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Atoms 2018, 6(2), 16; https://doi.org/10.3390/atoms6020016

Doppler Broadening of Spectral Line Shapes in Relativistic Plasmas

1
Laboratoire de Recherche de Physique des Plasmas et Surfaces (LRPPS), UKMO Ouargla 30000, Algerie
2
Département de Physique, Faculté de Mathématiques et Sciences de la matière, Université Kasdi-Merbah, Ouargla 30000, Algerie
3
Lycée professionnel les Alpilles, Rue des Lauriers, 13140 Miramas, France
4
Département des Sciences et Technologies, Faculté des Sciences et Technologies, Université de Ghardaia, Ghardaia 47000, Algerie
*
Author to whom correspondence should be addressed.
Received: 5 January 2018 / Revised: 27 March 2018 / Accepted: 27 March 2018 / Published: 4 April 2018
(This article belongs to the Special Issue Spectral Line Shapes in Astrophysics and Related Topics)
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Abstract

In this work, we report some relativistic effects on the spectral line broadening. In particular, we give a new Doppler broadening in extra hot plasmas that takes into account the possible high velocity of the emitters. This suggests the use of an appropriate distribution of the velocities for the emitters. Indeed, the Juttner-Maxwell distribution of the velocities is more adequate for relativistic velocities of the emitters when the latter are in plasma with an extra high temperature. We find an asymmetry in the Doppler line shapes unlike the case of the traditional Doppler effect. View Full-Text
Keywords: plasmas; Maxwell; Juttner-Maxwell; relativistic; Doppler effect; asymmetry plasmas; Maxwell; Juttner-Maxwell; relativistic; Doppler effect; asymmetry
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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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Meftah, M.T.; Gossa, H.; Touati, K.A.; Chenini, K.; Naam, A. Doppler Broadening of Spectral Line Shapes in Relativistic Plasmas. Atoms 2018, 6, 16.

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