Gaps in the yrast level structure of the N=50 isotones 93Tc, 94Ru, and 95Rh at high angular momentum

The projectile-target system 40Ca+58Ni has been used to produce the neutron deficient N=50 isotones 93Tc, 94Ru, and 95Rh at high angular momentum. The multidetector array NORDBALL including particle selection was used. A large number of new levels were found in all three nuclei. Most of them can be interpreted as states with a neutron particle-hole excitation across the N=50 shell gap, coupled to lower valence-proton configurations. Some of the observed levels above 11 MeV probably correspond to states with two neutrons excited across the shell gap