Tearing Mode Instability due to Anomalous Resistivity : Fluids, Plasmas, and Electric Discharges
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概要
- 論文の詳細を見る
Tearing mode instability in the presence of microscopic turbulence is investigated. The effects of microscopic turbulence on global MHD mode are taken as drags which are calculated by one-point renormalization method and mean-field approximation. These effects are reduced to effective ion viscosity, resistivity and thermal conductivity in reduced MHD equations. Using these equations, the stability analyses of the tearing mode are performed. It is shown that a finite amplitude of fluctuation enhances the growth rate of t,earing mode. For very high values of turbulent diffusivities, marginally stable state exists. The effects of each turbulent diffusivity on mode stability are examined near marginal stability boundary. Parameter dependence on the growth rate of tearing mode is analyzed with/without the microscopic turbulence. For the microscopic turbulence, a resistive ballooning mode (RBM) turbulence and ion temperature gradient (ITG) turbulence are considered as examples.
- 社団法人日本物理学会の論文
- 2001-02-15
著者
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YAGI Masatoshi
Research Institute for Applied Mechanics, Kyushu University
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ITOH Sanae-I.
Research Institute for Applied Mechanics, Kyushu University
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Yagi Masatoshi
Research Instittue For Applied Mechanics Kyushu University
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Itoh Sanae-i.
Research Instittue For Applied Mechanics Kyushu University
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Furuya A
Interdisciplinary Graduate School Of Engineering Sciences Kyushu University
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Furuya Atsushi
Faculty Of Pharmaceutical Sciences Osaka University
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Furuya Atsushi
Interdisciplinary Graduate School Of Engineering Sciences Kyushu University
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