Micro-tearing stability in Tokamaks

J. W. Connor; S. C. Cowley; R. J. Hastie

doi:10.1088/0741-3335/32/10/004

Micro-tearing stability in Tokamaks

J. W. Connor, S. C. Cowley, R. J. Hastie

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46 Scopus citations

Abstract

The resonant layer equations governing tearing and micro-tearing modes in toroidal geometry are formulated and solved for a plasma in the banana regime and for wavelengths in the intermediate collisionality range nu _e< omega _*e< nu _e/ epsilon . It is shown that stability of such tearing modes is determined by a competition between destabilizing trapped electron dissipation and stabilizing effects arising from ion magnetization and collisional broadening of the passing-electron Landau resonance. Analytic stability criteria are derived, but for realistic parameters these modes are predicted to be stable.

Original language	English (US)
Article number	004
Pages (from-to)	799-817
Number of pages	19
Journal	Plasma Physics and Controlled Fusion
Volume	32
Issue number	10
DOIs	https://doi.org/10.1088/0741-3335/32/10/004
State	Published - 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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abstract = "The resonant layer equations governing tearing and micro-tearing modes in toroidal geometry are formulated and solved for a plasma in the banana regime and for wavelengths in the intermediate collisionality range nu e< omega *e< nu e/ epsilon . It is shown that stability of such tearing modes is determined by a competition between destabilizing trapped electron dissipation and stabilizing effects arising from ion magnetization and collisional broadening of the passing-electron Landau resonance. Analytic stability criteria are derived, but for realistic parameters these modes are predicted to be stable.",

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year = "1990",

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T1 - Micro-tearing stability in Tokamaks

AU - Connor, J. W.

AU - Cowley, S. C.

AU - Hastie, R. J.

PY - 1990

Y1 - 1990

N2 - The resonant layer equations governing tearing and micro-tearing modes in toroidal geometry are formulated and solved for a plasma in the banana regime and for wavelengths in the intermediate collisionality range nu e< omega *e< nu e/ epsilon . It is shown that stability of such tearing modes is determined by a competition between destabilizing trapped electron dissipation and stabilizing effects arising from ion magnetization and collisional broadening of the passing-electron Landau resonance. Analytic stability criteria are derived, but for realistic parameters these modes are predicted to be stable.

AB - The resonant layer equations governing tearing and micro-tearing modes in toroidal geometry are formulated and solved for a plasma in the banana regime and for wavelengths in the intermediate collisionality range nu e< omega *e< nu e/ epsilon . It is shown that stability of such tearing modes is determined by a competition between destabilizing trapped electron dissipation and stabilizing effects arising from ion magnetization and collisional broadening of the passing-electron Landau resonance. Analytic stability criteria are derived, but for realistic parameters these modes are predicted to be stable.

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IS - 10

M1 - 004

ER -

Micro-tearing stability in Tokamaks

Abstract

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