Turbulent transport is widely considered to be the main driver for cross-field transport in the scrape-off layer (SOL) of toroidal magnetized plasmas. Here, reciprocating Langmuir probes are employed to measure both the plasma profiles and the turbulent particle transport in the SOL of the Wendelstein 7-X stellarator. The relation between turbulent radial particle flux Γ_r and the local pressure gradient is often approximately linear across the entire SOL width, indicating that radial turbulence spreading is absent. This observation holds across a wide range of magnetic configurations and different plasma heating and density scenarios. The magnitude of the turbulent transport for a given gradient reveals a dependence on the magnetic configuration and the position in the SOL, which we relate to the cross-spectral characteristics of multi-tip floating potential measurements. Magnetic islands can add further complexity due to non-monotonic SOL profiles and the breaking of the transport-gradient relation. Finally, anomalous diffusion coefficients are determined from the probe measurements.

湍流传输被广泛认为是环形磁化等离子体的刮除层 (SOL) 中交叉场传输的主要驱动力。在这里，往复式朗缪尔探针用于测量 Wendelstein 7-X 仿星器的 SOL 中的等离子体轮廓和湍流粒子传输。湍流径向粒子通量Γ _r之间的关系并且局部压力梯度通常在整个 SOL 宽度上近似线性，表明不存在径向湍流扩散。这种观察适用于广泛的磁性配置和不同的等离子体加热和密度场景。给定梯度的湍流输运的幅度揭示了对磁构型和 SOL 中位置的依赖性，我们将其与多尖端浮动电位测量的交叉光谱特性相关。由于非单调 SOL 剖面和输运梯度关系的破坏，磁岛会进一步增加复杂性。最后，从探针测量中确定异常扩散系数。