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Phase mixing of shear Alfvén waves as a new mechanism for electron acceleration in collisionless, kinetic plasmas

Tsiklauri, D, Sakai, J-I and Saito, S 2005, 'Phase mixing of shear Alfvén waves as a new mechanism for electron acceleration in collisionless, kinetic plasmas' , New Journal of Physics, 7 , p. 79.

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Abstract

Particle-in-cell (kinetic) simulations of shear Alfv´en wave (AW) interaction with one-dimensional, across the uniform-magnetic field, density inhomogeneity (phase mixing) in collisionless plasma were performed for the first time. As a result, a new electron acceleration mechanism is discovered. Progressive distortion of the AW front, due to the differences in local Alfv´en speed, generates electrostatic fields nearly parallel to the magnetic field, which accelerate electrons via Landau damping. Surprisingly, the amplitude decay law in the inhomogeneous regions, in the kinetic regime, is the same as in the MHD approximation described by Heyvaerts and Priest (1983 Astron. Astrophys. 117 220).

Item Type: Article
Themes: Subjects / Themes > Q Science > QC Physics
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Journal or Publication Title: New Journal of Physics
Publisher: Institute of Physics
Refereed: Yes
ISSN: 13672630
Related URLs:
Depositing User: MDJ Davies
Date Deposited: 22 Oct 2007 13:27
Last Modified: 20 Aug 2013 15:55
URI: http://usir.salford.ac.uk/id/eprint/1564

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