Generalized relativistic small‐core pseudopotentials accounting for quantum electrodynamic effects: Construction and pilot applications

A Zaitsevskii, NS Mosyagin… - … Journal of Quantum …, 2023 - Wiley Online Library
A simple procedure to incorporate one‐loop quantum electrodynamic (QED) corrections into
the generalized (Gatchina) nonlocal shape‐consistent relativistic pseudopotential model is …

Relativistic Fock-space coupled cluster method: Theory and recent applications

E Eliav, A Borschevsky, A Zaitsevskii… - Reference Module in …, 2021 - research.rug.nl
Four-component relativistic all-order multireference electron correlation approaches are the
most accurate methods available for benchmark calculations of properties of heavy atoms …

Accurate ab initio calculations of RaF electronic structure appeal to more laser-spectroscopical measurements

A Zaitsevskii, LV Skripnikov, NS Mosyagin… - The Journal of …, 2022 - pubs.aip.org
Recently, a breakthrough has been achieved in laser-spectroscopic studies of short-lived
radioactive compounds with the first measurements of the radium monofluoride molecule …

Finite-field calculations of transition properties by the Fock space relativistic coupled cluster method: Transitions between different Fock space sectors

A Zaitsevskii, AV Oleynichenko, E Eliav - Symmetry, 2020 - mdpi.com
Reliable information on transition matrix elements of various property operators between
molecular electronic states is of crucial importance for predicting spectroscopic, electric …

Ab initio relativistic treatment of the a3Π− X1Σ+, a′ 3Σ+− X1Σ+ and A1Π− X1Σ+ systems of the CO molecule

NS Mosyagin, AV Oleynichenko, A Zaitsevskii… - Journal of Quantitative …, 2021 - Elsevier
The spin-forbidden a 3 Π− X 1 Σ+, a′ 3 Σ+− X 1 Σ+ and spin-allowed A 1 Π− X 1 Σ+
electronic transitions dipole moments of carbon monoxide have been ab initio studied in the …

Theoretical molecular spectroscopy of actinide compounds: The ThO molecule

A Zaitsevskii, AV Oleynichenko, E Eliav - Molecular Physics, 2023 - Taylor & Francis
The tiny-core generalised (Gatchina) relativistic pseudopotential (GRPP) model provides an
accurate approximation for many-electron Hamiltonians of molecules containing heavy …

Fourier-transform spectroscopy and relativistic electronic structure calculation on the c3Σ+ state of KCs

A Kruzins, V Krumins, M Tamanis, R Ferber… - Journal of Quantitative …, 2021 - Elsevier
Abstract The Ti: Saphire laser operated within 13800-11800 cm− 1 range was used to excite
the c 3 Σ+ state of KCs molecule directly from the ground X 1 Σ+ state. The laser-induced …

Ab initio study of electronic states and radiative properties of the AcF molecule

LV Skripnikov, AV Oleynichenko… - The Journal of …, 2023 - pubs.aip.org
Relativistic coupled-cluster calculations of the ionization potential, dissociation energy, and
excited electronic states under 35 000 cm− 1 are presented for the actinium monofluoride …

The a3Σ+ state of KCs revisited: hyperfine structure analysis and potential refinement

V Krumins, M Tamanis, R Ferber… - Journal of Quantitative …, 2022 - Elsevier
Laser-induced fluorescence spectra of the c 3 Σ+(vc, J c= N c)→ a 3 Σ+(va, N a= J c±1)
transitions excited from the ground X 1 Σ+ state of 39 K 133 Cs molecule were recorded with …

The branching ratio of intercombination A1Σ+∼ b3Π→ a3Σ+/X1Σ+ transitions in the RbCs molecule: Measurements and calculations

V Krumins, A Kruzins, M Tamanis, R Ferber… - Journal of Quantitative …, 2020 - Elsevier
We observed the A 1 Σ+∼ b 3 Π→ a 3 Σ+/X 1 Σ+ laser-induced fluorescence (LIF) of the
RbCs molecule excited from the ground X 1 Σ+ state by the Ti: Sapphire laser. The LIF …