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

Y. Nariyuki, S. Matsukiyo, T. Hada

    研究成果: Contribution to journalArticle査読

    14 被引用数 (Scopus)

    抄録

    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.

    本文言語英語
    論文番号083004
    ジャーナルNew Journal of Physics
    10
    DOI
    出版ステータス出版済み - 8 5 2008

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(全般)

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