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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 14:27
    Last Modified: 20 Aug 2013 16:55
    URI: http://usir.salford.ac.uk/id/eprint/1564

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