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Semi-empirical formula for $$gamma$$-ray streaming through bend duct with arbitrary flexion angles

Matsuda, Norihiro  ; Sasamoto, Nobuo

Semi-empirical formulas for the duct streaming of $$gamma$$-rays are useful as ever for application to practical shielding designs. Based on the algorithm of the DIN's formula, a new semi-empirical formula has been developed. Major improvements are the re-definition of the duct leg region, introduction of the $$gamma$$-ray energy dependent total dose albedo and formulation for the bend duct with arbitrary flexion angles. Validity of the formula was verified through benchmark analyses of $$gamma$$-ray streaming through three-legged duct with rectangular bend and the one with the flexion angle of 137$$^{circ}$$.

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Category:Environmental Sciences

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