Surface transparent potentials and a coupled-channel Born-approximation study of diffractive behavior in heavy-ion induced reactions

Abstract

Coupled channel explanations, which have been offered for the diffractive behavior observed in the differential ground state-ground state cross sections of ($^{16}\mathrm{O}$, $^{18}\mathrm{O}$) reactions on Ni isotopes, are in apparent disagreement with data for transfer to the $^{18}\mathrm{O}$(${2}^{+}$) state. A study of available quasielastic reaction data, elastic, inelastic, and transfer suggests the surface-transparent potentials both can better describe the optical phenomena observed in the angular shapes and can minimize effects due to coupled channels. As a byproduct a description, which does not require a large $^{18}\mathrm{O}$($2_{1}^{}{}_{}{}^{+}$) quadrupole moment, is obtained for the troublesome angular distribution in $^{18}\mathrm{O}$ + $^{58}\mathrm{Ni}$ inelastic scattering.[NUCLEAR REACTIONS CCBA analysis ($^{16}\mathrm{O}$, $^{18}\mathrm{O}$) reaction on Ni isotopes and all related quasielastic processes. Dependence on optical potentials examined.]