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Investigation of the parallel dynamics of drift-wave turbulence in toroidal plasmas

机译：环形等离子体中漂移波湍流的平行动力学研究

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摘要

The three-dimensional structure of drift-wave turbulence is studied in the core of the toroidal low-temperature plasma in the torsatron TJ-K. The results are compared with simulations from the GEM3 turbulence code. In experiment and simulation, the dimensionless parameters are similar to those of fusion edge plasmas. Arrays with 64 probes are used to measure parallel wavenumbers, propagation velocities and the tilt of the turbulent structures with respect to the field line. A parallel wavelength of 15m and a parallel velocity in between the ion-sound and the Alfven velocity con. rm the three-dimensional nature of drift-wave turbulence. Quantitative agreement between experiment and simulation is found. The comparison with the drift-wave dispersion relation gives evidence for the coupling of the density perturbation to the shear-Alfven wave.
机译：研究了旋风TJ-K中环形低温等离子体核心的漂移波湍流三维结构。将结果与GEM3湍流代码的仿真进行比较。在实验和仿真中，无量纲参数与融合边缘等离子体的参数相似。具有64个探头的阵列用于测量平行波数，传播速度以及湍流结构相对于磁力线的倾斜度。平行波长为15m，平行速度在离子声和Alfven速度con之间。 rm漂移波湍流的三维性质。发现实验与模拟之间的定量一致性。与漂移波色散关系的比较为密度扰动与剪切阿尔夫文波的耦合提供了证据。

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