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Gamma-ray shielding properties of high dense glassy system (bismuth fluoro-lead-borate doped with chromium (III) ions) with composition of (25-x)PbF 2 –25Bi 2 O 3 –49.8B 2 O 3 –0.2Cr 2 O 3 - xCaF 2 - (where x = 0 (S1), 5 (S2), 10 (S3), 15 (S4), 20 (S5), and 25 (S6) mol%) have been investigated. Phy-X/PSD software was used to achieve this purpose in photon energy range (0.15–15 MeV). Additionally, the superior glass shield sample was compared to several types of glass and concrete shields. Results revealed that each photon energy value investigated the maximum linear attenuation coefficient (µ m) values for the S1 glass sample with the heaviest element contribution in its structure were detected at the maximum level. In terms of the µ m , there was a difference of roughly 0.5 cm2/g in the S1 and S6 glasses. The S1 sample with the highest µ m also had the lowest T 0.5 and mean free path (λ). The heavy element contribution to the S1 sample was reflected in the effective atomic number values, which provided the S1 sample with the highest Z eff values. Values of exposure and energy absorption buildup factors (EBF and EABF) were confirmed that the sample S1 has the minimum values. Our findings showed that S1 sample may be considered as superior gamma-ray shielding properties among all studied glasses. • Bismuth fluoro-lead-borate doped with chromium (III) ions glasses have been fabricated. • Phy-X/PSD software was applied. • Radiation shielding capacities have been examined. • Glasses were superior for gamma-ray shielding. [ABSTRACT FROM AUTHOR]