NASA NTRS · 19700000639
Optical contamination during thermal testing in vacuum
Abstract
Comparative 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.
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Zwiener, J. M.. 1970-12-01. Optical contamination during thermal testing in vacuum. https://ntrs.nasa.gov/citations/19700000639
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