We report on the observation of a new isomeric state in 68Ni. We suggest that the newly observed state at 168(1) keV above the first 2 + state is a π(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. © 2012 American Physical Society.
Discovery of a new isomeric state in 68Ni: Evidence for a highly deformed proton intruder state
GOTTARDO, ANDREA;RECCHIA, FRANCESCO;
2012
Abstract
We report on the observation of a new isomeric state in 68Ni. We suggest that the newly observed state at 168(1) keV above the first 2 + state is a π(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. © 2012 American Physical Society.File in questo prodotto:
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