TRANSFER AMPLITUDE AND ANGULAR-DISTRIBUTIONS IN HEAVY-ION REACTIONS

Semiclassical conditions appropriate to a grazing collision have been used to study the dependence of the transfer amplitude on the distance of closest approach, d, for direct reactions. It is found to fall off exponentially with increasing d, the decay constant being a function of the initial and final binding energies of the transferred particle. The dependence on the z projections of the angular momenta of the particle separates out as a multiplicative constant. This simplified form of the transfer amplitude is used to obtain an analytic expression for angular distributions. Comparison is made with experiment for the reaction 26Mg(11B, 10B)27Mg at 114 MeV laboratory energy.