Analytical application of the direct observation of nuclear reactions induced by low-energy protons and leading to the emission of γ-photons,which are measured

The yields of the most characteristic photon emissions of the elements Li, Be, B, C, N, O and F were plotted for incident proton energies ranging from 400 keV to 1500 keV. The possibilities offered by the use of this direct observation method to measure the superficial concentrations of these elements are deduced. The sensitivities intrinsically obtainable with our experimental device are given and the practical possibilities of the method are discussed, allowance being made for the simultaneous presence of several of the above elements.