The influence of PbO and Bi2O3 on the radiation shielding and elastic features for different glasses

The radiation shielding effects and elastic properties of adding lead (Pb) and bismuth (Bi) to glasses was analyzed. Six different glasses, coded as G1-G6, were simulated with varying compositions of bismuth oxide and lead oxide, with G1 having the lowest density and G6 hav-ing the greatest. MCNP-5 code was used to calculate the mass attenuation coefficient, half value layer, tenth value layer, and mean free path of the glasses, the latter of which was com-pared with other radiation shields. These parameters were investigated between 0.015 MeV and 15 MeV. The bond compression model was utilized to analyze various parameters that describe the elastic properties of the glass samples. From the ultrasonic wave measurement result, the substitution of PbO and Bi2O3 which working as a network modifier towards SiO2 glass systems would break up the Si-O-Si bonds along with all the formation of non-bridging oxygen's which give the impact in the elastic moduli analysis of the glasses. (C) 2020 The Authors. Published by Elsevier B.V.