Radiation Physics and Chemistry, cilt.237, 2025 (SCI-Expanded)
This study investigated the neutron and gamma radiation shielding capabilities of Inconel 625 (In625) composites reinforced with varying concentrations (0–25 wt%) of barium sulfate (BaSO4). The research was conducted using the Phy-X/PSD software program, and various parameters were calculated for the 0.015–15 MeV energy range. These parameters included linear attenuation coefficients (LAC), mass attenuation coefficients (MAC), tenth-value layers (TVL), half-value layers (HVL), mean free path (MFP), fast neutron removal cross-section (FNRCS), exposure buildup factors (EBFs), and effective atomic number (Zeff) values. A reduction in the weight percentage of BaSO4 within the In625 composites corresponded to an increase in their MAC and LAC values. EBF values were calculated using the Geometric Progression (G-P) fitting method for the 0.015–15 MeV range up to a penetration depth of 40 MFP. Furthermore, HVL and TVL values increased in parallel with the increasing weight percentage of the BaSO4 reinforcement element. Conversely, FNRCS values decreased due to the decreasing density resulting from increased BaSO4 content. In conclusion, the In625 (S1) composite provided the maximum gamma shielding property. This was attributed to its highest MAC and Zeff values and lowest HVL and TVL values. Additionally, In625 (S6), which included 25 wt% BaSO4 reinforcement, was found to be the best shielding material for neutrons, offering the highest FNRCS value. Thus, this research is innovative from various viewpoints, and its findings could have applications in nuclear technology, as well as in diverse industrial sectors such as defense, biomedical, and aerospace technologies.