Multiple States of Nonlinear Drift-Tearing Islands
Abstract
Nonlinear drift-tearing magnetic islands are studied numerically with a four-field model that includes the parallel ion dynamics. In certain regions of the parameter space, multiple solutions are found. In particular, linearly stable drift-tearing perturbations can grow to finite size magnetic islands when the amplitude of the initial perturbation is sufficiently large.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2004
- DOI:
- 10.1103/PhysRevLett.93.075001
- Bibcode:
- 2004PhRvL..93g5001O
- Keywords:
-
- 52.35.Py;
- 52.35.Kt;
- 52.55.Tn;
- Macroinstabilities;
- Drift waves;
- Ideal and resistive MHD modes;
- kinetic modes