Actions for A positron annihilation radiation telescope using Laue diffraction in a crystal lens [electronic resource].

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A positron annihilation radiation telescope using Laue diffraction in a crystal lens [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
20 pages : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We present a new type of gamma-ray telescope featuring a Laue diffraction lens, a detector module with a 3-by-3 germanium array, and a balloon gondola stabilized to 5 arc sec pointing accuracy. The instrument`s lens is designed to collect 511 keV photons on its 150 CM² effective area and focus them onto a small detector having only ≈14 CM³ of equivalent volume for background noise. As a result, this telescope overcomes the mass-sensitivity impasse of present detectors in which the collection areas are identical to the detection area. The sensitivity of our instrument is anticipated to be 3 × 10{sup −5} ph cm{sup −2} S{sup −1} at 511 key with an angular resolution of 15 arc sec and an energy resolution of 2 keV. These features will allow the resolve of a possible energetically narrow 511 keV positron annihilation line both energy-wise and spatially within a Galactic Center ``microquasar`` as 1El740.7-2942 or GRS1758-258. In addition to the galactic ``microquasars,`` other prime objectives include Cyg X-1, X-ray binaries, pulsars, and AGNS.
Report Numbers
E 1.99:anl/xfd/cp--79506
E 1.99: conf-9302114--1
conf-9302114--1
anl/xfd/cp--79506
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
03/01/1993.
"anl/xfd/cp--79506"
" conf-9302114--1"
"DE93012905"
International Gamma-ray Astrophysics Laboratory integral workshop,Les Diablerets (Switzerland),2-5 Feb 1993.
Smither, R.K.; von Ballmoos, P.
Funding Information
W-31109-ENG-38
View MARC record | catkey: 13826163