University of Kashan Journal of Nanostructures 2251-7871 15 4 2025 10 01 Gamma Ray Attenuation Using Nanocomposites for Multiple Radioactive Sources 2112 2117 115145 10.22052/JNS.2025.04.051 EN Mohammed A. Mohmmed Salahuddin Education Directorate, Ministry of Education, Salahuddin, Iraq Anas A. Hamdi Salahuddin Education Directorate, Ministry of Education, Salahuddin, Iraq Journal Article 2025 06 05 Composites were prepared by dispersing 35 nm cobalt ferrite nanoparticles in a Bremer Epoxy resin (50/100) mixture. Various composites were formed using cobalt ferrite powder at 1 %–4 % wt. The specimens were prepared in the form of a cylindrical disc with different densities (15 mm). Density of individual samples have been calculated using dimensional analysis. Composites were screened using a Geiger counter. Mass attenuation reduction A key parameter in the study of how gamma rays interact with matter is mass attenuation. It represents the mass attenuation coefficient of gamma radiation by a material. https://jns.kashanu.ac.ir/article_115145_1596c4a7b3ad0f1ebda541870a89d494.pdf