Thin film filter lifetesting results in the extreme ultraviolet

Details Thin film filter lifetesting results in the extreme ultraviolet Thin film filter lifetesting results in the extreme ultraviolet

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1742..486v&link_type=abstract

In: Multilayer and grazing incidence X-ray/EUV optics for astronomy and projection lithography; Proceedings of the Meeting, San

Astronomy and Astrophysics

Astrophysics

5

Extreme Ultraviolet Explorer Satellite, Extreme Ultraviolet Radiation, Life (Durability), Optical Filters, Test Facilities, Thin Films, Mechanical Properties, Nasa Space Programs, Optical Properties, Spaceborne Astronomy, Ultraviolet Telescopes, X Ray Astrophysics Facility

Scientific paper

We present the results of the thin film filter lifetesting program conducted as part of the NASA Extreme Ultraviolet Explorer (EUVE) satellite mission. This lifetesting program is designed to monitor changes in the transmission and mechanical properties of the EUVE filters over the lifetime of the mission (fabrication, assembly, launch and operation). Witness test filters were fabricated from thin film foils identical to those used in the flight filters. The witness filters have been examined and calibrated periodically over the past seven years. The filters have been examined for evidence of pinholing, mechanical degradation, and oxidation. Absolute transmissions of the flight and witness filters have been measured in the extreme ultraviolet (EUV) over six orders of magnitude at numerous wavelengths using the Berkeley EUV Calibration Facility.

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