Abstract
Due to the high demand for protective materials against ionizing radiations such as gamma rays, X-rays and charged particles, it is necessary to focus more attention on several ways to improve the efficiency of the already existing radiation shielding materials. In the present study, experimental and theoretical approaches were followed to investigate the gamma ray attenuation performance of the bismuth tellurite glass composed of molybdenum oxide. 20MoO3-xBi2O3-(80-x)TeO2 was prepared by melt-quenching process with various compositions of Bi2O3. Absence of sharp peak in the XRD spectra revealed the amorphous nature of the 20MoO3-xBi2O3-(80-x)TeO2. Densities of the prepared 20MoO3-xBi2O3-(80-x)TeO2 was found to vary directly with Bi2O3 content. Additionally, Zeff significantly improved as a result of increase in mol% of Bi2O3 from 10 mol% to 25 mol%. Lowest values of MFP was obtained with MoBiTe4 which has the highest density of 4.819 g/cm3, hence demonstrated better gamma ray attenuation than other three samples. The current study found Bi2O3 in the 20MoO3-xBi2O3-(80-x)TeO2 good for gamma ray attenuation in the lower energy range.
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