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

## TL;DR

This paper presents the first microscopic coupled-channel calculation of alpha inelastic scattering cross sections on $^{16}$O, using microscopically derived potentials and detailed nuclear structure models, successfully reproducing experimental data.

## Contribution

It introduces a novel microscopic coupled-channel approach for alpha inelastic scattering on $^{16}$O, integrating detailed nuclear structure and interaction models.

## Key findings

- Reproduces observed elastic and inelastic cross sections at multiple energies.
- Demonstrates the significance of coupled-channel effects on cross sections.
- Provides insights into nuclear structure and reaction mechanisms.

## 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.