Abstract

The applicability of the γ-rays from the reaction 12C(p, p′γ) 12C and 16O(p, p′γ) 16O for carbon and oxygen detection has been investigated. The optimum proton energy region for the analyses was determined. Various system construction materials were tested for obtaining a minimum background. Kapton, Havar and Ni exit foils were tested and the advantages of each are discussed. In the present external beam configuration the bombardments are carried out in a He atmosphere. By optimizing the method, carbon concentrations at the 100 ppm level and oxygen concentrations at the 300 ppm level are detectable.

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