Transmission of Scattered Gamma-rays Through Concrete and Iron Slabs
- 1 May 1961
- journal article
- research article
- Published by Wolters Kluwer Health in Health Physics
- Vol. 5 (3) , 126-141
- https://doi.org/10.1097/00004032-196105000-00004
Abstract
The penetration of gamma-rays undergoing one or more scatterings in concrete and iron of various slab thicknesses (3.75−60.0 g/cm2) has been investigated by the Monte Carlo technique. Radiation with energy of 350, 660 and 1250 keV and also the gamma-ray spectra produced by the products (omitting volatile materials) of U235 fission at 1.12 and 23.8 hr after fission(1) were assumed to be incident on the medium at angles of cos teta0 = 0, 0.25, 0.50, 0.75 and 1.0. The case histories of 5000 photons were followed on the IBM 704 digital computer. The information obtained included: (1) Number and energy transmitted. (2) The energy distribution of the transmitted radiation integrated over all directions. (3) The angular distribution integrated over all energies. (4) The angular distribution of the transmitted energy. (5) The angular distribution of the transmitted “dose”. These computed quantities refer to transmitted current and an approximation is given for determining flux density. Comparisons are made with other theories and an experiment performed at USNRDL.Keywords
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