عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this paper, abundance percent of copper element in the soil sample provided from mine sungun of Ahar, is determined by activating it in front of an Am-Be neutron source and counting it's activity using 3 inch NaI(Tl) detector. For this purpose, first, a sample of copper powder (with a purity of 99%) is placed in front of the Am-Be neutron source in different distances and then it's activity is determined using NaI(Tl) detector in order to obtain the distance that maximum activity is achieved at it. Then, at this optimal distance, soil samples containing specific percentages of copper that we provided them precisely, are exposed to neutron radiation and their obtained activity is compared to activity that is obtained for standard sample and accuracy of analysis is calculated. Measurements show that using NaI(Tl) detector, one can determine abundance of copper element in soil with accuracy up to 0.2 percent.