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Benchmarking calculations with spectroscopic accuracy of level energies and wavelengths in W LVII–W LXII tungsten ions
Fudan University, China.
Hebei University, China.
Fudan University, China.
Université libre de Bruxelles, Belgium.
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2021 (English)In: Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN 0022-4073, E-ISSN 1879-1352, Vol. 269, article id 107650Article in journal (Refereed) Published
Abstract [en]

Atomic properties of n=3 states of the W56+ - W61+ ions are systematically investigated through two state-of-the-art methods, namely, the second-order many-body perturbation theory, and the multi-configuration Dirac–Hartree–Fock method combined with the relativistic configuration interaction approach. The contributions of valence-valence and core-valence electron correlations, the Breit interaction, the higher-order retardation correction beyond the Breit interaction through the transverse photon interaction, and the quantum electrodynamical corrections to the excitation energies are studied in detail. The excitation energies and wavelengths obtained with the two methods agree with each other within ≈0.01%. The present results achieve spectroscopic accuracy and provide a benchmark test for various applications and other theoretical calculations of W56+ - W61+ ions. They will assist spectroscopists in their assignment and direct identification of observed lines in complex spectra.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 269, article id 107650
Keywords [en]
Excitation energies, Highly charged tungsten ions, Multi-configuration Dirac–Hartree–Fock method, Second-order many-body perturbation theory, Wavelengths, Excited states, Metal ions, Molecular physics, Perturbation techniques, Quantum chemistry, Quantum theory, Tungsten, Atomic properties, Breit interaction, Energy, Highly charged tungsten ion, Second orders, State-of-the-art methods, Tungsten ions, Two-state, Benchmarking, accuracy assessment, electron, ion, spectroscopy, wavelength
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:mau:diva-42694DOI: 10.1016/j.jqsrt.2021.107650ISI: 000654343500007Scopus ID: 2-s2.0-85103756646OAI: oai:DiVA.org:mau-42694DiVA, id: diva2:1560435
Available from: 2021-06-04 Created: 2021-06-04 Last updated: 2021-06-22Bibliographically approved

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Jönsson, Per

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