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Author(s):
K. Itoh, S.-I. Itoh, A. Fukuyama, H. Sanuki and M. Yagi
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Title:
Confinement Improvement in H-Mode-Like Plasmas in Helical Systems
Date of publication:
June 1993
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Key words:
Toroidal Helical System, H-mode, Anomalous Transport, Radial Electric Field, Self-Sustained Turbulence
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Abstract:
The reduction of the anomalous transport due to the inhomogeneous radial electric field is theoretically studied for toroidal helical plasmas. The self-sustained interchange-mode turbulence is analysed for the system with magnetic shear and magnetic hill. For the system with magnetic well like conventional stellarators, the ballooning mode turbulence is studied. Influence of the radial electric field inhomogeneity on the transport coefficients and fluctuations are quantitatively shown. Unified theory of the transport coefficients in the L-node and H-mode-like plasmas are presented.
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