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Linear collisionless dynamics of the GAM with kinetic electrons: Comparison simulations/theory

机译:带有动力学电子的游戏线性碰撞动态:比较模拟/理论

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摘要

Barely trapped and passing electrons have been recently predicted to strongly enhance the damping rate of Geodesic Acoustic Modes (GAMs) in tokamak plasmas, while keeping their real frequency almost unchanged as compared to the case with adiabatic electrons. In this paper, dedicated gyrokinetic simulations are successfully compared with these analytical predictions. Specifically, the scaling of the GAM damping rate with respect to the ion to electron mass ratio, to the electron to ion temperature ratio, to the safety factor, and to the aspect ratio is recovered in most regions of the relevant parameter space.
机译:最近已经预测勉强捕获和传递电子,以强烈提高托卡马克等离子体中的测地声学模式(Gams)的阻尼率,同时与具有绝热电子的壳体相比,保持其实际频率几乎不变。 在本文中,与这些分析预测相比,专用的陀螺仿真成功。 具体地,在相关参数空间的大多数区域中回收到安全系数,对安全系数相对于离子到电子质量比的GAM阻尼速率与电子质量比的缩放。

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