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The GRAD high-altitude balloon flight over AntarcticaThe Gamma Ray Advanced Detector (GRAD) consists of a n-type germanium detector inside an active bismuth-germanate Compton and charged particle shield with additional active plastic shielding across the aperture. It will be flown on a high-altitude balloon at 36 km altitude at a latitude of 78 deg S over Antarctica for observations of gamma radiation emitted by the radioactive decay of Co-56 in the supernova SN1987A, for assessment of the performance of bismuth-germanate scintillation material in the radiation environment of near space, for gathering information on the gamma-ray background over Antarctica, and for testing fault-tolerant software.
Document ID
19900038273
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Eichhorn, G.
(Florida, University Gainesville, United States)
Coldwell, R. L.
(Florida Univ. Gainesville, FL, United States)
Dunnam, F. E.
(Florida Univ. Gainesville, FL, United States)
Rester, A. C.
(Florida, University Alachua, United States)
Trombka, J. I.
(Florida Univ. Gainesville, FL, United States)
Starr, R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Instrumentation And Photography
Accession Number
90A25328
Funding Number(s)
CONTRACT_GRANT: N00014-87-G-1259
CONTRACT_GRANT: NSF DPP-87-15809
Distribution Limits
Public
Copyright
Other

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