Recent development of the continuum-discretized coupled-channels method (CDCC) is reported with introducing the eikonal CDCC method (E-CDCC) and four-body CDCC. The former is applied to analysis of 8B breakup by 208Pb at 52 A MeV and the astrophysical factor S17 (0) for the 7Be(p, γ)8B reaction is extracted with the asymptotic normalization coefficient method. We obtain S17 (0) = 20.9-1.9+2.0 eV b, which is significantly larger than the previous one, S17 (0) = 18.9 ± 1.8 eV b, determined from an analysis with the virtual photon theory. The difference between the two values is found to be due to the contributions from nuclear breakup and higher-order processes. The latter, four-body CDCC, is applied to 6He+209Bi scattering near the Coulomb barrier energy and found to reproduce the elastic cross sections well, in contrast to the standard three-body CDCC. Accurate treatment of the three-body continuum states of 6He turns out to be essential to correctly describe the 6He+209Bi scattering.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics