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Atoms 2018, 6(2), 20; https://doi.org/10.3390/atoms6020020

Quantum and Semiclassical Stark Widths for Ar VII Spectral Lines

1
Laboratoire Dynamique Moléculaire et Matériaux Photoniques, GRePAA, École Nationale Supérieure d’ingénieurs de Tunis, University of Tunis, Tunis 1008, Tunisia
2
LDMMP, GRePAA, Faculté des Sciences de Bizerte, University of Carthage, Bizerte 7021, Tunisia
3
Sorbonne Université, Observatoire de Paris, Université PSL, CNRS, LERMA, F-92190 Meudon, France
4
Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia
Current address: Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia.
*
Author to whom correspondence should be addressed.
Received: 15 March 2018 / Revised: 6 April 2018 / Accepted: 10 April 2018 / Published: 16 April 2018
(This article belongs to the Special Issue Spectral Line Shapes in Astrophysics and Related Topics)
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Abstract

We present in this paper the results of a theoretical study of electron impact broadening for several lines of the Ar VII ion. The results have been obtained using our quantum mechanical method and the semiclassical perturbation one. Results are presented for electron density 1018 cm−3 and for electron temperatures ranging from 2 × 10 4 to 5 × 10 5 K required for plasma modeling. Our results have been compared to other semiclassical ones obtained using different sources of atomic data. A study of the strong collisions contributions to line broadening has been performed. The atomic structure and collision data used for the calculations of line broadening are also calculated by our codes and compared to available theoretical results. The agreement found between the two calculations ensures that our line broadening procedure uses adequate structure and collision data. View Full-Text
Keywords: Stark broadening; Ar VII line profiles; stars; white dwarfs; atomic data; scattering Stark broadening; Ar VII line profiles; stars; white dwarfs; atomic data; scattering
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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

Aloui, R.; Elabidi, H.; Sahal-Bréchot, S.; Dimitrijević, M.S. Quantum and Semiclassical Stark Widths for Ar VII Spectral Lines. Atoms 2018, 6, 20.

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