Mechanisms involved in the production of the A - 3 residual nucleus by p2n, dn and t emission in 7Li-induced nuclear reactions

Abstract The competition between p2n, dn and t emission for three 7 Li-induced reactions on 19 F, 30 Si and 51 V targets as well as the absolute p2n, dn and t emission cross sections in the reaction 19 F + 7 Li have been measured, each at several bombarding energies, and compared with relevant statistical-model calculations. This comparison, indicating that at least one of the dn and p2n exit channels is induced with significant strength by a non-statistical mechanism, suggests that, in addition to the traditionally expected direct α transfer and evaporation, a third non-statistical reaction mechanism is involved even at very low bombarding energies. The characteristics of this third mechanism are presented and discussed.