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Backscattering of gamma rays by barriers from various media

Conference · · Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)
OSTI ID:7209634
Quantitative data about albedo of gamma radiation must be known to solve some problems of radiation shielding, radiometry, nuclear instruments. Spatial-energy, differential and integral characteristics of gamma rays albedo for the case of the barriers of different thicknesses from beryllium, graphite, aluminium, concrete, iron, tin, and lead were determined both experimentally and by means of Monte Carlo method. Energies of gamma rays from the point isotropic source and of monodirectional beam were 145, 279, 511, 662, 1000 and 1250 keV. Spectral-angular distribution of back-scattered gamma rays escaping from various portions of the barrier surface as a function of thickness and material of barrier, distance from the source, geometry of the source and energy of primary gamma radiation was also investigated. Systematized data about differential and integral albedo of gamma rays of various energies for the case of barriers of different thickness from various media are presented in the form convenient for practical uses.
Research Organization:
Gorki State Univ., USSR
OSTI ID:
7209634
Conference Information:
Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Journal Volume: 461
Country of Publication:
United States
Language:
English