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 et al, 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), ARTN 0.

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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
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	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
Date :	1 September 2008
DOI :	10.1103/PhysRevC.78.034315
Uncontrolled Keywords :	Science & Technology, Physical Sciences, Physics, Nuclear, Physics, PHYSICS, NUCLEAR, EXCITED-STATES, DRIP-LINE, NUCLEI, MODEL, C-17, B-17, MASS
Related URLs :	Author
Additional Information :	Copyright 2008 The American Physical Society. This is the author's copy.
Depositing User :	Mr Adam Field
Date Deposited :	22 Aug 2012 08:17
Last Modified :	23 Mar 2020 11:00
URI:	http://epubs.surrey.ac.uk/id/eprint/711990

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