Investigation of the (3He,2He) reaction: Reaction mechanism and application to the reaction on 28Si

The single-neutron stripping reaction 28Si(3He, 2He)29Si has been studied at Esub(3He) = 52 MeV. In order to deduce absolute cross sections the proton relative energy distribution has been measured as well. The reaction mechanism has been formulated analogously to that for the (3He,d) reaction. Two relative energy dependent functions have been introduced, which contain three-body and additional reaction mechanism information, respectively. Angular distributions are well described by single-step DWBA calculations, yielding spectroscopic factors in good agreement with those from other reactions. The optical-model potential for 2He is discussed. The use of a folding optical-model potential is found to be important in describing the cross section dependence on the internal 2He energy. (orig.)