Optical imaging chamber for X-ray astronomy

Details Optical imaging chamber for X-ray astronomy Optical imaging chamber for X-ray astronomy

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993opten..32.1990a&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 32, no. 8, p. 1990-1994.

Astronomy and Astrophysics

Astronomy

12

Photoelectrons, Polarimeters, X Ray Astronomy, X Ray Imagery, Charge Coupled Devices, Parallel Plates

Scientific paper

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 differing morphologies of photoelectron tracks and high-energy charged particle tracks can be used for background 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.

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