Plasma Dike Potential Sustained by Local Electron Cyclotron Resonance along Converging Magnetic-Field Lines

Toshiro Kaneko, Yutaka Miyahara, Rikizo Hatakeyama, Noriyoshi Sato

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Plasma potential formation with electron cyclotron heating is investigated in a fully-ionized collisionless plasma flow along converging magnetic-field lines (monotonously increasing magnetic field) in the presence of a single electron cyclotron resonance (ECR) point. When the ECR point is located in a region of good curvature of the magnetic line, a potential hump (plug potential) with a potential dip (thermal barrier) is generated around the ECR point. This potential structure persists in the steady state, working as a plasma-flow dike potential. In case that the ECR point is located in a region of bad curvature, on the other hand, the dike potential is only transiently formed, and collapses gradually as low frequency curvature-driven instabilities grow.

Original languageEnglish
Pages (from-to)2060-2066
Number of pages7
Journaljournal of the physical society of japan
Volume69
Issue number7
DOIs
Publication statusPublished - 2000 Jul

Keywords

  • Anisotropic electron temperature
  • Converging magnetic-field lines
  • Local electron cyclotron resonance
  • Low-frequency oscillations
  • Plasma-flow dike potential

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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