학술논문
Low-lying single-particle structure of 17C and the N = 14 sub-shell closure
Document Type
Working Paper
Author
Pereira-López, X.; Fernández-Domínguez, B.; Delaunay, F.; Achouri, N. L.; Orr, N. A.; Catford, W. N.; Assié, M.; Bailey, S.; Bastin, B.; Blumenfeld, Y.; Borcea, R.; Caamaño, M.; Caceres, L.; Clément, E.; Corsi, A.; Curtis, N.; Deshayes, Q.; Farget, F.; Fisichella, M.; de France, G.; Franchoo, S.; Freer, M.; Gibelin, J.; Gillibert, A.; Grinyer, G. F.; Hammache, F.; Kamalou, O.; Knapton, A.; Kokalova, T.; Lapoux, V.; Lay, J. A.; Crom, B. Le; Leblond, S.; Lois-Fuentes, J.; Marqués, F. M.; Matta, A.; Morfouace, P.; Moro, A. M.; Otsuka, T.; Pancin, J.; Perrot, L.; Piot, J.; Pollacco, E.; Ramos, D.; Rodríguez-Tajes, C.; Roger, T.; Rotaru, F.; Sénoville, M.; de Séréville, N.; Smith, R.; Sorlin, O.; Stanoiu, M.; Stefan, I.; Stodel, C.; Suzuki, D.; Suzuki, T.; Thomas, J. C.; Timofeyuk, N.; Vandebrouck, M.; Walshe, J.; Wheldon, C.
Source
Subject
Language
Abstract
The first investigation of the single-particle structure of the bound states of 17C, via the d(16C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N = 14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the {\nu}1d3/2 strength is carried by unbound states. With a dominant l = 0 valence neutron configuration and a very low separation energy, the 1/2+ excited state is a one-neutron halo candidate.
Comment: 7 pages, 5 figures, Accepted for publication in Physics Letters B
Comment: 7 pages, 5 figures, Accepted for publication in Physics Letters B