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

Toshiro Kaneko; Yutaka Miyahara; Rikizo Hatakeyama; Noriyoshi Sato

doi:10.1143/JPSJ.69.2060

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

Toshiro Kaneko, Yutaka Miyahara, Rikizo Hatakeyama, Noriyoshi Sato

ENG - Electronic Engineering

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

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 language	English
Pages (from-to)	2060-2066
Number of pages	7
Journal	journal of the physical society of japan
Volume	69
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.69.2060
Publication status	Published - 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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10.1143/JPSJ.69.2060

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Cite this

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title = "Plasma Dike Potential Sustained by Local Electron Cyclotron Resonance along Converging Magnetic-Field Lines",

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.",

keywords = "Anisotropic electron temperature, Converging magnetic-field lines, Local electron cyclotron resonance, Low-frequency oscillations, Plasma-flow dike potential",

author = "Toshiro Kaneko and Yutaka Miyahara and Rikizo Hatakeyama and Noriyoshi Sato",

year = "2000",

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publisher = "Physical Society of Japan",

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TY - JOUR

T1 - Plasma Dike Potential Sustained by Local Electron Cyclotron Resonance along Converging Magnetic-Field Lines

AU - Kaneko, Toshiro

AU - Miyahara, Yutaka

AU - Hatakeyama, Rikizo

AU - Sato, Noriyoshi

PY - 2000/7

Y1 - 2000/7

N2 - 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.

AB - 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.

KW - Anisotropic electron temperature

KW - Converging magnetic-field lines

KW - Local electron cyclotron resonance

KW - Low-frequency oscillations

KW - Plasma-flow dike potential

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