Abstract

The properties of energy distributions resulting from transmission of gamma rays through finite cylindrical barriers were studied using a modified version of the MORSE Monte Carlo transport code. Systematic studies were carried out to investigate the effects of density, composition, source energy, and cylinder diameter on the scattered and unscattered flux. In addition the average number of collisions and the contribution of the single-, double-, and triple- scattered photons were calculated for each run. It was found that for the same energy group, the intensity of the scattered flux reaches a maximum at a density that depended directly on the leakage probability but only slightly on composition. The correspondence between the Monte Carlo simulation and experimental results was found to be good. (auth)

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