Core Effects on Transition Energies for 3dk Configurations in Tungsten Ions

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Core Effects on Transition Energies for 3dk Configurations in Tungsten Ions

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Publication Article, peer reviewed scientific
Title Core Effects on Transition Energies for 3dk Configurations in Tungsten Ions
Author Fischer, Charlotte Froese ; Gaigalas, Gediminas ; Jönsson, Per
Date 2017
English abstract
All energy levels of the 3k = 1,2,..., 8, 9, configurations for tungsten ions, computed using the GRASP2K fully relativistic code based on the variational multiconfiguration Dirac-Hartree-Fock method, are reported. Included in the calculations are valence correlation where all orbitals are considered to be valence orbitals, as well as core-valence and core-core effects from the subshells. Results are compared with other recent theory and with levels obtained from the wavelengths of lines observed in the experimental spectra. It is shown that the core correlation effects considerably reduce the disagreement with levels linked directly to observed wavelengths, but may differ significantly from the NIST levels, where an unknown shift of the levels could not be determined from experimental wavelengths. For low values of k, levels were in good agreement with relativistic many-body perturbation levels, but for, the present results were in better agreement with observation.
DOI https://doi.org/10.3390/atoms5010007 (link to publisher's fulltext.)
Link https://doi.org/10.3390/atoms5010007 .Icon
Publisher MDPI
Host/Issue Atoms;1
Volume 5
ISSN 2218-2004
Language eng (iso)
Subject core correlation effects
energy levels
multiconfiguration Dirac-Hartree-Fock
tungsten ions
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/23491 Permalink to this page
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