Pre-equilibrium alpha and nucleon emission in 59Co(α,zαypxn) reactions

Pre-equilibrium alpha and nucleon emission were studied for the excitation functions on target element cobalt up to 120 MeV employing the stacked-foil activation technique. Alpha induced reactions for the production of a few radionuclides 60,58-56Co, 54-52Mn, 51Cr, 59Fe, 57,56Ni were measured. Most of these radionuclides are produced by one or two alpha emissions and a few by nucleon emission. The excitation functions were compared with semi classical models, like the INDEX and the recently developed COMPLET which takes into account the pre-equilibrium alpha particle and multinucleon emission. In general, the shapes of the excitation functions were rather fairly reproduced with the COMPLET model and it gives a better agreement than the INDEX model for all the reactions studied in the present work. (orig.)