Extended optical model analyses of $$^{11}\hbox {Be+}^{197}\hbox {Au}$$ with dynamic polarization potentials

Abstract

We discuss angular distributions of elastic, inelastic, and breakup cross sections for 11 Be + 197 Au system, which were measured at energies below and around Coulomb barrier. To this end, we employ Coulomb dipole excitation (CDE) and long-range nuclear (LRN) potential to take into account long range effects by halo nuclear system and break up effects by weakly-bound structure. We then analyze recent experimental data including 3-channels i.e. elastic, inelastic, and breakup cross sections, at E c.m. =29.6 MeV and E c.m. =37.1 MeV. From the extracted parameter sets using χ 2 analysis, we successfully reproduce the experimental angular distributions of the elastic, inelastic, and breakup cross sections for 11 Be+ 197 Au system simultaneously. Also we discuss the necessity of LRN potential around Coulomb barrier from analyzed experimental data. *