CALCULATION OF THE ABSORPTION OF TH $gamma$-ENERGY IN HETEROGENEOUS MACROSYSTEMSCALCULATION OF THE ABSORPTION OF TH $gamma$-ENERGY IN HETEROGENEOUS MACROSYSTEMS

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 Author Terent'ev, B. M. ♦ El'tekov, V. A. ♦ Golenko, D. I. Source United States Department of Energy Office of Scientific and Technical Information Content type Text Language Russian
 Subject Keyword BIOLOGY AND MEDICINE ♦ ADSORPTION ♦ AIR ♦ BRASS ♦ COBALT 60 ♦ COMPTON EFFECT ♦ COMPUTERS ♦ CONFIGURATION ♦ COPPER ALLOYS ♦ DISTRIBUTION ♦ ENERGY ♦ GAMMA RADIATION ♦ GAMMA SOURCES ♦ MATHEMATICS ♦ MEDICINE ♦ MOCKUP ♦ MONTE CARLO METHOD ♦ PARTICLE TRACKS ♦ PLEXIGLAS ♦ POLYMERS ♦ QUANTUM MECHANICS ♦ RADIOBIOLOGY ♦ SCATTERING ♦ WATER ♦ ZINC ALLOYS Abstract Determination of the total absorbed dose of gamma radiation in the irradiated system represents one of the problems of radiobiological and medical studies. An attempt was made to clarify the problem by determining the distribution of the absorbed energy between the various components of the medium, using a Monte Carlo type calculation on the Strael3 computer. The complex heterogeneous system considered consisted of cylindrical, water-equivalent bodies, cylindrical gamma sources placed either within or outside of the irradiated bodies, and auxiliary components. The average tion from the Co/sup 60/ source was 1.25 Mev. The calculation involved the creation of a model of the generation and the trajectory of a gamma quantum and the determination of the Compton scattering and allowed the efficiency coefficients in air, water, Plexiglas, and brass to be determined. Treatment of 200 to 300 tracks was found to yield statistically meaningful values. Results of this semi-empirical method agreed with previously obtained experimental data. (TTT) Educational Use Research Learning Resource Type Article Publisher Date 1963-11-01 Journal At. Energ. Volume Number 15