Measurement of neutron activation cross sections by p-Be semi-monoenergetic neutrons

Neutron activation cross sections of C, Na, Mg, Al, Si, Ca, V, Cr, Mn, Cu, Zn and Au, which are mostly constituents of accelerator and building materials, in the energy range of 10 to 40 MeV, by using semi-monoenergetic neutrons from the Be(p,n) reaction. A proton beam of energies of 20, 22.5, 25, 27.5, 30, 32,5, 35, 37.5 and 40 MeV hits the 1-mm and 2-mm thick Be targets which are backed by the water coolant. The induced gamma-ray activities of the irradiated samples were measured with a pure Ge detector and of long-lived 26Al were done by accelerator mass spectrometry. The activation cross section data could be obtained by unfolding technique. (author)