Characteristics of electron cyclotron waves creating field-aligned and transverse plasma-potential structures

K. Takahashi, T. Kaneko, R. Hatakeyama, A. Fukuyama

研究成果: Article査読

抄録

Characteristics of electromagnetic waves of azimuthal mode number m = ±1 are investigated experimentally, analytically and numerically when the waves triggering the field-aligned and transverse plasma-potential structure modification near an electron cyclotron resonance (ECR) point are injected into an inhomogeneously magnetized plasma with high-speed ion flow. The waves of m = +1 and -1 modes generate an electric double layer near the ECR point at the radially central and peripheral areas of the plasma column, respectively, and the transverse electric fields are consequently formed. At these areas the waves have a right-handed polarization and are absorbed through the ECR mechanism, where the experimental and analytical results do show the polarization reversal along the radial axis. The numerical results by plasma analysis by finite element method (FEM)/wave analysis by FEM (PAF/WF) code show that the wave-absorption area is localized at the radially central and peripheral areas for m = +1 and -1 mode waves, respectively, being consistent with the experimental and analytical ones.

本文言語English
論文番号125007
ジャーナルPlasma Physics and Controlled Fusion
51
12
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 凝縮系物理学

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