Theoretical Calculation of Gamma-Ray and Neutron Shielding Properties for CsPbBr₃-Polypropylene Composite Material

The impact of CsPbBr₃, known for its high atomic number and cross section with neutrons, on the gamma-ray and neutron shielding properties of CsPbBr₃-polypropylene (PP) composite material was investigated in this study. Critical shielding parameters, including linear attenuation coefficient μ, mass attenuation coefficient μ_m, half-value thickness, tenth-value layer, and mean free path (MFP), were calculated using Phy-X/PSD software. Additionally, two types of gamma-ray buildup factors, i.e., exposure buildup factor and energy absorption buildup factor, were computed within the range of 0.015 to 15 MeV for depths up to 40 MFP. Furthermore, the neutron shielding ability was evaluated by determining the neutron total effective removal cross section. The results demonstrate that the incorporation of CsPbBr₃ enhances the gamma-ray and neutron shielding characteristics of the CsPbBr₃-PP composite material.