Radiation shielding performance of metal oxides/EPDM rubber composites using Geant4 simulation and computational study

The mass attenuation coefficients (μ/ρ) for EPDM rubber composites filled with 200 phr of some metal oxides (Al₂O₃, CuO, CdO, Gd₂O₃ and Bi₂O₃) were simulated using Geant4 toolkit at different photon energies in the range between 0.015 and 15 MeV. To examine the precision of the simulated results³², the μ/ρ results simulated by the Geant4 code were compared to those calculated theoretically using the XCOM database and listed in Table 2 along with their relative deviations. The relative deviations (RD%) between Geant4 and XCOM values were computed using Eq. (13)