期刊
PHYSICAL REVIEW C
卷 78, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.78.034315
关键词
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资金
- European Community [RII3-CT-2004-506065, OTKAK68801]
- NSF [PHY-0555366]
- STFC [EP/D072018/1] Funding Source: UKRI
- Science and Technology Facilities Council [EP/D072018/1] Funding Source: researchfish
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.
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