Simulating the radiation shielding properties of TeO2–Na2O–TiO glass system using PHITS Monte Carlo code

Abstract

Radiation has an essential role in several areas. Recent advances in radiation applications and nuclear techniques require advanced technologies for radiation protection. In this research article, 80TeO2+(20 − x) Na2O + xTiO2 (with 0 ≤ x ≤ 20 mol%) glass system is reported as a new candidate for advanced shielding applications in various nuclear facilities and sites. The shielding ability of this candidate is evaluated by using PHITS Monte Carlo code and XCOM & Phy-X approaches over a large energy scale varying between 15 keV and 15 MeV. The findings reveal that the LACs of the present TNT glass system increase in order of TNT-A < TNT-B < TBT-C < TNT-D < TNT-E for 0 ≤ x ≤ 20 mol%. The LACs of the investigated TNT glassy system are maximum at 15 keV and minimum at 6 MeV. Above 6 MeV, a notable increase is observed in the values of LACs due to the pair production process. The highest gamma dose rates of all the investigated TNT specimens occurred at 1 mm. Additionally, the shielding ability of the TNT glass system against light and heavy charged particles is estimated via total stopping power and projectile range for kinetic energy up to 15 MeV. For thermal neutrons, the total cross sections are 1.1872 cm−1, 1.24221 cm−1, 1.28809 cm−1, 1.32192 cm-1and 1.36655 cm−1 for TNT-A, TNT-B, TNT-C, TNT-D and TNT-E, respectively. Since the transmission factors (MFPs & HVLs) of the TNT glass system are lower than those of the concrete (standard radiation shield) and commercial glasses, the present TNT glass system can be developed and designed as a new shielding material for nuclear applications.