Spontaneous Formation of a Plasma Hole in a Rotating Magnetized Plasma: A Giant Burgers Vortex in a Compressible Fluid

Kenichi Nagaoka, Atsushi Okamoto, Shinji Yoshimura, Mitsuo Kono, Masayoshi Y. Tanaka

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    Spontaneous formation of a cylindrical density cavity, or ”plasma hole,” has been observed in a rotating magnetized plasma. Density of the plasma hole is one-tenth of that of ambient plasma and is bounded by a steep transition layer of the order of several ion Larmor radii. The flow velocity field associated with the plasma hole is experimentally determined, exhibiting a monopole vortical structure. It is found that the vorticity distribution is localized near the center of the hole and is identified as a Burgers vortex. This is the first experimental observation of a Burgers vortex in a plasma.

    Original languageEnglish
    JournalPhysical review letters
    Volume89
    Issue number7
    DOIs
    Publication statusPublished - 2002

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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