论文标题
有限β等离子体剪切流动的磁场的漂移 - alfven稳定性不均匀离子温度
Drift-Alfven instabilities of a finite beta plasma sheared flow along a magnetic field with inhomogeneous ion temperature
论文作者
论文摘要
研究了有限β等离子体的磁场中的漂移级别的不稳定性，具有可比的不均匀离子温度和均匀电子温度。根据静电和电磁电位的一组方程的数值解，对不稳定性的发展进行了定量讨论。发现电磁离子动力学响应的核算通常在现有的对稳定等离子体的漂移 - alfven不稳定性的讨论中被忽略，揭示了由离子温度梯度的耦合作用驱动的新的漂移 - 弱点不稳定，流量速度剪切菌和离子landau dampau andau dampaun dampaundiention响应。激发的不稳定波具有与离子热速度相当的磁场沿磁场的相位速度，而生长速率与频率相当。
The drift-Alfven instabilities in the magnetic field aligned (parallel) sheared flow of a finite beta plasma with comparable inhomogeneous ion temperature and homogeneous electron temperature are examined. The development of instabilities are quantitatively discussed on the basis of numerical solution of a set of equations for the electrostatic and electromagnetic potentials. It is found that the accounting for the electromagnetic ion kinetic response, which has been ignored usually in existing discussions of the drift-Alfven instabilities of a steady plasma, reveals new drift-Alfven instability driven by the coupled action of the ion temperature gradient, the flow velocity shear, and the ion Landau damping. The excited unstable waves have the phase velocities along the magnetic field comparable with the ion thermal velocity, and the growth rate comparable with the frequency.
