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Experiences with thin film filter development for the Extreme Ultraviolet ExplorerThe design, development, and optimization of the thin film filters used on the Extreme Ultraviolet Explorer (EUVE) Satellite to define the EUV wavelength bandpasses of the individual instruments was a complicated task. The bandpasses had to be optimized for the astrophysical goals of the EUVE mission and constrained by the strong geocoronal EUV background emission. Materials with optical constants that met these requirements had to be found and tested. In many cases these materials were not compatible or were not strong enough to survive the intense vibrations of a rocket launch. Other effects, such as photoelectron 'halo' produced in the filters, were not discovered until flight qualification. The final set of flight filters included: lexan/boron, aluminum/carbon, titanium/antimony/aluminum, and tin/silicon monoxide. This paper discusses the lessons learned in the development of these filters, including the optimization process, material interactions and problems, calibration techniques, vibration susceptibility, thermal tests, and photoelectron emission. We feel the experiences gained over the last 10 years creating the filter sets for EUVE will be invaluable for future missions that use thin film filters.
Document ID
19930055641
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vallerga, J. V.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Vedder, P. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Siegmund, O. H. W.
(California Univ. Berkeley, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Multilayer and grazing incidence X-ray(EUV optics for astronomy and projection lithography; Proceedings of the Meeting, San Diego, CA, July 19-22, 1992 (A93-39601 15-74)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Optics
Accession Number
93A39638
Funding Number(s)
CONTRACT_GRANT: NAS5-29298
Distribution Limits
Public
Copyright
Other

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