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The stability of rotating magnetic islands in homogenous plasmas is studied taking into account the ion polarization current and ion sound effects. Coupling to the ion sound dynamics occurs due to the modification of the ion plasma density that is no longer a function of the magnetic flux surfaces when the ion polarization drift is included. It is shown that while the ion polarization current is destabilizing, the ion sound effects turn out to be stabilizing in homogenous plasmas.

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Authors: SMOLYAKOV A I, University of Saskatchewan, Department of Physics and Engineering Physics, Saskatoon (CA);WILSON H R, UKAEA Government Division, Fusion, Culham (UK);PORCELLI F, Istituto Nazionale Fisica della Materia, Politecnico di Torino, Department of Energetics, Torino (IT);OTTAVIANI M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in: Plasma Phys. Control. Fusion 46 (2004) L1�L6 PII: S0741-3335(04)73497-1
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