학술논문
Discovery of a new isomeric state in $^{68}$Ni: Evidence for a highly-deformed proton intruder state
Document Type
Working Paper
Author
Dijon, A.; Clément, E.; De France, G.; De Angelis, G.; Duchêne, G.; Dudouet, J.; Franchoo, S.; Gadea, A.; Gottardo, A.; Hüyük, T.; Jacquot, B.; Kusoglu, A.; Lebhertz, D.; Lehaut, G.; Martini, M.; Napoli, D. R.; Nowacki, F.; Péru, S.; Poves, A.; Recchia, F.; Redon, N.; Sahin, E.; Schmitt, C.; Sferrazza, M.; Sieja, K.; Stezowski, O.; Valiente-Dobon, J. J.; Vancraeyenest, A.; Zheng, Y.
Source
Physical Review C 85 (2012) 031301
Subject
Language
Abstract
We report on the observation of a new isomeric state in $^{68}$Ni. 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.
Comment: 5 pages, 3 figures, accepted for publication in Physical Review C
Comment: 5 pages, 3 figures, accepted for publication in Physical Review C