<RESEARCH REPORT>Tail Anisotropy Instability during Plasma Current Rise by Lower-Hybrid Waves in a Tokamak

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概要

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• Tail anisotropy instability during lower-hybrid current rise is investigated. Tail formation by lower-hybrid waves is studied by using a Fokker-Planck equation combined with the return field and the rf associated terms. Quasi-linear relaxation of the electron tail distribution under the influence of the plasma waves excited due to the instability is examined. It is found that the instability condition is related to the strength of the parallel diffusion by lower-hybrid waves and the ratio of the electron cyclotron frequency to the electron plasma frequency. The time scale between the instability spikes and the suppression of the instability by electron cyclotron heating are also discussed.

• 核融合科学研究所の論文

著者

• 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

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