PT Journal AU Dijon, Aea Gadea, A Huyuk, T TI Discovery of a new isomeric state in Ni-68: Evidence for a highly deformed proton intruder state SO Physical Review C JI Phys. Rev. C PY 2012 BP 031301 EP 5pp VL 85 IS 3 DI 10.1103/PhysRevC.85.031301 LA English AB We report on the observation of a new isomeric state in Ni-68. We suggest that the newly observed state at 168(1) keV above the first 2(+) state is a pi(2p-2h) 0(+) state across the major Z = 28 shell gap. Comparison with theoretical calculations indicates a pure proton intruder configuration and the deduced low-lying structure of this key nucleus suggests a possible shape coexistence scenario involving a highly deformed state. ER