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Author(s):
S.-I. Iton, K. Itoh, A. Fukuyama, M. Yagi
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Title:
Theory of Anomalous Transport in H-Mode Plasmas
Date of publication:
May 1993
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Key words:
H-mcde, Anomalous transport, Transport barrier, Radial electric field shear, Current diffusivity, Tokamak, Ballooning instability, Self-sustained turbulence
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Abstract:
Theory of the anomalous transport is developed, and the unified formula for the L- and H-mode plasmas is presented. The self-sustained ballooning-mode turbulence is solved in the presence of the inhomogeneous radial electric field, E_r. Reductions in transport coefficients and the amplitude and decorrelation length of fluctuations due to E_r' are quantitatively analyzed. Combined with the E_r-bifurcation model, the thickness of the transport barrier is simultaneously determined.
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