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Resistive wall mode in cylindrical plasmas in the presence of surface currents

Published online by Cambridge University Press:  13 February 2012

SHAOYAN CUI ,
GAIMIN LU  and
YUE LIU
SHAOYAN CUI
Affiliation:
School of Mathematics and Information, Ludong University, Yantai 264025, China (shycui@ldu.edu.cn)
GAIMIN LU
Affiliation:
Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
YUE LIU
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
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Abstract

Stability of the resistive wall mode in cylindrical plasmas confined by surface currents is investigated for the δ-function and step-function equilibrium surface-current profiles. For the former, it is shown that the perturbations oscillate and even decay for all locations of the initial perturbation. The entire system is stable and the plasma flow has little effect. For the step-function surface-current distribution, it is found that the thicker the surface current layer, the more stable is the system even if the largest initial perturbation is located on the rational surface, but the plasma flow also has little effect on the system.

Type
Papers
Information
Journal of Plasma Physics , Volume 78 , Issue 5 , October 2012 , pp. 501 - 506
Copyright
Copyright © Cambridge University Press 2012

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