عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Radiation protection and the selection of suitable materials to reduce radiation effects is one of the important branches of medical science and radiation. In this paper, the mass attenuation coefficients, half value layer thicknesses and thicknesses of 0/5 mm lead of polyvinyl chloride (PVC) composites containing Nano and micro-particles of copper oxide are calculated using experimental method for different voltages of 40, 60and 80 kVp of X-ray. The results show that at 40 kVp and 60 kVp, composites containing nanoparticles have a better protective effect than composites containing microparticles, but at 80 kV, composites have better protective than micro-particles. Also, the mass attenuation coefficient of copper oxide composite was calculated using MCNP simulation for X-ray tube by voltage of 80kVp. The results of MCNP code were found to be in agreement with theoretical X-com. The results showed that in 40 kVp there is a difference between these two values, which is higher than that of 80 kVp.