Résumé du preprint DAPNIA-05-190

DAPNIA-05-190
Shell gap reduction in neutron rich N = 17 nuclei
A. Obertelli, A. Gillibert, N. Alamanos, M. Alvarez,F. Auger, R. Dayras, G. de France, A. Drouart, B. Jurado, N. Keeley, V. Lapoux, W. Mittig, X. Mougeot, L. Nalpas, A. Pakou, N. Patronis, E. Pollacco, F. Rejmund, M. Rejmund, P. Roussel-Chomaz, H. Savajols, F. Skaza, C. Theisen
The spectroscopy of 27Ne has been investigated through the one neutron transfer reaction 26Ne(d,p)27Ne in inverse kinematics. The results strongly support the existence of a low-lying negative parity state in 27Ne which is a signature of a reduced sd-fp shell gapin the N=16 neutron rich region, at variance with stable nuclei.

 

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