Interchange turbulence in the TCV scrape-off layer
Interchange turbulence in the TCV scrape-off layer
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DOI：
10.1088/0741-3335/48/1/l01
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发表时间：
2005
影响因子：
2.2
通讯作者：
Odd Erik Garcia;J. Horáček;R. Pitts;A. Nielsen;W. Fundamenski;Jonathan Graves;V. Naulin;J. Rasmusse
中科院分区：
文献类型：
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作者：
Odd Erik Garcia;J. Horáček;R. Pitts;A. Nielsen;W. Fundamenski;Jonathan Graves;V. Naulin;J. Rasmusse
对TCV托卡马克刮除层（SOL）中静电等离子体涨落的探针测量结果与二维交换湍流模拟的结果进行了比较。发现统计矩的径向变化和时间相关性都非常一致，清楚地表明托卡马克SOL中的湍流输运是由于斑点状对流结构的径向平流。这提供了一个解释的基本机制驱动的异常溶胶粒子传输和现在普遍观察到的广泛的粒子密度分布，深入到溶胶和被认为是高水平的主室等离子体壁相互作用的原因。
Probe measurements of electrostatic plasma fluctuations in the scrape-off layer (SOL) of the TCV tokamak are compared with the results from two-dimensional interchange turbulence simulations. Excellent agreement is found for both the radial variation of statistical moments and temporal correlations, clearly indicating that turbulent transport in the tokamak SOL is due to radial advection of blob-like filamentary structures. This offers an explanation both for the basic mechanism driving the anomalous SOL particle transport and the now commonly observed broad particle density profiles, extending deep into the SOL and thought to be the cause of high levels of main chamber plasma-wall interactions.