Evidence for a Smooth Onset of Deformation in the Neutron-Rich Kr Isotopes
Publication Type
Journal Article
Year of Publication
2012
Name of Publication
Physical Review Letters
Volume
108
Issue
6
Date Published
Feb
Short Title
Evidence for a Smooth Onset of Deformation in the Neutron-Rich Kr Isotopes
Accession Number
WOS:000300102900008
ISBN Number
0031-9007
Abstract
The neutron-rich nuclei Kr-94,Kr-96 were studied via projectile Coulomb excitation at the REX-ISOLDE facility at CERN. Level energies of the first excited 2(+) states and their absolute E2 transition strengths to the ground state are determined and discussed in the context of the E(2(1)(+)) and B(E2;2(1)(+)-> 0(1)(+)) 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.