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arXiv · 1011.1370

Fine structure of helium and light helium-like ions

Krzysztof Pachucki·Vladimir A. Yerokhin
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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 αwith an accuracy of 31 parts per billion.

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Krzysztof Pachucki, Vladimir A. Yerokhin. 2010-12-14. Fine structure of helium and light helium-like ions. https://doi.org/10.1139/p10-050

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