Extended optical model analyses of ${}^{11}$Be+${}^{197}$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-channes i.e. elastic, inelastic, and breakup cross sections, at $E_{\text{c.m.}}$=29.6 MeV and $E_{\text{c.m.}}$=37.1 MeV. From the extracted parameter sets using ${\chi }^2$ 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.