Quadrupole collectivity of 28Ne and the boundary of the island of inversion

• DOI: 10.1016/j.physletb.2005.06.032
• Publication Date: 2005-06-21T17:38:07Z
• Authors: H. Iwasaki; T. Motobayashi; H. Sakurai; K. Yoneda; T. Gomi; N. Aoi; N. Fukuda; Zs. Fülöp; U. Futakami; Z. Gacsi; Y. Higurashi; N. Imai; N. Iwasa; T. Kubo; M. Kunibu; M. Kurokawa; Z. Liu; T. Minemura; A. Saito; M. Serata; S. Shimoura; S. Takeuchi; Y.X. Watanabe; K. Yamada; Y. Yanagisawa; M. Ishihara
• Keywords: Nuclear and High Energy Physics; 0103 physical sciences; 01 natural sciences; 7. Clean energy

The 0g.s.+→21+ excitation of the neutron-rich nucleus 28Ne has been investigated via heavy-ion inelastic scattering in reversed kinematics. B(E2;0g.s.+→21+) value was determined to be 132(23)e2fm4, which is smaller than expected from low energy first 21+ state. A comparison with theoretical predictions suggests that suppressed collectivity characteristic nuclei lying on boundary 'island inversion'.