随机网中的粘滞岛和ExB电子漂移不稳定性引起的跨场粒子无序输运
Sticky islands in stochastic webs and anomalous chaotic cross-field particle transport by ExB electron drift instability
摘要：
ExB电子漂移不稳定性存在于许多等离子体装置中，是跨场粒子输运中的重要因素。在所产生的低频静电波的存在下，带电粒子的运动变得混乱，并在相空间中产生随机网络。我们定义了一个标度指数，在相空间中的传输，我们表明，运输是反常的，超扩散型。给定的模型参数的值，轨迹坚持不同类型的相空间中的岛屿，和他们不同的坚持时间的幂律统计产生连续的制度的超扩散输运。
英文摘要：
The ExB electron drift instability, present in many plasma devices, is an important agent in cross-field particle transport. In presence of a resulting low frequency electrostatic wave, the motion of a charged particle becomes chaotic and generates a stochastic web in phase space. We define a scaling exponent to characterise transport in phase space and we show that the transport is anomalous, of super-diffusive type. Given the values of the model parameters, the trajectories stick to different kinds of islands in phase space, and their different sticking time power-law statistics generate successive regimes of the super-diffusive transport.
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