Nonlinear ion Bernstein wave heating experiment in the WT-3 tokamak

Y. Yasaka, H. Takeno, M. Sakka, O. Sakai, R. Itatani, T. Fujimoto, H. Suemitsu, K. Takahata, M. Fukao, S. Tanaka, Y. Terumichi

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Ion Bernstein wave (IBW) heating at ion cyclotron half-harmonic frequencies was performed in hydrogen (H) discharges in the WT-3 tokamak. The bulk ion temperature increase was measured by a charge exchange analyser and a spatially scanning polychrometer. The latter diagnostics can provide radial ion-temperature profiles. The incremental ion temperature has shown a peak at the exact location where the IBW frequency omega equals 3/2 of the ion cyclotron frequency, indicating the nonlinear direct acceleration of H ions. The wave electric field was measured by a Langmuir probe in the scrape-off layer. The electric field at the second harmonic of the excited IBW frequency was observed to vary depending on the power level and the toroidal magnetic field. These experimental results are compared with the theoretical prediction of nonlinear IBW damping. The measured dependences of the ion heating and the wave amplitude at 2 omega on the toroidal magnetic field are in reasonable agreement with the prediction.

本文言語English
論文番号007
ページ(範囲)379-389
ページ数11
ジャーナルPlasma Physics and Controlled Fusion
35
3
DOI
出版ステータスPublished - 1993 12 1
外部発表はい

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

フィンガープリント 「Nonlinear ion Bernstein wave heating experiment in the WT-3 tokamak」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル