Kinetic Theory of Global n=1 Instabilities in Toroidal Plasmas

Kimitaka Itoh, Sanae Itoh, Takashi Tlda, Shinji Tokloa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The kinetic theory of the global n=1 instabilities of finite-pressure tokamak plasmas with circular cross-section is investigated in collisionless limit (m, n: poloidal and toroidal mode numbers). Wave-particle interactions and finite gyroradius effect are included. The radial-poloidal eigenmode equations are directly solved numerically. The m=1 internal/tearing mode, n= 1 ballooning mode and m= 2 tearing mode are identified with a fixed boundary condition. The m=1 internal mode turns out to be the collisionless tearing mode in low pressure regimes. The pressure driven ballooning mode is connected with the electrostatic-like ballooning mode. The toroidal coupling further stabilizes the m = 2 tearing mode, which is destabilized by the parallel current and can be stabilized by coupling with drift branch. Analytical studies are made by using the energy integral.

Original languageEnglish
Pages (from-to)1759-1774
Number of pages16
Journaljournal of the physical society of japan
Volume53
Issue number5
DOIs
Publication statusPublished - Jan 1 1984

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toroidal plasmas
kinetic theory
ballooning modes
wave-particle interactions
low pressure
electrostatics
boundary conditions
cross sections
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Kinetic Theory of Global n=1 Instabilities in Toroidal Plasmas. / Itoh, Kimitaka; Itoh, Sanae; Tlda, Takashi; Tokloa, Shinji.

In: journal of the physical society of japan, Vol. 53, No. 5, 01.01.1984, p. 1759-1774.

Research output: Contribution to journalArticle

Itoh, Kimitaka ; Itoh, Sanae ; Tlda, Takashi ; Tokloa, Shinji. / Kinetic Theory of Global n=1 Instabilities in Toroidal Plasmas. In: journal of the physical society of japan. 1984 ; Vol. 53, No. 5. pp. 1759-1774.
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