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Disappearance of the N=14 shell gap in the carbon isotopic chain
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2008 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 78, no 3Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2008. Vol. 78, no 3
Keyword [en]
excited-states, drip-line, nuclei, model, c-17, b-17, mass
URN: urn:nbn:se:kth:diva-17862DOI: 10.1103/PhysRevC.78.034315ISI: 000259692300028ScopusID: 2-s2.0-53549121975OAI: diva2:335907
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Kerek, Andras
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