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Atoms 2015, 3(2), 195-259; doi:10.3390/atoms3020195

MCDHF Calculations and Beam-Foil EUV Spectra of Boron-Like Sodium Ions (Na VII)

1
Materials Science and Applied Mathematics, Malmö University, SE-205 06, Malmö, Sweden
2
Astronomisches Institut, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: James F. Babb
Received: 21 March 2015 / Accepted: 15 May 2015 / Published: 9 June 2015
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Abstract

Atomic data, such as wavelengths and line identifications, are necessary for many applications, especially in plasma diagnostics and for interpreting the spectra of distant astrophysical objects. The number of valence shell electrons increases the complexity of the computational problem. We have selected a five-electron ion, Na6+ (with the boron-like spectrum Na VII), for looking into the interplay of measurement and calculation. We summarize the available experimental work, perform our own extensive relativistic configuration interaction (RCI) computations based on multi-configuration Dirac–Hartree–Fock (MCDHF) wave functions, and compare the results to what is known of the level structure. We then discuss problems with databases that have begun to combine observations and computations. View Full-Text
Keywords: Na VII; atomic spectroscopy; multiconfiguration Dirac–Hartree–Fock; beam-foil Na VII; atomic spectroscopy; multiconfiguration Dirac–Hartree–Fock; beam-foil
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jönsson, P.; Ekman, J.; Träbert, E. MCDHF Calculations and Beam-Foil EUV Spectra of Boron-Like Sodium Ions (Na VII). Atoms 2015, 3, 195-259.

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