Numerical Investigation of Current Driven Dissipative Drift Wave Turbulence Including Finite β and Quasilinear Effects in a Tokamak Plasma

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概要

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• Excitation of dissipative drift wave turbulence with waves propagating perpendicular to the density gradient is studied numerically, taking an average over the gradient coordinate. Both situations where the plasma current is the main source of instability and situations more close to an ordinary dissipative drift wave excitation have been investigated in the presence of finite β effects and ion viscosity. The main saturation mechanism has been quasilinear modification of the background density. This is in contrast to an earlier investigation of the collisionless instability where a shear in the E × B velocity due to the quasilinear ambipolar E field was the stabilization mechanism. In addition to the usual current induced growth, the current is also found to decrease the finite β stabilization.

• 核融合科学研究所の論文

著者

• Weiland Jan

  Research Information Center Institute Of Plasma Physics Nagoya University:institute For Electromagne

関連論文

• Numerical Investigation of Current Driven Dissipative Drift Wave Turbulence Including Finite β and Quasilinear Effects in a Tokamak Plasma

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