Contamination Control Approach For The Extreme Ultraviolet Explorer Satellite Instrumentation

Stan Mrowka; Sharon Jelinsky; Patrick Jelinsky; Roger F. Malina

doi:10.1117/12.967065

1 January 1987 Contamination Control Approach For The Extreme Ultraviolet Explorer Satellite Instrumentation

Stan Mrowka, Sharon Jelinsky, Patrick Jelinsky, Roger F. Malina

Proceedings Volume 0777, Optical Systems Contamination: Effects, Measurement, Control; (1987) https://doi.org/10.1117/12.967065
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

Abstract

The Extreme Ultraviolet Explorer will perform an all-sky survey and spectros-copic observations over the wavelength range 80 - 900A. Hydrocarbon and particulate contamination will potentially affect the throughput and signal to noise ratio of the sig-nal detected by the instruments. We have developed a witness sample program to allow us to investigate and monitor the effects of specific contaminants on EUV reflectivity. Witness samples were intentionally contaminated with thin layers of Balzer's P-3 pump oil. An oil layer 150A thick was applied and found to evaporate over 8 hours. The EUV reflectivity and imaging properties were then measured and found to be acceptable for grazing angles between 5 and 30 degrees. In a second test, layers 500Å thick were deposited and then allowed to evaporate in vacuum; once the oil had evaporated to at least 350Å, the final sample reflectivity was degraded less than 10 percent, but the image was degraded severely by scattering. An outline of the contamination control program is also presented.

Citation Download Citation

Stan Mrowka, Sharon Jelinsky, Patrick Jelinsky, and Roger F. Malina "Contamination Control Approach For The Extreme Ultraviolet Explorer Satellite Instrumentation", Proc. SPIE 0777, Optical Systems Contamination: Effects, Measurement, Control, (1 January 1987); https://doi.org/10.1117/12.967065

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