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Proceedings Paper

Detecting x-rays with an optical imaging chamber
Author(s): Robert A. Austin; Brian D. Ramsey
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Paper Abstract

The light emitted by electron avalanches in a parallel plate chamber can be used to image the tracks of photoelectrons liberated by the interaction of an incident x-ray with the gas filling the chamber. The different morphologies of photoelectron tracks and minimum ionizing tracks can be used for charged particle rejection. The initial direction (before scattering) of the liberated photoelectron also contains information about the polarization of the incident radiation. We have built a small test chamber with which we have imaged photoelectron tracks using an intensified CCD camera. Our results show that optical imaging could be used in a hard x-ray imaging polarimeter useful for astronomy.

Paper Details

Date Published: 8 October 1992
PDF: 10 pages
Proc. SPIE 1743, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III, (8 October 1992); doi: 10.1117/12.130687
Show Author Affiliations
Robert A. Austin, NASA/Marshall Space Flight Ctr. (United States)
Brian D. Ramsey, NASA/Marshall Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 1743:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III
Oswald H. W. Siegmund, Editor(s)

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