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.
Multiple states of nonlinear drift-tearing islands / Ottaviani, M., Porcelli, F., Grasso, D.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 93:(2004), pp. 0750011-0750014.
Multiple states of nonlinear drift-tearing islands
PORCELLI, Francesco;D. GRASSO
2004
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.File in questo prodotto:
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