Speaker
Description
Gamma-ray spectroscopy is a powerful tool to measure electromagnetic observables offering a glimpse into the structure of neutron-rich nuclei. The advent of $\gamma$-ray tracking arrays like AGATA has indeed opened new possibilities in this field, in particular when AGATA is coupled to setups providing a high sensitivity for weak reaction channel selection.
Since 2022, the second AGATA physics campaign at LNL is ongoing. The study of neutron-rich nuclei with fusion-fission and multi-nucleon transfer reactions has been one of the main subjects tackled. The AGATA-PRISMA setup measured $\gamma$ rays emitted by the reaction products identified in mass and atomic number in PRISMA on an event-by-event basis.
In the talk, we will present results from several experiments already performed, exploiting fusion-fission reactions with a $^{208}$Pb beam and multi-nucleon transfer reactions with a variety of beams. Neutron-rich nuclei were explored around the N=20-28, N=40, N=50 and N=126 (sub)shell closures, measuring both level energies and lifetimes, helping to understand shell structure evolution in these key regions of the Segrè chart.