An Energy Integral and Variational Principle for Plasma Kinetic Modes
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概要
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An energy principle is extended to include kinetic processes, finite gyroradius effects and wave-particle interactions, in electromagnetic instabilities in a toroidal plasma. The present arguments are based on the energy integrals which are derived from the eigenmode equations for electromagnetic perturbations. First, we include the finite gyroradius effects in the energy integral and show that this integral can be used for determining the eigenmode by minimizing the excess energy of the perturbed state. The extended stability conditions for kink-like mode and ballooning mode are obtained by use of this improved energy principle. For the case where wave-particle interaction is important, the energy integral becomes a rate equation of energy exchange, and a variational form can independently be constructed for the mode analysis.
著者
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Itoh Kimitaka
Research Information Center, Institute of Plasma Physics, Nagoya University
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Terashima Yoshinosuke
Research Information Center Institute Of Plasma Physics Nagoya University
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ITOH Sanae-Inoue
Research Information Center, Institute of Plasma Physics Nagoya University
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Itoh Sanae-inoue
Research Information Center Institute Of Plasma Physics Nagoya University:institute For Fusion Theor
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Itoh Kimitaka
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Physics Facu
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Terashima Yoshinosuke
Research Information Center, Institute of Plasma Physics Nagoya University
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