Microscopic calculation of inelastic proton scattering off ${}^{18}$O, ${}^{10}$Be, ${}^{12}$Be, and ${}^{16}$C for study of neutron excitation in neutron-rich nuclei

Abstract

The microscopic coupled-channel calculation of inelastic proton scattering is performed for the study of neutron excitations in $2_1^{+}$ states of ${}^{18}$O, ${}^{10}$Be, ${}^{12}$Be, and ${}^{16}$C. Proton-nucleus potentials in the coupled-channel calculation are microscopically derived by folding the Melbourne $g$-matrix $NN$ interaction with matter and transition densities of target nuclei obtained by the structure model calculation of antisymmetrized molecular dynamics. The calculated result reasonably reproduces the elastic and inelastic proton scattering cross sections, and supports the dominant contribution of neutron in the $2_1^{+}$ excitation of ${}^{12}$Be and ${}^{16}$C as well as ${}^{18}$O. Sensitivity of the inelastic scattering cross sections to the neutron transition density is discussed. The exotic feature of the neutron transition density with the amplitude in the outer region in ${}^{12}$Be and ${}^{16}$C is focused.

arXiv comment15 pages, 13 figures

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• Breakup effects in the ${}^{16}\mathrm{C}+p$ and ${}^{16}\mathrm{C}+d$ reactions
• Low-energy dipole excitation mode in ${}^{18}$O with antisymmetrized molecular dynamics