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Comparative experimental study of coherent structures in a simple magnetized torus

机译：简单磁化环中相干结构的对比实验研究

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This paper reports a comparative experimental study of large-scale coherent structures which are embedded in the turbulent fluctuations observed in a magnetized plasma device. The confining magnetic field is purely toroidal and has no rotational transform. Turbulent density fluctuations of two different plasma discharges are compared: thermionic discharge and inductive resonant wave heating. It turns out that fundamental features of spatiotemporal structures depend primarily on the plasma source and not on the magnetic field configuration. In the thermionic discharge plasma double-vortex structures and in the wave-heated plasma single-vortex structures are found. This can be attributed to the injection of mass and negative space charge in the case of thermionic discharge. The phase coherency is determined by the large-scale coherent structures. Phase shift of approximate to pi /2 between plasma potential and density structures changes in sign for the two different plasma sources. [References: 43]
机译：本文报道了对大型相干结构的对比实验研究，这些结构嵌入在磁化等离子体设备中观察到的湍流波动中。限制磁场是纯环形的，没有旋转变换。比较了两种不同等离子体放电的湍流密度波动：热离子放电和感应共振波加热。事实证明，时空结构的基本特征主要取决于等离子体源，而不取决于磁场结构。在热电子放电等离子体双涡结构和在波加热的等离子体单涡结构中。这可以归因于在热电子放电的情况下质量和负空间电荷的注入。相位相干性由大规模相干结构决定。对于两种不同的等离子体源，在等离子体电势和密度结构之间近似到pi / 2的相移会改变符号。 [参考：43]

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