Changes in mean-squared charge radii and magnetic moments of 179-184Tl measured by in-source laser spectroscpoy

Research output: Contribution to journalArticle


  • A.E. Barzakh
  • Andrei N. Andreyev
  • Thomas Elias Cocolios
  • Ruben P De Groote
  • D.V. Fedorov
  • Valentin N. Fedosseev
  • Rafael Ferrer
  • D.A. Fink
  • Mark Huyse
  • Ulli Koester
  • Joseph Lane
  • Valentina Liberati
  • Kara M Lynch
  • Bruce A Marsh
  • P.L. Molkanov
  • T. J. Procter
  • Elisa Rapisarda
  • Sebastian Rothe
  • K. Sandhu
  • Maxim D. Seliverstov
  • A.M. Sjödin
  • Celine Van Beveren
  • Piet Van Duppen
  • Martin Venhart
  • M. Veselsky

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • PNPI - Petersburg Nuclear Physics Institute
  • CERN - Conseil Européen pour la Recherche Nucléaire
  • Ruprecht-Karls Heidelberg Universität
  • University of Manchester
  • JGU - Johannes Gutenberg University Mainz - Institut für Physik
  • UWS - University of the West of Scotland
  • University of York
  • ASRC - Advanced Science Research Center - JAEA
  • SAS - Slovak Academy of Sciences
  • ILL - Institut Laue Langevin

Documents & links


Hyperfine structure and isotope shifts have been measured for the ground and isomeric states in the neutron deficient isotopes 179–184Tl using the 276.9-nm transition. The experiment has been performed at the CERN Isotope Separator On-Line facility using the in-source resonance-ionization laser spectroscopy technique. Spins for the ground states in 179,181,183Tl have been determined as I = 1/2. Magnetic moments and changes in the nuclear mean-square charge radii have been deduced. By applying the additivity relation for magnetic moments of the odd-odd Tl nuclei the leading configuration assignments were confirmed. A deviation of magnetic moments for isomeric states in 182,184Tl from the trend of the heavier Tl nuclei is observed. The charge radii of the ground states of the isotopes 179–184Tl follow the trend for isotonic (spherical) lead nuclei. The noticeable difference in charge radii for ground and isomeric states of 183,184Tl has been observed, suggesting a larger deformation for the intruder-based 9/2− and 10− states compared to the ground states. An unexpected growth of the isomer shift for 183Tl has been found.


Original languageEnglish
Article number014324
Pages (from-to)1-12
Number of pages12
JournalPhysical Review C
Publication statusPublished - 23 Jan 2017


  • laser spectroscopy, ISOLDE, CERN, Thallium

ID: 2159533