Inertia and ion Landau damping of low-frequency magnetohydrodynamical modes in tokamaks

A. Bondeson, Ming-Sheng Chu

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83 Citations (Scopus)

Abstract

The inertia and Landau damping of low-frequency magnetohydrodynamical modes are investigated using the drift-kinetic energy principle for the motion along the magnetic field. Toroidal trapping of the ions decreases the Landau damping and increases the inertia for frequencies below (r/R) 1/2v thi / qR. The theory is applied to toroidicity-induced Alfvén eigenmodes and to resistive wall modes in rotating plasmas. An explanation of the beta-induced Alfvén eigenmode is given in terms of the Pfirsch-Schlüter-like enhancement of inertia at low frequency. The toroidal inertia enhancement also increases the effects of plasma rotation on resistive wall modes.

Original languageEnglish
Pages (from-to)3013-3022
Number of pages10
JournalPhysics of Plasmas
Volume3
Issue number8
DOIs
Publication statusPublished - 1996 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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