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Magnetic island: Difference between revisions
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→Island rotation
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Islands can rotate within and/or with respect to the ambient plasma. | Islands can rotate within and/or with respect to the ambient plasma. | ||
The observation of such rotating 'MHD modes' is ubiquitous in fusion plasmas. | The observation of such rotating 'MHD modes' is ubiquitous in fusion plasmas with typical frequencies of the order of several tens of kHz. | ||
If the ambient magnetic | The detection of such modes is possible by measuring perturbations of the magnetic field, or the electron density, temperature, or pressure. | ||
If the ambient magnetic field (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> | <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> | ||