High-spin study of odd-A ₄₉In isotopes beyond the neutron mid-shell

The In-115,In-117,In-119,In-121 nuclei have been produced as fission fragments in three reactions induced by heavy ions: C-12 + U-238 at 90 MeV bombarding energy, O-18 + Pb-208 reaction at 85 MeV, and P-31 + Yb-176 at 152 MeV. Their level schemes have been built from gamma-rays detected using the EUROBALL III and IV arrays. High-spin states of In-117,In-119,In-121 nuclei have been identified for the first time. Moreover, isomeric states lying around 2.5 MeV have been established in In-119,In-121 from the delayed coincidences between the fission fragment detector SAPhIR and the gamma array. Most of the observed states can be described by coupling a proton g(9/2) hole to a Sn core, while the intruder band based on an orbital from the pi[g(7/2)/d(5/2)] sub-shells behaves as the ground-state band of neighbouring Cd isotopes.