A review -observations of turbulence and structure in Magnetized Plasmas
A review -observations of turbulence and structure in Magnetized Plasmas
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DOI：
10.1585/pfr.5.046
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发表时间：
2010-12
影响因子：
0.8
通讯作者：
A. Fujisawa
中科院分区：
文献类型：
--
作者：
A. Fujisawa
磁化等离子体是一种非平衡物质，具有丰富的非线性现象，其结构形式主要是由湍流。本文简要回顾了湍流等离子体现象的实验和观测，重点介绍了表征湍流的方法，并可视化湍流产生的不可见结构和构成湍流的基本波之间的内部耦合。利用傅里叶变换、小波分析、概率密度函数分析、双相干、小波双相干等分析方法，研究了带状流、飘带、斑点等现象。最后，当代等离子体湍流的看法提出了与未解决的输运问题的讨论，在聚变等离子体中，如传输势垒的形成和非局域传输。
Magnetized plasma is an non-equilibrium matter rich in nonlinear phenomena; its structural formations are dominated by turbulence. This article provides a brief review of experiments and observations of phenomena occurring in turbulent plasmas, with an emphasis on the methodologies for characterizing turbulence, and visualizing the invisible structure created by turbulence and the internal couplings between the elemental waves that constitute turbulence. Zonal flows, streamers, blobs, and other phenomena are investigated by using analytical methods such as Fourier transformation, wavelet analysis, probabilistic density function analysis, bicoherence, wavelet bicoherence. Finally, the contemporary view of plasma turbulence is presented with discussion of unsolved transport issues in fusion plasmas, such as transport barrier formation and nonlocal transport.