Feb 12 – 14, 2007
CERN
Europe/Zurich timezone

Shape coexistence in exotic nuclei studied by low energy coulomb excitation

Feb 14, 2007, 3:20 PM
20m
Council Chamber, 503/1-001 (CERN)

Council Chamber, 503/1-001

CERN

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))

Presentation materials