21 September 1994 Room temperature semiconductor detectors for hard x-ray astrophysics
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ann M. Parsons, Ann M. Parsons, Carl Michael Stahle, Carl Michael Stahle, Casey M. Lisse, Casey M. Lisse, R. Sachidananda Babu, R. Sachidananda Babu, Neil A. Gehrels, Neil A. Gehrels, Bonnard J. Teegarden, Bonnard J. Teegarden, Peter K. Shu, Peter K. Shu, } "Room temperature semiconductor detectors for hard x-ray astrophysics", Proc. SPIE 2305, Gamma-Ray Detector Physics and Applications, (21 September 1994); doi: 10.1117/12.187260; https://doi.org/10.1117/12.187260
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