First microscopic coupled-channel calculation of $\alpha$ inelastic cross sections on ${}^{16}$O

Abstract

The $\alpha$ inelastic scattering on ${}^{16}$O is investigated with the coupled-channel calculation using the $\alpha$-nucleus coupled-channel potentials, which are microscopically derived by folding the the Melbourne $g$-matrix $NN$ interaction with the ${}^{16}$O and $\alpha$ densities. The matter and transition densities of ${}^{16}$O are calculated by a microscopic structure model of the variation after the spin-parity projections combined with the generator coordinate method of ${}^{12}$C+$\alpha$ in the framework of the antisymmetrized molecular dynamics. The calculation reproduces the observed elastic and inelastic cross sections at incident energies of $E_{\alpha }$=104 MeV, 130 MeV, 146 MeV, and 386 MeV. The coupled-channel effect on the cross sections is also discussed.

10 pages, 7 figures

References in corpus (7)

• Alpha-particle condensation in 16O via a full four-body OCM calculation
• Evidence for tetrahedral symmetry in 16O
• Evidence for an alpha cluster condensed state in 16O(alpha,alpha') at 400 MeV
• Microscopic optical potentials for ${}^4$He scattering
• Missing monopole strength of the Hoyle state in the inelastic $\alpha$+${}^{12}$C scattering
• Tetrahedral $4\alpha$ and ${}^{12}\text{C}+\alpha$ cluster structures in ${}^{16}$O
• $\alpha$ scattering cross sections on ${}^{12}$C with microscopic coupled-channel calculation

Cited by in corpus (2)

• Cluster structures and monopole transitions of ${}^{14}$C
• Neutron dominance in excited states of ${}^{26}$Mg and ${}^{10}$Be probed by proton and alpha inelastic scattering