Proportional counter windows for the Bragg crystal spectrometer on AXAF

Thomas H. Markert; James M. Bauer; Claude R. Canizares; Takashi Isobe; Seppo Arvo Anter Nenonen; J. O'Connor; Mark L. Schattenburg; Kathryn A. Flanagan; Martin V. Zombeck

doi:10.1117/12.48357

1 October 1991 Proportional counter windows for the Bragg crystal spectrometer on AXAF

Thomas H. Markert, James M. Bauer, Claude R. Canizares, Takashi Isobe, Seppo Arvo Anter Nenonen, J. O'Connor, Mark L. Schattenburg, Kathryn A. Flanagan, Martin V. Zombeck

Author Affiliations +

Proceedings Volume 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II; (1991) https://doi.org/10.1117/12.48357
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A Bragg Crystal Spectrometer (BCS) using a gas flow proportional counter as its primary detector is among the instruments under development for AXAF. The BCS will employ windows of 1-micron-thick polyimide coated on both sides with 200 A of Al; this window composition, while X-ray transmitting, will leak gas at a lower rate than the polypropylene film-based windows formerly employed. Accounts are given of the results obtained with additional innovative X-ray window materials currently under development, including diamond and Si-enriched Si3N4.

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Thomas H. Markert, James M. Bauer, Claude R. Canizares, Takashi Isobe, Seppo Arvo Anter Nenonen, J. O'Connor, Mark L. Schattenburg, Kathryn A. Flanagan, and Martin V. Zombeck "Proportional counter windows for the Bragg crystal spectrometer on AXAF", Proc. SPIE 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II, (1 October 1991); https://doi.org/10.1117/12.48357

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