境界層理論を用いた強制磁気再結合の解析

概要

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A new method is proposed to investigate forced reconnection due to boundary perturbations, in the form of a linear initial-value problem. This method is based on the boundary layer analysis, and provides an integral equation for the amount of reconnected flux. Because the integral equation includes the precise effect of inertia in the resistive layer, it allows us to investigate the reconnection process at time^<t≈τ>_AS^<1/3>. It, therefore, yields a criterion for the transition from a linear to a nonlinear stage without need of any assumptions, such as those of the constant-psi approximation or the requirement of helicity conservation. It also exhibits difficulties in the boundary layer analysis of the initial value problem for an equilibrium which is stable against the tearing mode.
社団法人プラズマ・核融合学会の論文
2001-10-25