Abstract
The structure of nuclei was investigated by means of the in-beam -ray spectroscopy technique using fragmentation reactions of radioactive beams. Based on particle- and particle- coincidence data, level schemes are constructed for the neutron-rich nuclei. The systematics of the first excited states in the carbon isotopes is extended for the first time to showing that in contrast to the case of the oxygen isotopes, the 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.
- Received 5 June 2008
DOI:https://doi.org/10.1103/PhysRevC.78.034315
©2008 American Physical Society