【摘要】 本文讨论了低频漂移波与托卡马克中反常输运的经验规律——赝经典扩散间的关系。文中指出,主要是无碰撞漂移波而不是耗散漂移波导致了赝经典扩散。当线性不稳定的无碰撞漂移波主要地由准线性弛豫过程所饱和时,可以导致赝经典形式的反常扩散,它正比于碰撞频率而与波幅关系不大。估计的反常扩散系数在量级上与实验一致。讨论了上述机制有效的参数范围。更多还原

【Abstract】 In this paper, the relationship between the low frequency drift wave and the empirical law of anomalous transport in Tokamak the pseudo-classical diffusion is discussed. We show that, it is the collisionless drift wave, rather than the dissipative one, which corresponds to the pseudoelassical diffusion. If the linear unstable collision-less drift wave is saturated mainly by the quasi-linear relaxation process, it can lead to a diffusion of the pseudo-classical type. The estimated diffusion coefficient agrees with experiment within an order of magnitude. The range of the parameters in which the above mentioned mechanism may be effective is discussed.更多还原