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 journalArticle

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 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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