Validation of an optical potential for incident and emitted low-energy α-particles in the A∼60 mass range

The assessment of an alpha-particle optical model potential for nucleon-induced alpha-emission within the A similar to 60 mass-number range [Avrigeanu and Avrigeanu (Eur. Phys. J. A57:54, 2021)] is completed by analysis of neutron-induced reactions on stable Ni isotopes. The same consistent set of nuclear-model input parameters as well as first uncertainty analysis of calculated cross sections related to the accuracy of independent data formerly used within parameter setting up have been concerned. Description of absorption and emission of alpha-particles by the same potential is validated, while the pickup direct reaction and Giant Quadrupole Resonance (GQR) alpha-emission beyond the statistical predictions are confirmed by recent data around the GQR energies.

Automated summary

This study analyzed the process of alpha-particle emission induced by neutron reactions on stable nickel isotopes and validated the effectiveness of using the same potential in the alpha-particle optical model for describing the absorption and emission processes. Furthermore, it confirmed the existence of pickup direct reactions and alpha-emission beyond statistical predictions around the Giant Quadrupole Resonance (GQR) energies through recent experimental data.