Quantum Stark broadening data for the Civ, Nv, Ovi, Fvii and Neviii resonance doublets

ABSTRACT In this paper, we present new Stark electron impact widths of the 2s-2p resonance doublets of the Civ, Nv, Ovi, Fvii and Neviii ions, obtained using our quantum mechanical method. The present results are required to develop future spectral analysis using non-local thermodynamic equilibrium...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2011-11, Vol.417 (4), p.2624-2630
Main Authors: Elabidi, H, Sahal-Bréchot, S, Dimitrijevic, M. S, Ben Nessib, N
Format: Article
Language:English
Subjects:
Data analysis
Electrons
Quantum physics
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Summary:ABSTRACT In this paper, we present new Stark electron impact widths of the 2s-2p resonance doublets of the Civ, Nv, Ovi, Fvii and Neviii ions, obtained using our quantum mechanical method. The present results are required to develop future spectral analysis using non-local thermodynamic equilibrium model atmospheres, which can make the determination of photospheric properties more accurate. Results are presented for a large range of electron temperatures required for plasma modelling. These are compared to the available theoretical ones. They are also used to check the previously obtained semiclassical perturbation results, and very good agreement is found. The atomic structure and collision data, used for the calculations of line broadening for the five ions studied here, are also calculated and compared to available theoretical results. The agreement found between the two calculations ensures that our line-broadening procedure uses the adequate structure and collision data. Scalings of linewidths with effective charge Z are also studied.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2011.19434.x