Perturbative approach to the nonlinear saturation of the tearing mode for any current gradient

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dc.creatorArcis, N.
dc.creatorEscande, D. F.
dc.creatorOttaviani, M.
dc.date2005-01-26
dc.date.accessioned2026-07-07T05:54:02Z
dc.date.available2026-07-07T05:54:02Z
dc.descriptionWithin the traditional frame of reduced MHD, a new rigorous perturbation expansion provides the equation ruling the nonlinear growth and saturation of the tearing mode for any current gradient. The small parameter is the magnetic island width w. For the first time, the final equation displays at once terms of order w ln(1/w) and w which have the same magnitude for practical purposes; two new O(w) terms involve the current gradient. The technique is applicable to the case of an external forcing. The solution for a static forcing is computed explicitly and it exhibits three physical regimes.
dc.description4 pages, submitted to Physical Review Letters
dc.identifierhttps://arxiv.org/abs/physics/0501136
dc.identifierhttp://arxiv.org/abs/physics/0501136
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/86837
dc.subjectPlasma Physics
dc.titlePerturbative approach to the nonlinear saturation of the tearing mode for any current gradient
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