Polyimide x-ray filter substrates optimized for cryogenic temperatures

David A. Grove

doi:10.1117/12.363653

29 September 1999 Polyimide x-ray filter substrates optimized for cryogenic temperatures

David A. Grove

Proceedings Volume 3766, X-Ray Optics, Instruments, and Missions II; (1999) https://doi.org/10.1117/12.363653
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

New generation x-ray instruments for spacecraft such as ASTRO-E and CONSTELLATION-X have very specialized requirements, notably operation at cryogenic temperatures. Luxel Corporation, under a NASA Phase I SBIR contract, undertook the demonstration of feasibility of producing polyimide films suitable for use as x-ray filter substrates specifically optimized for cryogenic applications. 5000 angstrom thick polyimide films were processed using different cure cycles, and burst pressure analyses were performed at 293, 77, and 4 Kelvin. Test data showed that polyimide films are inherently stronger at cryogenic temperatures than at room temperature. Through cure modification, film strength was increased an additional 9 percent at 4K over that of the standard cure clearly showing the feasibility of film optimization.

Citation Download Citation

David A. Grove "Polyimide x-ray filter substrates optimized for cryogenic temperatures", Proc. SPIE 3766, X-Ray Optics, Instruments, and Missions II, (29 September 1999); https://doi.org/10.1117/12.363653

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