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The Nuclear Astrophysics ExplorerThe Nuclear Astrophysics Explorer was proposed in 1986 for NASA's Explorer Concept Study Program by an international collaboration of 25 scientists from nine institutions. The one-year feasibility study began in June 1988. The Nuclear Astrophysics Explorer would obtain high resolution observations of gamma-ray lines, E/Delta E about 1000, at a sensitivity of about 0.000003 ph/sq cm s, in order to study fundamental problems in astrophysics such as nucleosynthesis, supernovae, neutron star and black-hole physics, and particle acceleration and interactions. The instrument would operate from 15 keV to 10 Mev and use a heavily shielded array of nine cooled Ge spectrometers in a very low background configuration. Its 10 deg FWHM field of view would contain a versatile coded mask system which would provide two-dimensional imaging with 4 deg resolution, one-dimensional imaging with 2 deg resolution, and efficiendt measurements of diffuse emission. An unshielded Ge spectrometer would obtain wide-field measurements of transient gamma-ray sources. The earliest possible mission would begin in 1995.
Document ID
19890037977
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Matteson, J. L.
(California, University La Jolla, United States)
Teegarden, B. J.
(California Univ. La Jolla, CA, United States)
Gehrels, N.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mahoney, W. A.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Astronautics (General)
Report/Patent Number
AIAA PAPER 89-0414
Accession Number
89A25348
Distribution Limits
Public
Copyright
Other

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