Plasma stability in magnetic traps I. Magnetohydrodynamic stability theory
- 1 January 1967
- journal article
- Published by IOP Publishing in Reports on Progress in Physics
- Vol. 30 (1) , 333-373
- https://doi.org/10.1088/0034-4885/30/1/308
Abstract
Recent developments in the linear theory of plasma stability in magnetic traps are described from a magnetohydrodynamic or quasi-fluid point of view. The stability against interchange of fairly general plasma distributions in open traps, which form magnetic wells satisfying the minimum-B criteria, is predicted in agreement with experiment, at least at low density. The situation with regard to closed traps is not so clear. Many new instabilities have been predicted as a result of including in a quasi-fluid theory fine-scale effects such as finite resistivity and ion mass. Systems stable according to 'ideal ' magnetohydro- dynamics, either because of sufficient magnetic shear or average-magnetic-well properties, are unstable, at least in some regions, to the new but weaker instabilities.Keywords
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