Speaker
Dr
Emmanuel Clement
(European Organization for Nuclear Research (CERN))
Description
The study of the shape coexistence in exotic nuclei provide important benchmarks for
modern nuclear theories. Shape-coexisting states in neutron-deficient krypton
isotopes have been studied by low-energy multi-step Coulomb excitation of radioactive
74Kr and 76Kr beams at GANIL. Thanks to a large statistic, both transitional and
diagonal matrix elements were extracted up to high spins using the GOSIA code. The
final result shows a complex coupling between prolate, oblate and vibrational
configurations. All experimental values are compared with HFB+GCM theoretical
calculations underlining the necessity to treat all quadrupole degrees of freedom to
describe these nuclei. Finally, the investigation of shape coexistence between a
highly deformed prolate configuration and a spherical state in neutron-rich nuclei
around N=60 at REX-ISOLDE will be presented. The future Coulomb excitation experiment
(IS451) of a radioactive 96Sr beam at MINIBALL will be discussed.
Primary author
Dr
Emmanuel Clement
(European Organization for Nuclear Research (CERN))
