Gamma Shielding Behavior of Zinc Doped Sodium Bismuth Borate Glass xZnO-(15-x)-Na2O-15Bi2O3-70B2O3
Keywords:
Radiation, Shielding, Bismuth, Borate, Glass, Density, EnergyAbstract
The radiation shielding properties of zinc doped sodium bismuth borate glasses were analyzed using Phy-X/PSD. The chemical composition of glass xZnO-(15-x)-Na2O-15Bi2O3-70B2O3 with 0 ≤ x ≤ 12 mol % glass, and are coded as ZNBB1, ZNBB2, ZNBB3, ZNBB4, and ZNBB5 in increasing xZnO content. Phy-X/PSD was used to determine the mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), and half value layer (HVL), tenth value layer (TVL), and mean free path (MFP) of the investigated glasses. The maximum values for all the glasses can be observed at the lowest tested energy, 0.015 MeV and are equal to 27.017, 35.330, 42.036, 47.560, 52.190 (cm2/g) for the ZNBB1, ZNBB2, ZNBB3, ZNBB4, and ZNBB5 glasses, respectively. At this energy, the MAC of the glasses can be observed to increase as the Zinc oxide concentration of the sample increases, which is due to the increase in density that correlates with B2O3 content. The minimum HVL values occurred at the lowest tested energy, 0.15 MeV, and decreased with decreasing energy, meaning that the glasses are more effective at lower energies. The results proved that the glass with the highest content of zinc oxide, has the higher density with greatest potential for radiation shielding applications.
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