Testing relativistic atomic structure and bound-state quantum electrodynamics with Co-like ions
Multiply charged ions with a single hole in closed shells are being extensively used to study relativistic and quantum electrodynamic (QED) effects due to the suppression of electron correlations in such systems. Here, we report measurements of the fine-structure splitting in the ground configuration $3{d}^{9}$ of Co-like ions of Yb, Re, Os, and Ir performed with an electron beam ion trap. Extensive relativistic many-body perturbation theory and multiconfiguration Dirac-Hartree-Fock calculations were executed with account of high-order QED contributions. It is found that those advanced calculations very well agree with the present accurate measurements of the $3{d}^{9} {}^{2}{D}_{3/2}{\ensuremath{-}}^{2}{D}_{5/2}$ splittings. Comparisons with other theoretical works and experiments are presented as well.
Authors
- S. A. Blundell (ORCID: https://orcid.org/0000-0002-5260-002X)
- R. Silwal (ORCID: https://orcid.org/0000-0003-4175-4135)
- Yuri V. Ralchenko (ORCID: https://orcid.org/0000-0003-0083-9554)
- Endre Takács (ORCID: https://orcid.org/0000-0002-2427-5362)
- Dipti Dipti (ORCID: https://orcid.org/0000-0001-6675-8509)
- Merrian Fuller
- H. Staiger (ORCID: https://orcid.org/0009-0000-6856-0037)
- Adam Hosier (ORCID: https://orcid.org/0000-0003-2836-6605)
- S. Sanders (ORCID: https://orcid.org/0000-0002-9491-6022)
Institutions
- National Institute of Standards and Technology (US)
- National Institute of Standards (EG)
- Appalachian State University (US)
- Clemson University (US)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2025-04-21
- DOI
- https://doi.org/10.1103/physreva.111.042821
- Citations
- 1
- Primary Topic
- Atomic and Molecular Physics
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- National Science Foundation
- National Institute of Standards and Technology