Formation of plasma-flow dike potential due to local ECR along converging magnetic-field lines

Toshiro Kaneko, Yutaka Miyahara, Rikizo Hatakeyama, Noriyoshi Sato

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1 Citation (Scopus)

Abstract

The formation of a plasma potential is experimentally investigated in a fully-ionized collisionless plasma flow along converging magnetic-fieldlines in the presence of a single ECR point. When the ECR occurs in the region of converging region, the potential profile is observed to be drastically modified. The resultant potential structure consists of a negative potential dip and a subsequent positive potential hump working as a plasma-flow dike potential, which persists in the steady state when the ECR point is located in a region of good curvature of the magnetic configuration. However, this potential structure temporally collapses when the ECR point is located in a bad curvature region. The phenomenon is considered to be caused by low-frequency flute and drift instabilities.

Original languageEnglish
Pages (from-to)335-339
Number of pages5
JournalFusion Technology
Volume35
Issue number1 SPEC. ISS.
Publication statusPublished - 1999 Dec 1

ASJC Scopus subject areas

  • Engineering(all)

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