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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >On turbulence-correlation analysis based on correlation reflectometry
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On turbulence-correlation analysis based on correlation reflectometry

机译：基于相关反射法的湍流相关分析

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Drift wave micro-turbulence is the main source of anomalous transport in a tokamak. Correlation reflectometry is a powerful diagnostic tool which provides information on plasma turbulence and subsequently on underlying instability. In this paper, theoretical expressions for the analysis of radial correlation reflectometry (RCR) data are derived. Integral kernels, which convert the correlation function of two microwave reflectometry signals into a correlation function of plasma turbulence and inverse, are discussed. The analytical expression and the method of combining the RCR diagnostic and another local density fluctuation (e.g. Doppler enhanced scattering or heavy ion beam probe) is proposed. The correlation between reflectometry signals and those from other local fluctuation measurements is analysed. The long-range tail of the correlation decays much more gradually than the turbulence correlation, however, it decays faster than that of two microwave reflectometry signals. The way to calculate turbulence wave number spectrum for this case is also proposed.
机译：漂移波微湍流是托卡马克异常运输的主要来源。相关反射法是一种功能强大的诊断工具，可提供有关等离子体湍流以及随后的不稳定性的信息。本文推导了径向相关反射法（RCR）数据分析的理论表达式。讨论了将两个微波反射测量信号的相关函数转换为等离子体湍流和逆函数的相关函数的积分核。提出了将RCR诊断与另一种局部密度波动（例如多普勒增强散射或重离子束探针）相结合的分析表达式和方法。分析了反射测量信号与其他局部波动测量结果之间的相关性。该相关的远距离尾部的衰减比湍流相关的衰减要慢得多，但是，其衰减比两个微波反射测量信号的衰减快。还提出了这种情况下湍流波谱的计算方法。

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