Physics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984kosis..22..950a&link_type=abstract
Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 22, Nov.-Dec. 1984, p. 950, 951. In Russian.
Physics
Background Radiation, Collimators, Gamma Ray Telescopes, Angular Resolution, Cosmic Rays, Particle Interactions
Scientific paper
Coding collimators are used to improve the angular resolution of gamma-ray telescopes at energies above 50 MeV. However, the interaction of cosmic rays with the collimator material can lead to the appearance of a gramma-ray background flux which can have a deleterious effect on measurement efficiency. An experiment was performed on the Salyut-6-Soyuz spacecraft system with the Elena-F small-scale gamma-ray telescope in order to measure the magnitude of this background. It is shown that, even at a zenith angle of approximately zero degrees (the angle at which the gamma-ray observations are made), the coding collimator has only an insignificant effect on the background conditions.
Aleksandrov A. P.
Berezovoi A. N.
Dmitrenko Valery V.
Galper Arkady M.
Grachev V. M.
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