Collinear laser spectroscopy on neutron-rich actinium isotopes

Open Access
Authors
  • Ruohong Li
  • Andrea Teigelhöfer
  • Jiguang Li
  • Jacek Bieroń
  • András Gácsbaranyi
  • Jake Johnson
  • Per Jönsson
  • Victoria Karner
  • Mingxuan Ma
  • Martin Radulov
  • Mathias Roman
  • Monika Stachura
  • Jens Lassen
Publication date 05-2025
Journal Physical Review C
Article number 054320
Volume | Issue number 111 | 5
Number of pages 14
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Van der Waals-Zeeman Institute (WZI)
Abstract

High-resolution collinear laser spectroscopy of neutron-rich actinium has been performed at TRIUMF's isotope separator and accelerator facility ISAC. By probing the 7s2  1S0→6d7p 1P1 ionic transition, the hyperfine structures and optical isotope shifts in 

225,226,228,229Ac+ have been measured. This allows precise determinations of the changes in mean-square charge radii, magnetic dipole moments, and electric quadrupole moments of these actinium isotopes. The improved precision of charge radii and magnetic moments clears the ambiguity in the odd-even staggering from previous studies. The electric quadrupole moments of 225,226,228,229Ac are determined for the first time.
Document type Article
Language English
Published at https://doi.org/10.1103/PhysRevC.111.054320
Other links https://www.scopus.com/pages/publications/105006703429
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PhysRevC.111.054320 (Final published version)
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