PHYSICAL REVIEW C, vol.100, no.3, 2019 (SCI-Expanded)
Background: Double charge exchange (DCE) nuclear reactions have recently attracted much interest as tools to provide experimentally driven information about nuclear matrix elements of interest in the context of neutrinoless double-beta decay. In this framework, a good description of the reaction mechanism and a complete knowledge of the initial and final-state interactions are mandatory. Presently, not enough is known about the details of the optical potentials and nuclear response to isospin operators for many of the projectile-target systems proposed for future DCE studies. Among these, the Ne-20+Ge-76 DCE reaction is particularly relevant due to its connection with Ge-76 double-beta decay.