QED tests with highly charged ions

P Indelicato - Journal of Physics B: Atomic, Molecular and Optical …, 2019 - iopscience.iop.org
The current status of bound state quantum electrodynamics calculations of transition
energies for few-electron ions is reviewed. Evaluation of one and two body QED correction …

CHIANTI—an atomic database for emission lines. XVI. Version 10, further extensions

G Del Zanna, KP Dere, PR Young… - The Astrophysical …, 2021 - iopscience.iop.org
We present version 10 of the CHIANTI package. In this release, we provide updated atomic
models for several helium-like ions and for all the ions of the beryllium, carbon, and …

QED calculations of energy levels of heliumlike ions with

VA Yerokhin, V Patkóš, K Pachucki - Physical Review A, 2022 - APS
A calculation of two-electron QED effects to all orders in the nuclear binding strength
parameter Z α is presented for the ground and n= 2 excited states of heliumlike ions. After …

QED corrections to the correlated relativistic energy: One-photon processes

Á Margócsy, E Mátyus - The Journal of Chemical Physics, 2024 - pubs.aip.org
This work is a collection of initial calculations and formal considerations within the Salpeter–
Sucher exact equal-time relativistic quantum electrodynamics framework. The calculations …

Factor of Lithiumlike Silicon: New Challenge to Bound-State QED

DA Glazov, F Köhler-Langes, AV Volotka, K Blaum… - Physical Review Letters, 2019 - APS
The recently established agreement between experiment and theory for the g factors of
lithiumlike silicon and calcium ions manifests the most stringent test of the many-electron …

Theoretical energy levels of 1sns and 1snp states of helium-like ions

VA Yerokhin, A Surzhykov - … of Physical and Chemical Reference Data, 2019 - pubs.aip.org
Energy levels of the 1sns and 1snp states of ions along the helium isoelectronic sequence
from carbon to uranium are calculated, with n= 3–7. The computation is performed within the …

QED calculation of electron-electron correlation effects in heliumlike ions

YS Kozhedub, AV Malyshev, DA Glazov, VM Shabaev… - Physical Review A, 2019 - APS
A fully relativistic approach to evaluating the correlation effects in highly charged ions is
presented. The interelectronic-interaction contributions of first and second orders in 1/Z are …

Complex-scaled relativistic configuration-interaction study of the resonances in heliumlike ions: From boron to argon

VA Zaytsev, IA Maltsev, II Tupitsyn, VM Shabaev - Physical Review A, 2019 - APS
Energies and Auger widths of the LL resonances in He-like ions from boron to argon are
evaluated by means of a complex-scaled configuration-interaction approach within the …

Ab initio Calculations of Energy Levels in Be-Like Xenon: Strong Interference between Electron-Correlation and QED Effects

AV Malyshev, DA Glazov, YS Kozhedub… - Physical Review Letters, 2021 - APS
The strong mixing of close levels with two valence electrons in Be-like xenon greatly
complicates ab initio QED calculations beyond the first-order approximation. Because of a …

Ab initio calculations of the transition in He-, Li-, and Be-like uranium

AV Malyshev, YS Kozhedub, VM Shabaev - Physical Review A, 2023 - APS
The bound-state QED approach is applied to calculations of the 2 p 3/2→ 2 s transition
energies in He-, Li-, and Be-like uranium. For U 90+ and U 89+, standard perturbation theory …