Elastic scattering of 13C and 14C isotopes on a 208Pb target at energies of approximately five times the Coulomb barriers* *Supported by the National Natural Science Foundation of China (12122511, 12105330), the Youth Innovation Promotion Association CAS (2020411), and funding from the State Key Laboratory of Nuclear Physics and Technology, Peking University (NPT2023KFY04). V. G. would like to thank CNPq

Abstract

The elastic scattering angular distributions of C at 340 MeV and C at 294 MeV and 342 MeV on a Pb target, which correspond to approximately five times the Coulomb barriers, were measured at the Radioactive Ion Beam Line in Lanzhou. The data were analyzed within the optical model and continuum-discretized coupled-channels (CDCC) framework, and the results of both calculations could effectively account for the experimental data. The differential cross sections of elastic scattering revealed no particular suppression at the Coulomb nuclear interference peak angles, suggesting that the breakup coupling effects on the elastic scattering angular distributions were negligibly small in this incident energy region. The contributions from the couplings with inelastic states to the elastic cross sections were of minor importance within the angular range covered by these experiments.