Hyperfine splitting in $^{6,7}$Li$^+$
Atomic Physics
2023-10-31 v2
Abstract
We present a detailed derivation of the QED effects of order to the hyperfine structure (hfs) of the states of helium-like ions and perform numerical calculations for Li and Li. By comparing the theoretical point-nucleus results with the measured hfs of Li, we determine the nuclear-structure contribution parameterized in terms of the effective Zemach radius. Using the experimental hfs results for Li, we obtain accurate predictions for the hfs of Li and Li, for which no experimental data is available so far. By examining the normalized differences of the hfs of Li and Li and of the corresponding isotope-shift differences, we test the consistency of the hfs measurements in Li and Li.
Cite
@article{arxiv.2309.00436,
title = {Hyperfine splitting in $^{6,7}$Li$^+$},
author = {Krzysztof Pachucki and Vojtěch Patkóš and Vladimir A. Yerokhin},
journal= {arXiv preprint arXiv:2309.00436},
year = {2023}
}