Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..38...19w&link_type=abstract
Astrophysics and Space Science, vol. 38, Nov. 1975, p. 19-27.
Astronomy and Astrophysics
Astrophysics
3
Compton Effect, Gamma Rays, Neutron Distribution, Particle Telescopes, Proton Flux Density, Albedo, Alpha Particles, Background Radiation, Carbon, Cosmic Rays
Scientific paper
Gamma-ray background counting rates encountered in astronomical observations are calculated for a double Compton-scatter telescope. Backgrounds not eliminated by the usual growth curve could be produced by albedo neutrons, cosmic ray protons interacting with the carbon and hydrogen of the detector, or both. These backgrounds consist of the albedo neutron-carbon interaction gamma-rays, cosmic-ray proton-interaction delayed gamma rays, and the moderated albedo neutron-proton photo-capture gamma rays. It is decisive to know the contribution of these backgrounds, because they must be subtracted before the cosmic diffuse flux can be determined. Estimates of the neutron-induced background events in a Compton telescope show that they might contribute a considerable fraction of the counting rate.
Schoenfelder Volker
White Steven R.
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