Magnetohydrodynamic Stability pd Spheromak Palsma ib Spheroidal Flux Vonxernver-Application of Mercier Criterion-
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概要
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The MHD equilibrium configurations of spheromak plasmas in an oblatespheroidal flux conserver are determined for a pressure distribution whose derivativedp/dy vanishes on the magnetic axis, and for an optimized distribution which isneutrally stable for localized perturbations. Here y is the flux function. Theseequilibria are shown to be stable for symmetric modes. The stability for localizedmodes is investigated by the Mercier criterion. The values of the maximum beta ratiop... are evaluated for both pressure distributions and are shown to become about 1.5times larger by optimization. The beta ratio is defined by the value of 2p/BQ on themagnetic axis, where B, is the toroidal magnetic field. If the condition, q....< l, is re-quired, the values of p... are found to be less than 23%. Here q..?. is the value of thesafety factor on the magnetic axis.
- 社団法人日本物理学会の論文
- 1986-06-15
著者
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KAMITANI Atsushi
Department of Electrical and Information Engineering,Faculty of Engineering,Yamagata University
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KANEKO Shobu
Department of Applied Physics,Faculty of Engineering The University of Tokyo
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Kaneko S
Univ. Tokyo
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Kaneko Shobu
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Kamitani Atsushi
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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