Parametric instabilities of large-amplitude parallel propagating Alfvén waves: 2D PIC simulation

Y. Nariyuki, S. Matsukiyo, T. Hada

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    Abstract

    We discuss the parametric instabilities of large-amplitude parallel propagating Alfvén waves using the 2D PIC simulation code. First, we confirmed the results from a previous study (Sakai et al 2005 New J, Phys. 7 233) that the electrons are heated due to the modified two-stream instability and that the ions are heated by the parallel propagating ion acoustic waves. However, although the past study argued that such parallel propagating longitudinal waves are excited by transverse modulation of the parent Alfvén wave, we consider these waves are more likely to be generated by the usual, parallel decay instability. Further, we performed other simulation runs with different polarization of the parent Alfvén waves or different ion thermal velocity. Numerical results suggest that electron heating by the modified two-stream instability due to the large amplitude Alfvén waves is unimportant with most parameter sets.

    Original languageEnglish
    Article number083004
    JournalNew Journal of Physics
    Volume10
    DOIs
    Publication statusPublished - Aug 5 2008

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    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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