Computer Science
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ssi.....3..423d&link_type=abstract
Space Science Instrumentation, vol. 3, Dec. 1977, p. 423-447.
Computer Science
Atmospheric Radiation, Background Radiation, Balloon-Borne Instruments, Gamma Ray Telescopes, Neutron Counters, Compton Effect, Neutron Emission, Sensitivity
Scientific paper
The balloon-borne Double Compton Telescope, developed for the observation of low-energy (1-10 MeV) cosmic gamma rays, has been calibrated to determine its response to atmospheric secondary neutrons. The calibration procedure consisted of subjecting the detector to a continuous neutron spectrum in which neutron energy reached 140 MeV. It is noted that when neutrons struck the telescope's upper detector, events satisfying the acceptance criteria for downward-moving gamma rays were produced because reactions with carbon atoms generated gamma rays as byproducts. Telescope detection efficiency for these events was evaluated as a function of neutron energy for 45, 90, and 135-deg incident angles. Estimates of the energy distribution function were calculated. Combining calibration results and measurements of atmospheric neutron intensity, estimates of telescope counting rates were found.
Daugherty Jack
Schoenfelder Volker
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