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Optical contamination during thermal testing in vacuumComparative tests are described for optical degradation in vacuum systems served by oil-type or ion-type pumping operation. Results show that degradation occurs only during ultraviolet irradiation in vacuum systems with oil-type pumping systems and that it increases with exposure time. Degradation does not occur with ion systems.
Document ID
19700000639
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Zwiener, J. M.
Date Acquired
August 5, 2013
Publication Date
December 1, 1970
Subject Category
Physical Sciences
Report/Patent Number
MFS-20736
Report Number: MFS-20736
Accession Number
70B10659
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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