Energy dependence of the Be-8+C-13 interaction

Angular distributions of the Be-9(C-12,C-13)Be-8 reaction were measured at the beam energy of E-lab(C-12) = 65 MeV for the transitions to the ground, 3.09 MeV (1/2(+)) and 3.68 MeV (3/2(-)) + 3.85 MeV (5/2(+)) excited states of the C-13 nucleus. These data together with experimental data at the ener gies of E-lab(C-12) = 12, 15 MeV and E-lab(Be-9) = 20 MeV were analyzed wit hin the coupled reaction channels (CRC) model. The elastic and inelastic sc attering as well as one- and two-step transfers were included in the couple d channel scheme. It was found that n- and alpha-transfers dominate in thes e reactions. The energy dependence of the OM potential for the Be-8 + C-13 channel was deduced. A good description of all sets of experimental data wa s achieved. (C) 1999 Elsevier Science B.V. All rights reserved.