Tripolar vortex in a plasma

Atsushi Okamoto, Kennichi Nagaoka, Shinji Yoshimura, Jovo Vranješ, Shinichiro Kado, Mitsuo Kono, Masayoshi Y. Tanaka

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    A tripolar vortex is spontaneously generated in a magnetized plasma. The flow velocity field of ions has been measured with a directional Langmuir probe, exhibiting the tripolar structure in vorticity distribution. The most remarkable feature of the tripolar vortex is that the polarity of rotation of each vortex is opposite to that of E × B drift. It is found that the charge-exchange process with inhomogeneous background neutrals produces an effective force, which dominates the electric field and drives the plasma into anti-E × B rotation.

    Original languageEnglish
    Pages (from-to)452-453
    Number of pages2
    JournalIEEE Transactions on Plasma Science
    Issue number2 I
    Publication statusPublished - Apr 2005

    All Science Journal Classification (ASJC) codes

    • Nuclear and High Energy Physics
    • Condensed Matter Physics


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