Abstract
A large number of products of transfer reactions has been identified when bombarding natural Ag and 109Ag by 86 MeV 12C and by 78 and 113 MeV 14N ions. From the analysis of angular and energy distributions, it has been shown that both multi-nucleon and single-nucleon transfer processes are ruled by two different mechanisms. (i) When the products are formed at the ground state or at relatively low excited states, the angular distribution can be interpreted in terms of a DWBA analysis of a quasi-elastic scattering. This first mechanism is responsible for the preferential emission at a particular angle which depends on the bombarding energy. (ii) When the products are formed with a very large defect of kinetic energy (more than 10 MeV), they are observed at very small angles. A qualitative explanation of this “grazing” process is tentatively given. The relative importance of the second mechanism is higher for a large number of transferred nucleons than for single-nucleon transfers and increases with the bombarding energy.
Published Version
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