<RESEARCH REPORT>Stability of Spheromak against Current Driven Modes : Effects of Flux Hole on Stability

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概要

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• The effects of the flux hole on the magnetohydrodynamic (MHD) stability of the spheromak are investigated. Since finite element codes such as ERATO code and ERATO-J code are not able to analyse the plasma containing the symmetry axis in itself, the numerical code by use of which the linearized MHD equation can be integrated in time has been developed. By use of this code, linear growth rates of the n=1 mode are evaluated as functions of the flux-hole size and the prolateness parameter L/R, where L and R denote the height and the radius of the drum-type flux conserver, respectively. The results of computations show that the flux hole has the destabilizing effects on the spheromak and that a stable configuration with a small flux hole is obtained when the flux conserver is oblate enough to satisfy L/R≲1.8±0.1.

• 核融合科学研究所の論文

著者

• Kamitani Atsushi

  Research Information Center Institute Of Plasma Physics Nagoya University:department Of Applied Phys

関連論文

• Stability of Spheromak against Current Driven Modes : Effects of Flux Hole on Stability

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