¹ Department of Physics, College of Education for Pure Sciences, Tikrit University, Tikrit 34001, Iraq

* Correspondence: muhsin.astro@tu.edu.iq

In this work, the gamma-ray attenuation characteristics of epoxy resin composites reinforced with potassium chloride (KCl) were experimentally investigated. Different weight fractions of potassium chloride particles were tested to see how they affected the way gamma rays were absorbed. The acquired gamma ray spectra resulted from channels of americium, cesium and radium through a thallium-doped sodium iodide spectrometer (NaI(Th)). The detector was placed 15 cm from the source and collected for 900 s that were long enough to distinguish the light peak count, which corresponds to the emitted gamma photon.The optimal results among equivalent tissues corresponded to the 10% reinforcement ratio samples in measurements intended to obtain linear and mass attenuation coefficients. Large discrepancies were observed, but the relative differences between those outcomes and ICRU-44 values did not exceed 7% and demonstrated high potentials of these materials as a replacement for conventional radiation protective and biological ones.