Evidence for a Smooth Onset of Deformation in the Neutron-Rich Kr Isotopes

M. Albers et al.
Phys. Rev. Lett. 108, 062701 – Published 10 February 2012; Errata Phys. Rev. Lett. 109, 209904 (2012); Phys. Rev. Lett. 114, 189902 (2015)

Abstract

The neutron-rich nuclei Kr94,96 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(21+) and B(E2;21+01+) 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.

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  • Received 10 November 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.062701

© 2012 American Physical Society

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Vol. 108, Iss. 6 — 10 February 2012

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