Speaker
Description
Experimental data collected in the last two decades give a clear indication that the low-energy alpha-nucleus optical potential ($\alpha$-OMP) is a crucial and not sufficiently known nuclear physics parameter in the modeling of the $\gamma$-process of heavy element nucleosynthesis. A new $\alpha$-OMP called Atomki-V2 has been developed for low energy nuclear astrophysics purposes [1]. This potential provides a reproduction of most of the available experimental reaction cross sections better than the other available global $\alpha$-OMPs. In this presentation, after giving a brief description of the experiments, the performance of this potential will be examined further in the case of two recent ($\alpha$,n) cross section measurements on $^{144}$Sm [2] and on several Te isotopes [3].
[1] P. Mohr et al. At. Data Nucl. Data Tables 142, 101453 (2021)
[2] Gy. Gyürky et al., Phys. Rev. C 107, 025803 (2023)
[3] Zs. Mátyus et al., Phys. Rev. C submitted
