Tail-Anisotropy Instability during Plasma Current Rise by Lower-Hybrid Waves in a Tokamak

スポンサーリンク

概要

• 論文の詳細を見る

• The instability due to anisotropy of the electron tail temperatures during lower-hybrid current rise is investigated. Tail formation by lower-hybrid waves is studied byusing a Fokker-Planck equation combined with the return field and the rf-associatedterms. Quasi-linear relaxation of the electron tail distibution under the influence ofthe plasma waves excited by the instability is examined. It is found that the instabilitycondition is related to the diffusion coefficient due to lower-hybrid waves, and thatthe decrease in the toroidal magnetic field can lead to the instability. The time scalebetween the instability spikes can be explained by that for the flat tail formation bylower-hybrid waves. The suppression of the instability by electron cyclotron heatingis also studied. It is confirmed that the mechanism of the suppression is the enhance-ment of the perpendicular electron temperature.

• 社団法人日本物理学会の論文
• 1986-05-15

著者

• Yamagiwa Mitsuru

  Institute Of Plasmd Physics Nagoya University:department Of Thermonuclear Fu-sion Research Japan Ato

• Yamagiwa Mitsuru

  Institute Of Plasma Physics Nagoya University

関連論文

• Numerical Calculation on a Mechanism of Current Sustainment during LHCD
• Tail-Anisotropy Instability during Plasma Current Rise by Lower-Hybrid Waves in a Tokamak
• Tail Anisotropy Instability during Plasma Current Rise by Lower-Hybrid Waves in a Tokamak
• Interchange Instabilities in a Pellet Injected Current-Free Plasma of Heliotron E
• Collisional Relaxation of Electron Tail Distribution

スポンサーリンク