Self-similarity properties of the probability distribution function of turbulence-induced particle fluxes at the plasma edge
Self-similarity properties of the probability distribution function of turbulence-induced particle fluxes at the plasma edge
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DOI：
10.1103/physrevlett.83.3653
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发表时间：
1999-11-01
影响因子：
8.6
通讯作者：
Endler, M
中科院分区：
文献类型：
--
作者：
Carreras, BA;van Milligen, B;Endler, M
在两个不同的时间尺度范围内，等离子体边缘的湍流诱导粒子通量的概率分布函数具有不同的函数形式。一个范围对应于波动时间尺度，另一个是中尺度范围：湍流解相关和约束时间之间的时间尺度。在第二个范围内，概率分布函数是自相似的，基本上只有向外的Aux尾。这种结构反映了底层湍流的某些机制。
The probability distribution function of the turbulence-induced particle flux at the plasma edge has distinct functional forms over two distinct ranges of time scales. One range corresponds to the fluctuation time scales and the other one is the mesoscale range: time scales between the turbulence decorrelation and confinement time. In the second range, the probability distribution function is selfsimilar and essentially has only the outward Aux tail. This structure reflects some of the mechanisms of the underlying turbulence.