Abstract
The generalized two-center cluster model, which can treat static structures and dynamical reactions in excited states, is applied to the light neutron-rich system, . We discuss the change of the neutrons’ configuration around two cores from the covalent structure to the ionic one. We show that, in the unbound region above particle-decay thresholds, the ionic configurations appear as the molecular resonances of , , and . A new type of superdeformation is possible, and we find here a covalent superdeformation with a hybrid configuration of both the covalent and ionic structures. The excitation of these exotic structures through the two-neutron transfer reaction is also discussed.
- Received 17 August 2007
DOI:https://doi.org/10.1103/PhysRevLett.100.182502
©2008 American Physical Society