%0 Journal Article
%T The N = 16 spherical shell closure in 24O
%A K. Tshoo
%A Y. Satou
%A H. Bhang
%A S. Choi
%A T. Nakamura
%A Y. Kondo
%A S. Deguchi
%A Y. Kawada
%A N. Kobayashi
%A Y. Nakayama
%A K. N. Tanaka
%A N. Tanaka
%A N. Aoi
%A M. Ishihara
%A T. Motobayashi
%A H. Otsu
%A H. Sakurai
%A S. Takeuchi
%A Y. Togano
%A K. Yoneda
%A Z. H. Li
%A F. Delaunay
%A J. Gibelin
%A F. M. Marqu¨¦s
%A N. A. Orr
%A T. Honda
%A M. Matsushita
%A T. Kobayashi
%A Y. Miyashita
%A T. Sumikama
%A K. Yoshinaga
%A S. Shimoura
%A D. Sohler
%A T. Zheng
%A Z. X. Cao
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevLett.109.022501
%X The unbound excited states of the neutron drip-line isotope 24O have been investigated via the 24O(p,p')23O+n reaction in inverse kinematics at a beam energy of 62 MeV/nucleon. The decay energy spectrum of 24O* was reconstructed from the momenta of 23O and the neutron. The spin-parity of the first excited state, observed at Ex = 4.65 +/- 0.14 MeV, was determined to be Jpi = 2+ from the angular distribution of the cross section. Higher lying states were also observed. The quadrupole transition parameter beta2 of the 2+ state was deduced, for the first time, to be 0.15 +/- 0.04. The relatively high excitation energy and small beta2 value are indicative of the N = 16 shell closure in 24O.
%U http://arxiv.org/abs/1205.5657v1