Numerical Study of Current-Driven Collisional Drift and Alfven Instabilities in a Sheared Magnetic Field

概要

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A set of coupled eigenmode equations for drift and shear Alfv<Sn mode in asheared magnetic field is solved numerically, including effects of the parallelcurrent, the full ion dynamics and electron-ion collisions. Detailed studies aremade on the eigenmode structures of both the naodes and combined effects ofcurrent and finite-/?. An outstanding result is that the Current-driven drift modeshows, at some moderate fi value, a peculiarity in dispersion and its eigenmodestructure is deformed to a shape different from the drift mode one, which meansthe strong coupling of drift mode to shear Alfvc:n mode due to the combinedeffects. In the most cases except this, the effects of finite-/? and collisions Qre foundto be stabilizing.
社団法人日本物理学会の論文
1980-06-15