Abstract
The main objective of the present work was to assess the gamma radiation shielding competencies and gamma radiation transmission factors (TFs) for some tellurite glasses in the form of Bi2O3–TeO2–Na2O–TiO2–ZnO. MCNPX general-purpose Monte Carlo code (version 2.6.0) was utilized for the determination of TF values at various well-known radioisotope energies for different glass thicknesses from 0.5 cm to 3 cm. Moreover, some important gamma ray shielding properties were also determined in the 0.015–15 MeV energy range. The results show that glass densities were improved from 5.401 g/cm3 to 6.138 g·cm3 as a function of Bi2O3 increment in the glass composition. A S5 glass sample with the maximum Bi2O3 additive was reported with superior gamma ray shielding properties among the studied glasses. It can be concluded that Bi2O3 can be used as a functional tool in terms of improving glass density and, accordingly, gamma ray shielding attenuation properties of tellurite glasses, where the role Bi2O3 is also critical for other material properties, such as structural, optical, and mechanical.
Highlights
Lead-based glasses have historically been used for γ-ray radiation shielding and protection against other ionizing human harmful radiation due to their broad physical and chemical properties
Owing to their poisonous nature, lead-based glasses are no longer widely used in many radiation shielding applications
Five samples of bismuth–tellurite–sodium–titania–zinc with chemical formula xBi2 O3 (80-x)TeO2 -5Na2 O-5TiO2 -10ZnO, where x = 5–15 mol% were selected from previous Ref. [31]
Summary
Lead-based glasses have historically been used for γ-ray radiation shielding and protection against other ionizing human harmful radiation due to their broad physical and chemical properties. Owing to their poisonous nature, lead-based glasses are no longer widely used in many radiation shielding applications. Many attempts to replace them with lead-free materials or radiation-shielding glasses have been documented in the literature. Heavy metal oxide-based glasses, such as bismuth oxides, are examples of these materials that have already had an influence and relevance in many industrial applications [1,2]
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