Simulation of shielding parameters of Gd–Pb binary alloys using FLUKA code and phy-x/PSD platform

This study investigates the radiation shielding capabilities of Pb_xGd_100−x binary alloys with varying compositions (x = 10, 30, 50, 70, and 90) using the FLUKA Monte Carlo simulation and Phy-X/PSD platform. Shielding parameters such as mass attenuation coefficient (MAC), mean free path (MFP), half-value layer (HVL), and tenth-value layer (TVL) were analyzed in the energy range of 0.15 MeV–15 MeV. The results revealed strong agreement between FLUKA simulations and Phy-X/PSD data, with less than 5% deviation. Alloys with higher Pb concentrations demonstrated superior shielding properties, with Gd10Pb90 exhibiting the highest MAC and lowest MFP, HVL, and TVL values, particularly at lower energy levels. These findings confirm the potential of Gd–Pb alloys, especially Gd10Pb90, as effective materials for ionizing radiation protection. This work provides valuable insights into developing advanced shielding materials for diverse nuclear physics, medicine, and industry applications.