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Atoms 2017, 5(3), 32; doi:10.3390/atoms5030032

Stark Broadening from Impact Theory to Simulations

1
Département de Physique, Aix-Marseille Université, CNRS, PIIM UMR 7345, 13397 Marseille CEDEX 20, France
2
PRIMALAB, Faculty of Sciences, University of Batna 1, Batna 05000, Algeria
3
Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia
*
Author to whom correspondence should be addressed.
Academic Editor: Ulrich Jentschura
Received: 31 August 2017 / Accepted: 11 September 2017 / Published: 20 September 2017
(This article belongs to the Special Issue Spectral Line Shapes in Astrophysics and Related Topics)
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Abstract

Impact approximation is widely used for calculating Stark broadening in a plasma. We review its main features and different types of models that make use of it. We discuss recent developments, in particular a quantum approach used for both the emitter and the perturbers. Numerical simulations are a useful tool for gaining insight into the mechanisms at play in impact-broadening conditions. Our simple model allows the integration of the Schrödinger equation for an emitter submitted to a fluctuating electric field. We show how we can approach the impact results, and how we can investigate conditions beyond the impact approximation. The simple concepts developed in impact and simulation approaches enable the analysis of complex problems such as the effect of plasma rogue waves on hydrogen spectra. View Full-Text
Keywords: stark broadening; impact approximation; numerical simulation stark broadening; impact approximation; numerical simulation
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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

Stamm, R.; Hannachi, I.; Meireni, M.; Godbert-Mouret, L.; Koubiti, M.; Marandet, Y.; Rosato, J.; Dimitrijević, M.S.; Simić, Z. Stark Broadening from Impact Theory to Simulations. Atoms 2017, 5, 32.

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