Computer Science
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978kosis..16..301s&link_type=abstract
Kosmicheskie Issledovaniia, vol. 16, Mar.-Apr. 1978, p. 301-306. In Russian.
Computer Science
1
Gamma Rays, Lunar Surface, Mars Surface, Surface Properties, Isotropic Media, Planetary Atmospheres, Point Sources, Radiation Sources, Topography
Scientific paper
Gamma-ray fluxes from a spherical layer with uniformly distributed isotropic point source of gamma radiation are computed. Gamma-ray flux densities over the energy range from 1 to 5 MeV are given for heights of 0.1 to 10,000 km above the surfaces of the moon and Mars in the case of a specific source intensity of 1 quantum/cu cm per sec. The effect of a planetary atmosphere on detectable gamma radiation is examined. It is noted that the results can be used to scale the gamma-ray flux, measured from a specific distance, to any height above a planetary surface and also to analyze the gamma-ray spectra due to both decay of natural radioisotopes and high-energy cosmic-ray interactions with rocks. The effect of topography on gamma-ray flux is investigated for a radiating layer with uniformly distributed sources, one mountain, and highlands.
Manvelian O. S.
Moskaleva L. P.
Surkov Iu. A.
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