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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), ARTN 0.


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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
Yamamoto, A
Date : 1 September 2008
DOI : 10.1103/PhysRevC.78.034315
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Nuclear, Physics, EXCITED-STATES, DRIP-LINE, NUCLEI, MODEL, C-17, B-17, MASS
Related URLs :
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:06
Last Modified : 31 Oct 2017 13:56

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