Fabrication of colorless phosphate glass doped with Bi2O3 for lead-free radiation shielding in X-Rayand gamma-rays medical applications: A study using PHITS Monte Carlo simulation and experimental analysis

초록

In this study, glasses with the composition (65-x)P2O5-5CaF2-10NaF-10KF-10AlF3-xBi2O3 (x = 0, 5, 10, 15 mol %) were synthesized using a conventional melt-quenching technique followed by melting at 1200 degrees C for 3 hrsand annealing 500 degrees C for 3 hrs, aimed at photon shielding applications. The resulting glasses remained transparent and colorless glasses, with increasing of Bi2O3 concentrations. Radiation shielding parameters (linear attenuation coefficient (mu), mass attenuation coefficients (mu m), effective atomic number (Zeff), effective electron density (Neff), and half-value layer (HVL)) with increasing of Bi2O3 concentrations in glasses were studied using gamma and Xray sources. Using gamma sources, the mu m,Zeff, and Neff increased, while HVL decreased. X-ray shielding performance showed that as the mu m increased, the HVL decreased. As the Bi2O3 concentrations increase, the concentration at 15 mol% of Bi2O3 has shown the best radiation shielding performance when compared to standard materials at 120 kVp. Consequently, the concentration at 15 mol% of Bi2O3 in glass systems are promising candidates for radiation shielding materials innovation in future.

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