Abstract
This paper aims to study the radiation shielding properties of lanthanide glasses, according to the formula xTiO2-51La2O3-(24-x) B2O3–8Gd2O3-8Nb2O5-6ZrO2-3SiO2 (x= 0, 4, 8, 12, 16, wt.%). Using FLUKA Monte Carlo code, the mass attenuation coefficients (MAC), half-value layers (HVL), and effective atomic numbers (Zeff) of the lanthanide glasses were estimated at medical diagnostic energies (between 20 and 150 keV). The MACs of the glasses are between 0.5183 and 24.407 cm2/g for 0Ti, 0.5215-24.788 cm2/g for 4Ti, 0.5193-25.161 cm2/g for 8Ti, 0.5163-25.529 cm2/g for 12Ti, and 0.5183-25.916 cm2/g for 16Ti. These results are consistent with the Phy-X theoretical database (with a percentage difference below 3 %). The lanthanide glasses showed good photon shielding ability compared to lead concrete, and RS-360 & RS-253-G18 commercial glasses, commonly used shielding materials. In this work, 16Ti possesses the highest, lowest, and highest values of MAC, HVL, and Zeff, respectively, at the various energies investigated, which implies that the 16Ti sample has better shielding performance. All in all, this work demonstrated that adding TiO2 to the glass samples could provide preferable shielding features.
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