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Proceedings Paper

CdZnTe arrays for astrophysics applications
Author(s): James L. Matteson; Wayne Coburn; Fred Duttweiller; William A. Heindl; George L. Huszar; Philippe C. Leblanc; Michael R. Pelling; Laurence E. Peterson; Richard E. Rothschild; Robert T. Skelton; Paul L. Hink; Chris Crabtree
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Paper Abstract

The scientific objectives, status, and future instrumental requirements of high energy X-ray astronomy (20 to 200 keV) are discussed. Two particularly compelling requirements are: (1) an improvement in sensitivity to a level of about 5 microCrab and (2) a survey of the sky at a sensitivity of about 0.1 milliCrab, which will discover and characterize about 10,000 new sources. The first requirement can be fulfilled by imaging telescopes that use large-area focusing X-ray mirrors, which are effective over 5-30 arcminute fields, and the second requirement can be met by arrays of large area coded mask imagers with wide fields, about 50 deg. Multilayer mirror and CdZnTe detector technology now in development offers the potential to meet these objectives. Position-sensitive CdZnTe detectors are well-suited to both of these imaging techniques, and instrument concepts that use these detectors are described. Detectors with pixel readout are better suited for focusing telescopes, and those with crossed-strip readout are better suited for coded mask imagers. Technical aspects of these detectors are discussed. Recent work at UCSD and WU on CdZnTe strip detectors is described in detail. Studies with small, 40 micron, X-ray beams have mapped a crossed-strip detector's spatial response with fine spatial resolution.

Paper Details

Date Published: 7 July 1997
PDF: 16 pages
Proc. SPIE 3115, Hard X-Ray and Gamma-Ray Detector Physics, Optics, and Applications, (7 July 1997); doi: 10.1117/12.277681
Show Author Affiliations
James L. Matteson, Univ. of California/San Diego (United States)
Wayne Coburn, Univ. of California/San Diego (United States)
Fred Duttweiller, Univ. of California/San Diego (United States)
William A. Heindl, Univ. of California/San Diego (United States)
George L. Huszar, Univ. of California/San Diego (United States)
Philippe C. Leblanc, Univ. of California/San Diego (United States)
Michael R. Pelling, Univ. of California/San Diego (United States)
Laurence E. Peterson, Univ. of California/San Diego (United States)
Richard E. Rothschild, Univ. of California/San Diego (United States)
Robert T. Skelton, Univ. of California/San Diego (United States)
Paul L. Hink, Washington Univ. (United States)
Chris Crabtree, Washington Univ. (United States)


Published in SPIE Proceedings Vol. 3115:
Hard X-Ray and Gamma-Ray Detector Physics, Optics, and Applications
Richard B. Hoover; F. Patrick Doty, Editor(s)

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