Intermediate width structures in the C-12(C-12,Be-8(g.s.))O-16 reaction at E-c.m.=20 to 30 MeV

The C-12(C-12, Be-8(g.s.))O-16 reaction cross section has been measured at center-of-mass energies between 20 and 30 MeV. Intermediate width structures have been observed for the reactions leading to the ground state and two doublets of states, 6.05/6.13 MeV and 6.92/7.12 MeV, in O-16. For the Be-8(g.s.) + O-16(g.s.) channel the dominant angular momenta contributing to several structures have been deduced by the analysis of the excitation functions at selected center-of-mass angles. Correlations between the structures in the Be-8(g.s.) + O-16(g.s.) channel and in other inelastic scattering channels in the E-c.m. = 30 MeV region are discussed. An interpretation of the resonances in terms of current structural models is given.