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Development of a Hybrid Gas Detector/Phoswich for Hard X-Ray AstronomyA hybrid detector is under development for use as a balloon-borne instrument in hard x-ray astronomy. The detector provides broad band coverage by coupling an optical avalanche chamber to a phoswich. The optical avalanche chamber yields superior instrument response at low energies while the scintillator takes over at the higher energies where the gas becomes transparent: at 25 keV, the addition of the gas chamber improves the energy resolution by a factor of 2.5 and the spatial resolution by a factor of 10 as compared to the stand-alone response of the phoswich. A half-scale prototype instrument is being constructed for test purposes and to help resolve a number of design questions involving the coupling of the two components.
Document ID
19970016443
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Pimperl, M. M.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Ramsey, B. D.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Austin, R. A.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Minamitani, T.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Weisskopf, M. C.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Grindlay, J. E.
(Harvard Coll. Observatory Cambridge, MA United States)
Lum, K. S. K.
(Harvard Coll. Observatory Cambridge, MA United States)
Manandhar, R. P.
(Harvard Coll. Observatory Cambridge, MA United States)
Date Acquired
August 17, 2013
Publication Date
July 28, 1994
Publication Information
Publication: SPIE Proceedings Series
Publisher: International Society for Optical Engineering
Volume: 2280
ISBN: 0-8194-1604-5
Subject Category
Astronomy
Report/Patent Number
NAS 1.26:203696
NASA-CR-203696
Meeting Information
Meeting: EUV, X-Ray, and Gamma-Ray Instrumentation Meeting for Astronomy
Location: San Diego, CA
Country: United States
Start Date: July 27, 1994
End Date: July 28, 1994
Accession Number
97N71513
Distribution Limits
Public
Copyright
Public Use Permitted.
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