Production of high poloidal beta plasma by bidirectional lower hybrid current drive in the wt-3 tokamak

T. Maekawa, M. Iida, H. Tanaka, S. Ide, K. Hanada, T. Minami, T. Fukino, Y. Terumichi, S. Tanaka

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

Lower hybrid waves propagating both parallel and anti-parallel to the toroidal field (bidirectional waves) produce suprathermal electron tails in both directions. The contribution of these tails is additive for the pressure but subtractive for the plasma current Ip. Therefore, the poloidal beta due to tail electrons, ßptai1, becomes much larger than that in the usual case of unidirectional current drive, where ßptai1 exceeds unity only when Ip is smaller than the Alfvèn critical current IA. In the WT-3 tokamak, lower hybrid current drive plasmas produced by bidirectional and unidirectional injection have been compared in terms of ßp. The experimental results show that a high ßp plasma is generated with Ip larger than IA in the bidirectional case.

本文言語英語
ページ(範囲)1394-1398
ページ数5
ジャーナルNuclear Fusion
31
7
DOI
出版ステータス出版済み - 7 1991
外部発表はい

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 凝縮系物理学

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