Abstract
Lead silicate glasses are used to absorb electromagnetic waves. This work investigates the radiation shielding properties of a xSiO2.(1-x)PbO2 glass system containing 5 and 10 mol% of CaO and B2O3. Analyses for characterization include XRD, SEM, EDAX, DRS (UV–Vis), and density analyses. Here, DRS (UV–Vis) analysis is used to investigate the absorption value in the range of 200–900 nm, and XCOM software is used to investigate the γ-ray wavelength. UV–Vis analysis specifies that the absorption value in the UV-ray wavelength increases by increasing the contents of CaO and B2O3, while the XCOM software shows that the absorption value in the γ-ray wavelength decreases with the addition of CaO and B2O3. It seems that the effect of different oxides on the properties of lead silicate glasses is complex and depends on the position of the elements. The results show that glass transparency decreases with the addition of CaO and B2O3. The mechanism of the addition of CaO and B2O3 is discussed and compared with the results of other dopants such as ZnO and BaO in this glass. In this research, for the first time, the “inner-atomic” and “outer-atomic” perspectives are presented and discussed to justify the obtained results.
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