Abstract
The low-energy reactions and the exotic structures of are studied using the generalized two-center cluster () model. In the two-neutron transfer reactions, , a resonant peak with appears around 1.3 MeV above the threshold as the result of the formation of the covalent superdeformation, which has a hybrid structure of covalent and ionic configurations for the valence neutrons. The covalent superdeformation gives rise to an isomeric state with a sharp width of keV, which is smaller by about one order of magnitude than the typical width observed in molecular resonances above the Coulomb barrier. The energy-spin systematics for the two-neutron transfer reactions is investigated, and our calculation predicts a sequence of resonant structures in the range of 3–14 MeV in the center-of-mass energy with spins .
- Received 8 May 2008
DOI:https://doi.org/10.1103/PhysRevC.78.011602
©2008 American Physical Society