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Weakly relativistic quantum kinetic theory for electrostatic wave modes in magnetized plasmas
Department of Physics, GC University Lahore, 54000 Lahore, Pakistan.
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
2014 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 21, no 3, 032104- p.Article in journal (Refereed) Published
Abstract [en]

We have derived the electrostatic dispersion relation in a magnetized plasma using a recently developed quantum kinetic model based on the Dirac equation. The model contains weakly relativistic spin effects such as Thomas precession, the polarization currents associated with the spin and the spin-orbit coupling. It turns out that for strictly electrostatic perturbations the non-relativistic spin effects vanish, and the modification of the classical dispersion relation is solely associated with the relativistic terms. Several new wave modes appear due the electron spin effects, and an example for astrophysical plasmas are given. (C) 2014 AIP Publishing LLC.

Place, publisher, year, edition, pages
AIP Publishing LLC , 2014. Vol. 21, no 3, 032104- p.
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Physical Sciences
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URN: urn:nbn:se:umu:diva-88967DOI: 10.1063/1.4867490ISI: 000334180200026OAI: oai:DiVA.org:umu-88967DiVA: diva2:718963
Available from: 2014-05-22 Created: 2014-05-19 Last updated: 2017-12-05Bibliographically approved

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Stefan, MartinBrodin, Gert

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