Tripolar vortex in a plasma

Atsushi Okamoto; Kennichi Nagaoka; Shinji Yoshimura; Jovo Vranješ; Shinichiro Kado; Mitsuo Kono; Masayoshi Tanaka

doi:10.1109/TPS.2005.845376

Tripolar vortex in a plasma

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

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	452-453
Number of pages	2
Journal	IEEE Transactions on Plasma Science
Volume	33
Issue number	2 I
DOIs	https://doi.org/10.1109/TPS.2005.845376
Publication status	Published - Apr 1 2005

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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T1 - Tripolar vortex in a plasma

AU - Okamoto, Atsushi

AU - Nagaoka, Kennichi

AU - Yoshimura, Shinji

AU - Vranješ, Jovo

AU - Kado, Shinichiro

AU - Kono, Mitsuo

AU - Tanaka, Masayoshi

PY - 2005/4/1

Y1 - 2005/4/1

N2 - 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.

AB - 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.

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JO - IEEE Transactions on Plasma Science

JF - IEEE Transactions on Plasma Science

SN - 0093-3813

IS - 2 I

ER -

Tripolar vortex in a plasma

Abstract

All Science Journal Classification (ASJC) codes

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