Speaker
Description
Using radioactive beams provided by the RIBF facility, Riken, Tokyo, Japan, we explored
the excited states of the exotic proton-rich nucleus 55Cu. We could study such nucleus,
characterized by an isospin T=3/2, using in-beam γ-ray spectroscopy, despite it is un-
bound, lying beyond the proton dripline. The study exploited three distinct reaction
mechanisms: inelastic excitation, single proton, and single neutron knockout. Through
comparative analysis with its isobaric analogue states, the mirror nucleus 55Fe, spins and
parities have been tentatively assigned to the observed excited states, allowing the study
of isospin-non-conserving phenomena at the extreme of the nuclear landscape. We could
understand within the Shell Model the observed excitation energies and mirror energy
differences, demonstrating reasonable agreement with theoretical predictions.
