Fine structure of helium and light helium-like ions
Atomic Physics
2015-05-20 v2
Abstract
Calculational results are presented for the fine-structure splitting of the 2^3P state of helium and helium-like ions with the nuclear charge Z up to 10. Theoretical predictions are in agreement with the latest experimental results for the helium fine-structure intervals as well as with the most of the experimental data available for light helium-like ions. Comparing the theoretical value of the 2^3P_0-2^3P_1 interval in helium with the experimental result [T. Zelevinsky et al. Phys. Rev. Lett. 95, 203001 (2005)], we determine the value of the fine-structure constant \alpha with an accuracy of 31 parts per billion.
Cite
@article{arxiv.1011.1370,
title = {Fine structure of helium and light helium-like ions},
author = {Krzysztof Pachucki and Vladimir A. Yerokhin},
journal= {arXiv preprint arXiv:1011.1370},
year = {2015}
}
Comments
proceedings of the PSAS2010 conference. One misprinted digit in Table I is corrected