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Proceedings Paper

Room temperature semiconductor detectors for hard x-ray astrophysics
Author(s): Ann M. Parsons; Carl Michael Stahle; Casey M. Lisse; R. Sachidananda Babu; Neil A. Gehrels; Bonnard J. Teegarden; Peter K. Shu
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Paper Abstract

Room temperature cadmium zinc telluride (CdZnTe) and mercuric iodide (HgI2) semiconductor hard X-ray detectors are currently being evaluated at NASA Goddard Space Flight Center for use in future balloon and satellite applications. PoRTIA, a small engineering prototype hard X-ray (20 - 150 keV) balloon instrument will contain both a CdZnTe and a HgI2 detector, each 6.5 cm2 x .15 - .2 cm and sharing the same 5 degree(s) field-of-view. PoRTIA will be launched from Alice Springs, Australia in the Spring of 1995 as a piggyback instrument aboard the GRIS balloon payload. PoRTIA will provide valuable information about detector efficiency, durability and material dependent detector background components at balloon altitudes as it observes the Crab Nebula. In addition, a CdZnTe research and development program has been initiated to develop the capability to produce improved CdZnTe detectors for astrophysics applications. The work at Goddard continues in an effort to develop CdZnTe detectors with improvements in electronics, contacts and packaging methods.

Paper Details

Date Published: 21 September 1994
PDF: 12 pages
Proc. SPIE 2305, Gamma-Ray Detector Physics and Applications, (21 September 1994); doi: 10.1117/12.187260
Show Author Affiliations
Ann M. Parsons, NASA/Goddard Space Flight Ctr. (United States)
Carl Michael Stahle, NASA/Goddard Space Flight Ctr. and Fairchild Space and Defense Corp. (United States)
Casey M. Lisse, NASA/Goddard Space Flight Ctr. and Hughes STX (United States)
R. Sachidananda Babu, NASA/Goddard Space Flight Ctr. and Ball Corp. (United States)
Neil A. Gehrels, NASA/Goddard Space Flight Ctr. (United States)
Bonnard J. Teegarden, NASA/Goddard Space Flight Ctr. (United States)
Peter K. Shu, NASA/Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 2305:
Gamma-Ray Detector Physics and Applications
Elena Aprile, Editor(s)

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