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20 papers · 2 filters
Coulomb crystallization of xenon highly charged ions in a laser-cooled Ca+ matrix
Leonid Prokhorov, Aaron A. Smith, Mingyao Xu +17
We report on the sympathetic cooling and Coulomb crystallization of xenon highly charged ions (HCIs) with laser-cooled Ca ions. The HCIs are produced in a compact electron beam…
Two-loop electron self-energy in bound-electron factor: diagrams in momentum-coordinate representation
V. A. Yerokhin, B. Sikora, Z. Harman +1
The two-loop electron self-energy correction is one of the most problematic QED effects and, for a long time, was the dominant source of uncertainty in the theoretical prediction o…
Enhanced One-Color-Two-Photon Resonant Ionization in Highly Charged Ions by Fine-Structure Effects
Moto Togawa, Chunhai Lyu, Chintan Shah +25
Ultraintense pulses from X-ray free-electron lasers can drive, within femtoseconds, multiple processes in the inner shells of atoms and molecules in all phases of matter. The ensui…
Model-independent determination of nuclear charge radii from Li-like ions
V. A. Yerokhin, B. Ohayon
We demonstrate that recent advances in QED theory of Li-like ions [V. A. Yerokhin et al., Phys. Rev. A 112, 042801 (2025)] enable determinations of absolute nuclear charge radii fo…
QED vacuum polarization in the Coulomb field of a nucleus: a method of high-order calculation
Sergey Volkov
A calculation of the QED vacuum polarization potential in the Coulomb field of a pointlike nucleus was presented in an earlier publication by the author and his collaborators. Corr…
Fermion selective tests of new physics with the bound electron g-factor
Matteo Moretti, Christoph H. Keitel, Zoltán Harman
The use of high-precision measurements of the factor of single-electron ions is considered as a detailed probe for physics beyond the Standard Model. The contribution of the ex…