Calculation of hyperfine structure in Tm II
Abstract
The first measurements of the magnetic dipole hyperfine structure constants A in singly ionized thulium revealed substantial discrepancies with the corresponding calculations [Mansour et al., NIMB 40, 252 (1989)]. More recent measurements [Kebapc{\i} et al., ApJ 970, 23 (2024)] expanded very limited dataset of that work and demonstrated that two of the previously reported experimental A values were incorrect, motivating new theoretical calculations. In this work, we employ the configuration interaction method to calculate the A constants for several low-lying levels in Tm II, with the random-phase-approximation corrections also taken into account. Our results show good agreement with the new experimental data and provide reliable predictions for additional states where measurements are not yet available.
Keywords
Cite
@article{arxiv.2512.16426,
title = {Calculation of hyperfine structure in Tm II},
author = {Andrey I. Bondarev},
journal= {arXiv preprint arXiv:2512.16426},
year = {2026}
}