[Table of Contents]

Plasma and Fusion Research

Volume 6, 2403072 (2011)

Regular Articles

Effect of Parallel Diffusion of Equilibrium Pressure on Interaction between Interchange Mode and Static Magnetic Island
Kinya SAITO1), Katsuji ICHIGUCHI1,2) and Ryuichi ISHIZAKI1,2)
1)
The Graduate University for Advanced Studies, Toki 509-5292, Japan
2)
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 6 December 2010 / Accepted 18 April 2011 / Published 1 July 2011)

Abstract

The effect of equilibrium pressure diffusion parallel to the magnetic field on the interaction between a resistive interchange mode and a static magnetic island is studied by means of a nonlinear numerical simulation based on the reduced magnetohydrodynamics equations. Previous work for the case without the parallel diffusion of the equilibrium pressure [K. Saito et al., Phys. Plasmas 17, 062504 (2010)] showed that two solutions exist for a given error magnetic field: one indicates the increase of the island width in the nonlinear evolution of the interchange mode and the other indicates the decrease of the width. For the case with parallel diffusion of the equilibrium pressure, our present study shows that only the solution indicating the increase of the width exists; we discuss the causes for this.

Keywords

static magnetic island, interchange mode, parallel diffusion of equilibrium pressure

DOI: 10.1585/pfr.6.2403072

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This paper may be cited as follows:

Kinya SAITO, Katsuji ICHIGUCHI and Ryuichi ISHIZAKI, Plasma Fusion Res. 6, 2403072 (2011).