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Magnetic island: Difference between revisions
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The rupture of the original topology of toroidally nested flux surfaces needed to produce the island requires the reconnection of magnetic field lines, which can only occur with finite resistivity. | The rupture of the original topology of toroidally nested flux surfaces needed to produce the island requires the reconnection of magnetic field lines, which can only occur with finite resistivity. | ||
<ref>[http://dx.doi.org/10.1088/0029-5515/49/10/104025 F.L. Waelbroeck, ''Theory and observations of magnetic islands'', Nucl. Fusion '''49''' (2009) 104025]</ref> | <ref>[http://dx.doi.org/10.1088/0029-5515/49/10/104025 F.L. Waelbroeck, ''Theory and observations of magnetic islands'', Nucl. Fusion '''49''' (2009) 104025]</ref> | ||
== Island rotation == | |||
Islands can rotate within and/or with respect to the ambient plasma. | |||
The observation of such rotating 'MHD modes' is ubiquitous in fusion plasmas. | |||
If the ambient magnetic fields (produced by external coils) has an appropriate structure, the island can also lock onto that structure. | |||
<ref>[http://link.aps.org/doi/10.1103/PhysRevLett.78.1703 F.L. Waelbroeck and R. Fitzpatrick, ''Rotation and Locking of Magnetic Islands'', Phys. Rev. Lett. '''78''' (1997) 1703–1706]</ref> | |||
== Transport effects == | == Transport effects == | ||