Nonlinear studies of m=1 modes in high-temperature plasmas
- 1 November 1992
- journal article
- letter
- Published by AIP Publishing in Physics of Fluids B: Plasma Physics
- Vol. 4 (11) , 3469-3472
- https://doi.org/10.1063/1.860355
Abstract
Nonlinear evolution of the m=1 mode is examined in high‐temperature plasmas where the mode is in the semicollisional or collisionless regime. Unlike the finite −Δ’(m≥2) tearing modes, the nonlinear evolution of which is collisional, both the semicollisional and collisionless m=1 modes exhibit nonlinearly enhanced growth rates that far exceed their linear values, thus making their nonlinear evolution collisionless; this accelerated growth of a collisionless m=1 mode may explain the fast sawtooth crashes observed in large tokamaks.Keywords
This publication has 13 references indexed in Scilit:
- Two-fluid magnetohydrodynamic description of the internal kink mode in tokamaksPhysics of Fluids B: Plasma Physics, 1992
- Algebraic nonlinear growth of the resistive kink instabilityPhysics of Fluids B: Plasma Physics, 1991
- Linear studies of m=1 modes in high-temperature plasmas with a four-field modelPhysics of Fluids B: Plasma Physics, 1991
- Current sheets and nonlinear growth of the m=1 kink-tearing modePhysics of Fluids B: Plasma Physics, 1989
- Hamiltonian four-field model for nonlinear tokamak dynamicsPhysics of Fluids, 1987
- Analytic theory of the nonlinear m=1 tearing modePhysics of Fluids, 1986
- Nonlinear Evolution of Collisionless and Semicollisional Tearing ModesPhysical Review Letters, 1977
- Studies of Internal Disruptions andOscillations in Tokamak Discharges with Soft—X-Ray TecniquesPhysical Review Letters, 1974
- Nonlinear growth of the tearing modePhysics of Fluids, 1973
- Nonlinear properties of the internal m = 1 kink instability in the cylindrical tokamakPhysics of Fluids, 1973