GAMMA RAY SHIELDING PARAMETER OF BARIUM-BORO-TELLURITE GLASS

Boro-tellurite glasses have recently been attracting the attention of several researchers as a tremendous optical device and shielding material. In this work, we have synthesized borotellurite glasses with barium oxide (BaO) by melt quenching technique. The structural and shielding property changes after adding of barium oxide in boro-tellurite glass were studied using Fourier Transform Infrared (FTIR) and Lead Equivalent Thickness measurement (LET), respectively. The results show that the bismuth oxide increases glass density, changes the glass structure, and increases the radiation shielding properties. Changes in the glass structure are due to atomic rearrangements and formation of nonbridging oxygen (NBO). The density of boro-tellurite glass system increased when BaO content increased, which is due to the high molecular weight of BaO and the increasing number of non-bridging oxygen (NBO) atoms in the glass structure. In addition, the mass attenuation coefficient, μm of the glass system increases as BaO concentration increases and the half value layer, HVL and mean free path, MFP of 30BaBTe glass is better than some standard concretes.