Ground-state properties and phase/shape transitions in the IBA
Wright Nuclear Structure Laboratory, Yale University, 06520, New Haven, CT, USA
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Accepted: 18 February 2005
Published online: 3 May 2005
Detailed fits to energies and electromagnetic transition rates for isotopic chains in the rare-earth region were performed using a simple IBA-1 Hamiltonian. The resulting parameters were then used to calculate two-neutron separation energies, isomer and isotope shifts. Comparison of the isotope shift behavior with other observables in this mass region suggests that the isotope shift could provide an indication for a first-order phase transition.
PACS: 21.10.Re Collective levels – / 21.60.Fw Models based on group theory – / 27.70.+q 150 ⩽ A ⩽ 189 –
© Società Italiana di Fisica and Springer-Verlag, 2005