APPLIED RADIATION AND ISOTOPES, vol.94, pp.1-7, 2014 (SCI-Expanded)
Effective atomic numbers (Z(eff)) of 107 different materials of dosimetric interest have been calculated for total electron interactions in the wide energy region 10 key-1 GeV. The stopping cross sections of elements and dosimetric materials were used to calculate Z(eff) of the materials. Differences (%) in Z(eff) relative to water have been calculated in the entire energy region to evaluate the water equivalency of the used materials. Moreover, the tissue equivalent materials have been compared with the tissues and dosimetric materials in terms of Z(eff) to reveal their ability to use as tissue substitutes. Possible conclusions were drawn based on the variation of Z(eff) through the entire energy region and water and tissue equivalency comparisons in terms of Z(eff). (C) 2014 Elsevier Ltd. All rights reserved.