Abstract
The neutron-rich nuclei were studied via projectile Coulomb excitation at the REX-ISOLDE facility at CERN. Level energies of the first excited states and their absolute transition strengths to the ground state are determined and discussed in the context of the and systematics of the krypton chain. Contrary to previously published results no sudden onset of deformation is observed. This experimental result is supported by a new proton-neutron interacting boson model calculation based on the constrained Hartree-Fock-Bogoliubov approach using the microscopic Gogny-D1M energy density functional.
- Received 10 November 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.062701
© 2012 American Physical Society