Inner layer problem for ideal MHD modes in a toroidal system

Tokuda, Shinji

When we solve the eigenvalue problem associated with the two-dimensional Newcomb equation, we can identify the stability of a tokamak plasma against ideal MHD perturbations. The eigenvalue problem does not give the physical growth rate when the plasma is unstable. However, we can determine the growth rate by constructing a dispersion relation that gives the relation between the growth rate and the eigenvalue. It is expected that the dispersion relation provides an effective and fast method of stability analysis of MHD modes close to the marginal stability against ideal MHD perturbations, and the relation can be extended for non-ideal MHD modes close to the marginal stability.

Language	:	English
Journal	:	Proceedings of 30th EPS Conference on Controlled Fusion and Plasma Physics (CD-ROM)
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Pages	:	4 Pages
Publication Year/Month	:	2003/00
Meeting title	:	30th EPS Conference on Controlled Fusion and Plasma Physics
Held date	:	2003/07
Location (city)	:	St. Petersburg
Location (country)	:	Russia
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Keywords	:	Newcomb Equation; Eigenvalue Problem; Dispersion Relation; Ideal MHD Mode; Marginal Stability; Tokamak
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Registration No. : B20030862
JAEA Abstracts No. : 320571
Paper Submission No. : 21019

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