STUDY OF THE REACTION IN-115(C-12, B-11)SN-116

The proton-stripping reaction (In(C, B)Sn)-In-115-C-12-B-11-Sn-116 has been studied using 84 MeV C-12 beams. Two groups of states centred at 4.2 and 5.5 MeV excitation in Sn-116 probably have configurations inv olving particle-hole states of (1g9/2(-1), 1g7/2) and (1g9/2(1), 1h11/ 2) origin. The identification is based on the published light-ion-indu ced proton-transfer studies as well as the shell-model calculations. T he angular distributions and the excitation functions for the two grou ps have been measured and analysed in terms of the finite-range DWBA. The optical potentials in the entrance channel have been determined by fitting the measured elastic angular distribution data. The consisten cy of the normalisation constant determined indicates that the dissipa tion mechanism, at least, for the one-nucleon transfer stage proceeds predominantly through the direct reaction mechanism.