Evaluation of Compton contamination events in an actively shielded GE gamma-ray detector

Details Evaluation of Compton contamination events in an actively shielded GE gamma-ray detector Evaluation of Compton contamination events in an actively shielded GE gamma-ray detector

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.112...75o&link_type=abstract

Astrophysics and Space Science (ISSN 0004- 640X), vol. 112, no. 1, May 1985, p. 75-81.

Astronomy and Astrophysics

Astronomy

Compton Effect, Contamination, Gamma Ray Astronomy, Gamma Ray Telescopes, Germanium, Crab Nebula, Energy Spectra, Radiation Detectors

Scientific paper

An expression has been developed which gives the flux of unvetoed Compton-contamination events for a particular source measurement using an actively shielded gamma-ray telescope. By use of suitable approximations, this expression reduces to simpler functions which have been evaluated for some recent measurements of the Crab nebula. It has been shown that for the exposures typical of balloon-borne observations, and a reasonably efficient anti-coincidence system (greater than 50 percent), the non-photopeak component of the detected source energy-loss spectrum can be neglected.

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