%0 Journal Article
%T Neutron occupancy of the 0d5/2 orbital and the N=16 shell closure in 24O
%A K. Tshoo
%A Y. Satou
%A C. A. Bertulani
%A H. Bhang
%A S. Choi
%A T. Nakamura
%A Y. Kondo
%A S. Deguchi
%A Y. Kawada
%A Y. Nakayama
%A K. N. Tanaka
%A N. Tanaka
%A Y. Togano
%A N. Kobayashi
%A N. Aoi
%A M. Ishihara
%A T. Motobayashi
%A H. Otsu
%A H. Sakurai
%A S. Takeuchi
%A K. Yoneda
%A F. Delaunay
%A J. Gibelin
%A F. M. Marqu¨¦s
%A N. A. Orr
%A T. Honda
%A T. Kobayashi
%A T. Sumikama
%A Y. Miyashita
%A K. Yoshinaga
%A M. Matsushita
%A S. Shimoura
%A D. Sohler
%A J. W. Hwang
%A T. Zheng
%A Z. H. Li
%A Z. X. Cao
%J Physics
%D 2014
%I arXiv
%R 10.1016/j.physletb.2014.10.033
%X One-neutron knockout from 24O leading to the first excited state in 23O has been measured for a proton target at a beam energy of 62 MeV/nucleon. The decay energy spectrum of the neutron unbound state of 23O was reconstructed from the measured four momenta of the 22O fragment and emitted neutron. A sharp peak was found at Edecay=50$\pm$3 keV, corresponding to an excited state in 23O at 2.78$\pm$0.11 MeV, as observed in previous measurements. The longitudinal momentum distribution for this state was consistent with d -wave neutron knockout, providing support for a J{\pi} assignment of 5/2+. The associated spectroscopic factor was deduced to be C2S(0d5/2)=4.1$\pm$0.4 by comparing the measured cross section (View the MathML source) with a distorted wave impulse approximation calculation. Such a large occupancy for the neutron 0d5/2 orbital is in line with the N=16 shell closure in 24O.
%U http://arxiv.org/abs/1410.7162v1