Abstract
We present visible spectra of Ag-like () and Cd-like () ions of Ho (atomic number ), Er (68), and Tm (69) observed with a compact electron beam ion trap. For Ag-like ions, prominent emission corresponding to the M1 transitions between the ground state fine-structure splitting is identified. For Cd-like ions, several M1 transitions in the ground state configuration are identified. The transition wavelength and the transition probability are calculated with the relativistic many-body perturbation theory and the relativistic CI + all-order approach. Comparisons between the experiments and the calculations show good agreement.
- Received 5 November 2017
DOI:https://doi.org/10.1103/PhysRevA.96.062506
©2017 American Physical Society