MHD緩和現象に伴うイオン異常加熱について

概要

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An excess of magnetic energy is spontaneously released through MHD relaxation process. The released energy is dissipated by the ions and electrons. Using the classical resistivity andviscosity coefficients, the partition relation of the dissipated power into the electrons and ionshas been estimated. In a driven reconnection, where the growth rate of the instability is quitelarge, a slight compressibility of the velocity field results in strong viscous heating of the ions.Concerning the total energy balance, there exists an anomalous resistive dissipation throughmean-field current, when the resistivity distribution is not uniform. This is a counter processto the direct heating of the ions, which implies a direct loss channel for the applied energy throuirh the electrons.
社団法人プラズマ・核融合学会の論文