Study of the neutron deficient 182-190Pb isotopes by simultaneous atomic- and nuclear-spectroscopy

  • M. Seliverstov
  • , A. Andreyev
  • , N. Barré
  • , H. De Witte
  • , D. Fedorov
  • , V. Fedoseyev
  • , S. Franchoo
  • , J. Genevey
  • , G. Huber
  • , M. Huyse
  • , U. Köster
  • , P. Kunz
  • , S. Lesher
  • , B. Marsh
  • , B. Roussière
  • , J. Sauvage
  • , P. Van Duppen
  • , Yu Volkov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Mean-square charge radii and magnetic moments have been measured for the neutron deficient lead isotopes, 182-190Pb. The measurement was performed at the ISOLDE online mass separator, using the in-source resonance ionization spectroscopy technique. The wavelength of the first excitation step for the resonance ionization laser ion source (RILIS) was scanned over the resonance(s) whilst the α- and γ-ray spectra from the decay of the Pb isotopes were recorded as a function of the wavelength. The isotope shift and, in the case of odd-A isotopes, the hyperfine splitting were deduced. The rms-charge radii of the very neutron deficient Pb isotopes follow the smooth trend of the heavier isotopes. This finding indicates a spherical shape for the lead ground states at the neutron mid-shell (N=104), where the excitation energy of the oblate 0+ state in the even isotopes reaches its minimum. © 2007 Springer Science+Business Media, Inc.
Original languageEnglish
Title of host publicationUnknown book
Volume171
EditionIssue 1-3
DOIs
StatePublished - 2006

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