321 citations · 6.8k across the 166 of their papers we have counts for
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Helium fine structure theory for determination of α
Krzysztof Pachucki, Vladimir A. Yerokhin
We present recent progress in the calculation of the helium fine-structure splitting of the 2^3P_J states, based on the quantum electrodynamic theory. Apart from the complete evalu…
Fine structure of helium and light helium-like ions
Krzysztof Pachucki, Vladimir A. Yerokhin
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 ar…
Nuclear size correction to the Lamb shift of one-electron atoms
Vladimir A. Yerokhin
The nuclear size effect on the one-loop self energy and vacuum polarization is evaluated for the 1s, 2s, 3s, 2p_{1/2}, and 2p_{3/2} states of hydrogen-like ions. The calculation is…
Electron-atom bremsstrahlung: double differential cross section and polarization correlations
Vladimir A. Yerokhin, Andrey Surzhykov
The leading-order electron-atom bremsstrahlung is investigated within the rigorous relativistic approach based on the partial-wave representation of the Dirac wave functions in the…
The off-resonant dielectronic recombination in a collision of an electron with a heavy hydrogen-like ion
Vladimir A. Yerokhin, Andrey Surzhykov
The recombination of an electron with an (initially) hydrogen-like ion is investigated. The effect of the electron-electron interaction is treated rigorously to the first order in…
Fine structure of helium-like ions and determination of the fine structure constant
Krzysztof Pachucki, Vladimir A. Yerokhin
We report a calculation of the fine structure splitting in light helium-like atoms, which accounts for all quantum electrodynamical effects up to order α^5 Ry. For the helium atom,…