic contamination levels during integration and thermal vacuum tests. The detection limits are in the 10-8 g/cm2 range or below, depending on the equipment and sampling method. Quantification is performed with common space contaminants, with the possibility to include a new calibration standard when a specific contaminant is occurring more often. Sampling is done with witness sensors of 15 cm2 or infrared transparent windows to verify the cleanliness after specific events. When no witness sensor has been used, solvent compatible surfaces can be analyzed by a solvent wash or by wiping the surface using dry or wetted tissues. Calibration curves with detection limits are presented, with an examples of a contamination event found on a retrieved space hardware.

Paper Details

Date Published: 11 September 2002
PDF: 10 pages
Proc. SPIE 4774, Optical System Contamination: Effects, Measurements, and Control VII, (11 September 2002); doi: 10.1117/12.481659
Show Author Affiliations
Jaco M. Guyt, European Space Agency/ESTEC (Netherlands)
Marc Van Eesbeek, European Space Agency/ESTEC (Netherlands)
G. Van Papendrecht, European Space Agency/ESTEC (Netherlands)

Published in SPIE Proceedings Vol. 4774:
Optical System Contamination: Effects, Measurements, and Control VII
Philip T. C. Chen; O. Manuel Uy, Editor(s)

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