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Anisotropic electrostatic turbulence and zonal flow generation

机译:各向异性静电湍流和纬向流产生

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摘要

In this paper we analyse the running and asymptotic diffusion coefficients of a plasma in the case of zonal flow generation by an anisotropic stochastic electrostatic potential. Both the weak and relatively strong turbulence regimes were analysed. The analysis of the diffusion coefficients in wave vector space provides an illustration of the fragmentation of drift wave structures in the radial direction and the generation of long-wavelength structures in the poloidal direction that are identified as zonal flows. We have shown that the fragmentation of drift wave structures is strongly influenced by the anisotropy parameter, the electrostatic Kubo number and by the initial values of the wave vector.
机译:在本文中,我们分析了在各向异性随机静电势产生的纬向流的情况下等离子体的运行和渐近扩散系数。分析了较弱和相对较强的湍流状态。对波向量空间中扩散系数的分析提供了径向上漂移波结构的碎片化以及沿极向的长波结构的生成(被识别为纬向流)的例证。我们已经表明,各向异性参数,静电久保数和波矢量的初始值会严重影响漂移波结构的破碎。

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