Gyrokinetic particle-in-cell simulations of Alfvén eigenmodes in presence of continuum effects

First-principle gyrokinetic particle-in-cell simulations of a global Toroidal Alfvén Eigenmode (TAE) are undertaken in the presence of a strong coupling with the continuum. Effects of the bulk plasma temperature on the interplay between the TAE and Kinetic Alfvén Waves (KAWs) are investigated. A glo...

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Bibliographic Details
Published in:Physics of plasmas 2014-05, Vol.21 (5)
Main Authors: Mishchenko, Alexey, Könies, Axel, Hatzky, Roman
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
First principles
ION TEMPERATURE
IONS
Particle in cell technique
Plasma
Plasma physics
Plasma temperature
SIMULATION
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Summary:First-principle gyrokinetic particle-in-cell simulations of a global Toroidal Alfvén Eigenmode (TAE) are undertaken in the presence of a strong coupling with the continuum. Effects of the bulk plasma temperature on the interplay between the TAE and Kinetic Alfvén Waves (KAWs) are investigated. A global TAE-KAW structure is identified which appears to be more unstable with respect to the fast ions than a simple (fluid-like) TAE mode.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4881417