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

Atoms

Per Jönsson¹  Jörgen Ekman¹  Elmar Trrt² 

[1] Materials Science and Applied Mathematics, Malmö University, SE-205 06, Malmö, Sweden; E-Mail:;Astronomisches Institut, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany; E-Mail:

关键词: Na VII;    atomic spectroscopy;    multiconfiguration Dirac–Hartree–Fock;    beam-foil;   

DOI  :  10.3390/atoms3020195

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland