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Multi-region relaxed magnetohydrodynamics in plasmas with slowly changing boundaries --- resonant response of a plasma slab

Dewar, Robert; Hudson, Stuart R; Bhattacharjee, A; Yoshida, Zensho


The adiabatic limit of a recently proposed dynamical extension of Taylor relaxation, \emph{multi-region relaxed magnetohydrodynamics} (MRxMHD) is summarized, with special attention to the appropriate definition of relative magnetic helicity. The formalism is illustrated using a simple two-region, sheared-magnetic-field model similar to the Hahm--Kulsrud--Taylor (HKT) rippled-boundary slab model. In MRxMHD a linear Grad--Shafranov equation applies, even at finite ripple amplitude. The...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Physics of Plasmas
DOI: 10.1063/1.4979350


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