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The spectrum of MHD flows about X points

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Abstract

A recently proposed method to calculate the spectrum of linear, incompressible, unbounded plasma flows is applied to magnetohydrodynamic flows about X points. The method transforms the two-dimensional spectral problem in physical space into a one-dimensional problem in Fourier space. The latter problem is far easier to solve. application of this method to X-point plasma flows results in two kinds of essential spectra. One kind corresponds to stable perturbations and the other one to perturbations that become overstable whenever the square of the poloidal Alfven Mach number becomes larger than 1. Apart from these two spectra, no other spectral values were found.

Year of Publication
1998
Journal
Journal of Plasma Physics
Volume
60
Number of Pages
421-446
Date Published
Aug-Sep
ISBN Number
0022-3778
DOI
PId
35d2d3951ffec05a39d1ece3a020de4d
Journal Article
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