Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2009-06-22
Phys.Rev.Lett.103:032501,2009
Physics
Nuclear Physics
Nuclear Experiment
Accepted for publication in Phys. Rev. Lett. 11 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.103.032501
We report on the first spectroscopic study of the N=22 nucleus 32Ne at the newly completed RIKEN Radioactive Ion Beam Factory. A single gamma-ray line with an energy of 722(9) keV was observed in both inelastic scattering of a 226 MeV/u 32Ne beam on a Carbon target and proton removal from 33Na at 245 MeV/u. This transition is assigned to the de-excitation of the first J^pi = 2+ state in 32Ne to the 0+ ground state. Interpreted through comparison with state-of-the-art shell model calculations, the low excitation energy demonstrates that the Island of Inversion extends to at least N=22 for the Ne isotopes.
Aoi N.
Baba Hideshi
Deguchi Shigeki
Doornenbal P.
Fukuda Naoya
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