A5044129880- Atomic and Molecular Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear physics research studies
- Advanced Chemical Physics Studies
- Advanced Frequency and Time Standards
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Laser-Matter Interactions and Applications
- Quantum chaos and dynamical systems
Saint Petersburg State Electrotechnical University
2017-2023
St Petersburg University
2017-2023
Kurchatov Institute
2017-2018
Institute for Theoretical and Experimental Physics
2017-2018
We have measured the ground-state $g$ factor of boronlike argon ${^{40}\mathrm{Ar}}^{13+}$ with a fractional uncertainty $1.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}$ single ion in newly developed Alphatrap double Penning-trap setup. The value $g=0.663\text{ }648\text{ }455\text{ }32(93)$ obtained here is agreement our theoretical prediction 0.663 648 12(58). latter accounting for quantum electrodynamics, electron correlation, and nuclear effects within state-of-the-art...
Relativistic calculations of the second- and third-order contributions in magnetic field to Zeeman splitting boronlike ions are presented for wide range nuclear charge numbers $Z=6$--$92$. The interelectronic-interaction correction first order $1/Z$ is evaluated all orders $\alpha Z$. higher-order corrections taken into account approximately by means effective screening potentials. obtained results important interpretation experimental data on ions, particular, ARTEMIS experiment presently...
Theoretical g ‐factor calculations for the first excited 2 P 3/2 state of boronlike ions in range Z =10–20 are presented and compared with previously published values. The first‐order interelectronic‐interaction contribution is evaluated within rigorous quantum electrodynamics (QED) approach effective screening potential. second‐order considered Breit approximation. QED nuclear recoil corrections also taken into account.
Theoretical calculations of the interelectronic-interaction and QED corrections to $g$ factor ground state boronlike ions are presented. The first-order self-energy evaluated within rigorous approach in effective screening potential. second-order interelectronic interaction is considered Breit approximation. nuclear recoil effect also taken into account. results for ground-state range $Z$=10--20 presented compared previous calculations.
The current status of the theoretical investigation bound-electron g factor in lithium-like and boron-like highly charged ions is reported. Some tension between several values measurements discussed. Then, prospects for future investigations are briefly reviewed.
Dirac equation for an electron bound by a nucleus in the presence of external axially symmetric field can be solved numerically using dual-kinetic-balance conditions imposed on finite basis set (A-DKB method [Rozenbaum et al, Phys. Rev. A 89, 012514 (2014)]). We present application this to describe helium-like ions exposed homogeneous magnetic field. The second-order Zeeman shift and nuclear shielding constant are evaluated ground state, including leading contribution interelectronic...
Theoretical \emph{g}-factor calculations for the first excited \exst state of boronlike ions in range $Z$=10--20 are presented and compared to previously published values. The first-order interelectronic-interaction contribution is evaluated within rigorous QED approach effective screening potential. second-order considered Breit approximation. nuclear recoil corrections also taken into account.