Abstract
A series of five glass samples have a chemical composition of (55-x) B2O3 + 5 Bi2O3 + 20SrF2 + 20Na2O + xAg2O with varied doping ratios x = 0, 1, 2, 3, and 4 mol% were fabricated using the melt quenching technique to study the effect of B2O3 replacement by Ag2O on the physical, mechanical, optical and gamma-ray shielding capacity of the fabricated glasses. The Cary 5000 UV–Vis–NIR measured the optical absorption in the wavelength range between 200 and 3000 nm. Based on the measured optical absorption, energy (direct/indirect) bandgap and Urbach energy were calculated. Moreover, the measured samples density, molar volume, packing density, dissociation energy, and mechanical properties for the fabricated glasses were calculated using the concepts of the Makishima-Mackenzie model. In this regard, the microhardness was decreased from 4.070 to 3.931 GPa with raising the Ag2O concentration. The effect of B2O3 replacement on the shielding capacity was also evaluated using the Monte Carlo simulation. The simulation results showed that the replacement of B2O3 causes a significant increase in the shielding parameters like linear attenuation coefficient and radiation shielding capacity. The best radiation shielding properties were achieved for a glass sample with 4 mol% Ag2O compound. Its linear attenuation coefficient varied between 8.091 and 0.134 cm−1, raising the gamma photon energy between 0.059 and 2.506 MeV.
Highlights
IntroductionAboud et al.[28] studied the radiation protection properties of B2O3 glass, which contains heavy metal oxides such as PbO and B i2O3, as they were able to study the effect of changing the concentration of PbO from 0 to 25 mol% on the radiation attenuation coefficients
A series of five glass samples have a chemical composition of (55-x) B2O3 + 5 Bi2O3 + 2 0SrF2 + 2 0Na2O + x Ag2O with varied doping ratios x = 0, 1, 2, 3, and 4 mol% were fabricated using the melt quenching technique to study the effect of B2O3 replacement by Ag2O on the physical, mechanical, optical and gamma-ray shielding capacity of the fabricated glasses
Such damages may result from overexposure to radiation, whether from the occurrence of radiation leakage from the devices used in radiation treatment and diagnosis, from the radioactive materials used in such field, or because of exceeding the permissible limit of radiation in this kind of treatment
Summary
Aboud et al.[28] studied the radiation protection properties of B2O3 glass, which contains heavy metal oxides such as PbO and B i2O3, as they were able to study the effect of changing the concentration of PbO from 0 to 25 mol% on the radiation attenuation coefficients. To complement the great efforts made recently, the researchers in this work have developed a new glass system containing the following oxides: B2O3, Bi2O3, SrF2, Na2O, and A g2O They made a comprehensive study of the prepared glass’s structural, optical, and radiation shielding properties
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