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Author(s):
M. Uchida, A. Fukuyama, K. Itoh, S.-I. Itoh and M. Yagi
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Title:
Analysis of Current Diffusive Ballooning Mode in Tokamaks
Date of publication:
Dec. 1999
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Key words:
ballooning mode, current diffusivity, turbulent transport, finite gyroradius effect
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Abstract:
The effect of finite gyroradius on the current diffusive ballooning mode is examined. Starting from the reduced MHD equations including turbulent transports, coupling with drift motion and finite gyroradius effect of ions, we derive a ballooning mode equation with complex transport coefficients. The eigenfrequency, saturation level and thermal diffusivity are evaluated numerically from the marginal stability condition. Preliminary results of their parameter dependence is presented.
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