PlumX Metrics
Embed PlumX Metrics

On the origin of the anomalous behaviour of 2+ excitation energies in the neutron-rich Cd isotopes

Physics Letters B, ISSN: 0370-2693, Vol: 668, Issue: 5, Page: 410-413
2008
  • 40
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    40
    • Citation Indexes
      40
  • Captures
    10

Article Description

Recent experimental results obtained using β decay and isomer spectroscopy indicate an unusual behaviour of the energies of the first excited 2+ states in neutron-rich Cd isotopes approaching the N=82 shell closure. To explain the unexpected trend, changes of the nuclear structure far-off stability have been suggested, namely a quenching of the N=82 shell gap already in 130 Cd, only two proton holes away from doubly magic 132 Sn. We study the behaviour of the 2+ energies in the Cd isotopes from N=50 to N=82, i.e. across the entire span of a major neutron shell using modern beyond mean field techniques and the Gogny force. We demonstrate that the observed low 2+ excitation energy in 128 Cd close to the N=82 shell closure is a consequence of the doubly magic character of this nucleus for oblate deformation favoring thereby prolate configurations rather than spherical ones.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know