Measurement and hybrid model analysis of integral excitation functions for proton-induced reactions on vanadium, manganese and cobalt up to 200 MeV

Abstract

Integral excitation functions for p-induced reactions on V, Mn and Co were measured for p-energies between 45 and 200 MeV. 30 excitation functions for the production of radionuclides with 43 ⩽ A ⩽ 60 were determined. For most of the reactions, ranging from (p, n) to (p, 7p9n), scarcely no experimental data existed before now in this energy region. Together with earlier measurements the new data provide a consistent set of excitation functions of p-induced reactions from 0 to 200 MeV for these elements. A detailed hybrid model analysis was performed using the recent code ALICE LIVERMORE 82, which in contrast to earlier formulations of the model takes into account experimental mass data, multiple preequilibrium nucleon emission and non-integer initial excitation numbers. In general, the a priori calculations satisfactorily reproduce the experimental excitation functions. Some discrepancies have to be attributed to the neglect of direct processes and of preequilibrium emission of α-particles. The reasons for a complete failure of the calculations in some exceptional cases are still not clear.