Analysis of θ Pumping for Tokamak Current Drive
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概要
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Analysis of 0 pumping for tokamak current drive is presented. Diffusion of an exter-nally applied oscillating electric field into a tokamak plasma is examined. When theoscillating electric field is in the same direction as the stationary toroidal plasma cur-rent and the current density induced by the applied electric field is larger than theaverage density of the plasma current over the plasma cross section, the radial profileof the safety factor has an extremum near the plasma boundary region and MHD instabilities are excited. It is assumed that anomalous diffusion of the current inducedin the plasma boundary region takes place, so that the extremum in the radial profileof the safety factor disappears. The anomalous electric field due to this relaxation pro-cess has a net d.c. component, which is estimated, and the condition for tokamak current drive by 0 pumping is derived. Some numerical results are presented for the caseof a fusion grade plasma.
- 社団法人日本物理学会の論文
- 1987-01-15
著者
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MIYAMOTO Kenro
Department of physics,Faculty of Science,University of Tokyo
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Naito Osamu
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Resear
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Naito Osamu
Department Of Physics Faculty Of Sciences University Of Tokyo:naka Fusion Research Establishment Jap
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Miyamoto K
Department Of Chemistry For Materials Faculty Of Engineering Mie University
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Miyamoto Kenro
Department Of Physics Faculty Of Science University
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Miyamoto Kenro
Department Of Applied Physics Faculty Of Engineering Seikei University
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