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Stability properties of cold mantle systems for current-driven modes

Published online by Cambridge University Press:  13 March 2009

D. Ohlsson
D. Ohlsson
Affiliation:
Division of Plasma Physics with Fusion Research, Royal Institute of Technology, S.10044 Stockholm, Sweden
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Abstract

The stability problem of the boundary regions of cold blanket systems with induced currents parallel to the lines of force is formulated. Particular interest is focused on two types of mode: first electrostatic modes driven by the combined effects of a transverse resistivity gradient due to a spatially non-uniform electron temperature and a longitudinal current, second electromagnetic kink-like modes driven by the torque arising from a transverse current density gradient and magnetic field perturbations. It is found that the combination of various dissipative and neutral gas effects introduces strong stabilizing effects within specific parameter ranges. For particular steady-state models investigated it is shown that these effects become of importance in laboratory plasmas at relatively high densities, low temperatures and moderate magnetic field strengths. Stability diagrams based on specific steady-state cold plasma blanket models will be presented.

Information

Type
Research Article
Information
Journal of Plasma Physics , Volume 23 , Issue 3 , June 1980, pp. 383 - 400
Copyright
Copyright © Cambridge University Press 1980

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