The comparative study aims to investigate the dose received by materials exposed to different fluence of neutron radiation. The research is significant in the field of nuclear energy and radiation protection, as neutron radiation is one of the most common types of radiation produced by nuclear reactions. In this study, various materials are exposed to different fluence of neutron radiation, and the dose received by each material was measured using dosimeters. The results showed that the dose received by the materials increased with increasing fluence of neutron radiation. Furthermore, the study found that the dose-response relationship different between different materials, highlighting the importance of material selection in radiation protection. The study concludes that a better understanding of the dose-response relationship for different materials can help in the development of more effective radiation shielding materials and improve radiation safety in various applications.

The mechanical properties of previously known nickel nitrides, Ni6N-R-3, Ni3N-P6322, Ni3N-Cmcm, and Ni7N3-Pbca, were calculated from first principles using density functional theory at various pressures. Considered nickel nitrides are mechanically stable in the entire considered pressure ranges. It was shown that all phases are ductile and have low Vickers hardness values which are below the minimal criteria of hard materials, HV > 20 GPa. In addition, the fracture toughness was estimated.