Guiding-centre theory for kinetic-magnetohydrodynamic modes in strongly flowing plasmas

Samuel Lanthaler, Jonathan P Graves, David Pfefferlé, Wilfred Anthony Cooper

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5 Citations (Scopus)
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Abstract

A kinetic MHD model with kinetic pressure closure is derived from a consistent guiding-centre framework. Higher-order (gyroviscous) corrections to the pressure tensor are derived in complex geometry from a reduced kinetic equation. The proposed model allows for flows of the order of the thermal ion velocity, taking into account important centrifugal effects due to the E × B flow, as well as the effects of diamagnetic flows associated with finite Larmor radius corrections to both ion fluid inertia and long mean free path contributions. Wave-particle interactions, such as toroidal drift-resonance, are retained. Furthermore, the linearized model includes a quasi-neutrality equation, allowing the effects of a parallel electric field to be studied in fast rotating tokamak plasmas.
Original languageEnglish
Article number 074006
Number of pages21
JournalPlasma Physics and Controlled Fusion
Volume61
Issue number7
DOIs
Publication statusPublished - 30 May 2019

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