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Improved evolution equations for magnetic island chains in toroidal pinch plasmas subject to externally applied resonant magnetic perturbations

Phys. Plasmas 8, 4489 (2001); doi:10.1063/1.1404384

Issue Date: October 2001

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Richard Fitzpatrick, Enrico Rossi, and Edmund P. Yu
Institute for Fusion Studies, Department of Physics, University of Texas at Austin, Austin, Texas 78712
An improved set of island evolution equations is derived that incorporates the latest advances in MHD (magnetohydrodynamical) theory. These equations describe the resistive/viscous-MHD dynamics of a nonlinear magnetic island chain, embedded in a toroidal pinch plasma, in the presence of a programmable, externally applied, resonant magnetic perturbation. A number of interesting example calculations are performed using the new equations. In particular, an investigation is made of a recently discovered class of multiharmonic resonant magnetic perturbations that have the novel property that they can lock resonant island chains in a stabilizing phase. ©2001 American Institute of Physics.
History: Received 1 May 2001; accepted 30 July 2001
Permalink: http://link.aip.org/link/?PHPAEN/8/4489/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.30.-q
    Physics of plasmas and electric discharges Plasma dynamics and flow
  • 52.35.Py
    Physics of plasmas and electric discharges Waves, oscillations, and instabilities in plasmas and intense beams Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.)
  • 52.55.Hc
    Physics of plasmas and electric discharges Magnetic confinement and equilibrium Stellarators, torsatrons, heliacs, bumpy tori, and other toroidal confinement devices
  • YEAR: 2001

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ISSN:
1070-664X (print)   1089-7674 (online)
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