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Gyrokinetic stability of electron–positron–ion plasmas

Published online by Cambridge University Press:  21 February 2018

A. Mishchenko Open the ORCID record for A. Mishchenko [Opens in a new window] ,
A. Zocco ,
P. Helander  and
A. Könies
A. Mishchenko*
Affiliation:
Max Planck Institute for Plasma Physics, D-17491 Greifswald, Germany
A. Zocco
Affiliation:
Max Planck Institute for Plasma Physics, D-17491 Greifswald, Germany
P. Helander
Affiliation:
Max Planck Institute for Plasma Physics, D-17491 Greifswald, Germany
A. Könies
Affiliation:
Max Planck Institute for Plasma Physics, D-17491 Greifswald, Germany
*
†Email address for correspondence: [email protected]
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Abstract

The gyrokinetic stability of electron–positron plasmas contaminated by an ion (proton) admixture is studied in a slab geometry. The appropriate dispersion relation is derived and solved. Stable K-modes, the universal instability, the ion-temperature-gradient-driven instability, the electron-temperature-gradient-driven instability and the shear Alfvén wave are considered. It is found that the contaminated plasma remains stable if the contamination degree is below some threshold and that the shear Alfvén wave can be present in a contaminated plasma in cases where it is absent without ion contamination.

Keywords

plasma instabilitiesplasma waves
Type
Research Article
Information
Journal of Plasma Physics , Volume 84 , Issue 1 , February 2018 , 905840116
Copyright
© Cambridge University Press 2018 

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