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Disappearance of the N=14 shell gap in the carbon isotopic chain

Stanoiu, M, Sohler, D, Sorlin, O, Azaiez, F, Dombradi, Z, Brown, BA, Belleguic, M, Borcea, C, Bourgeois, C, Dlouhy, Z, Elekes, Z, Fulop, Z, Grevy, S, Guillemaud-Mueller, D, Ibrahim, F, Kerek, A, Krasznahorkay, A, Lewitowicz, M, Lukyanov, SM, Mandal, S, Mrazek, J, Negoita, F, Penionzhkevich, Y-E, Podolyak, Z, Roussel-Chomaz, P, Saint-Laurent, MG, Savajols, H, Sletten, G, Timar, J, Timis, C and Yamamoto, A (2008) Disappearance of the N=14 shell gap in the carbon isotopic chain PHYSICAL REVIEW C, 78 (3). ? - ?. ISSN 0556-2813

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Official URL: http://dx.doi.org/10.1103/PhysRevC.78.034315

Abstract

The structure of C-17-20(6) nuclei was investigated by means of the in-beam gamma-ray spectroscopy technique using fragmentation reactions of radioactive beams. Based on particle-gamma and particle-gamma gamma coincidence data, level schemes are constructed for the neutron-rich C17-20 nuclei. The systematics of the first excited 2(+) states in the carbon isotopes is extended for the first time to A = 20 showing that in contrast to the case of the oxygen isotopes, the N = 14 subshell closure disappears. Experimental results are compared with shell-model calculations. Agreement between them is found only if a reduced neutron-neutron effective interaction is used. Implications of this reduced interaction in some properties of weakly bound neutron-rich Carbon are discussed.

Item Type:Article
Additional Information:Copyright 2008 The American Physical Society. This is the author's copy.
Uncontrolled Keywords:Science & Technology, Physical Sciences, Physics, Nuclear, Physics, EXCITED-STATES, DRIP-LINE, NUCLEI, MODEL, C-17, B-17, MASS
Divisions:Faculty of Engineering and Physical Sciences > Physics
ID Code:711990
Deposited By:Mr Adam Field
Deposited On:22 Aug 2012 09:17
Last Modified:13 Jun 2013 02:36

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