Charge exchange (6Li, 6He) and the two-step pickup-stripping (6Li, 7Li) (7Li, 6He) excitation mode

Abstract The single-step forbidden analog 0 + →0 + transition has been observed in ( 6 Li, 6 He) on 18 O and 26 Mg. The cross section and the observed L =1 shape of the angular distribution for the 26 Mg → 26 Al 0 + , T=1 transition is analysed in terms of a single-nucleon pickup-stripping two-step process in the second order DWBA. There are indications that the single step allowed ( 6 Li, 6 He) charge exchange transitions contain large two step contributions as well.