Several results based on the Langmuir probes’ data on the HL-2A tokamak are presented. The blob structures’ radial and poloidal drift velocities, estimated by the gradient of floating potential and by time delay evaluation, are compared in different line-averaged density and electron cyclotron resonance heating conditions. A positive correlation is observed in the comparison between blobs’ radial velocity estimated by the two methods mentioned above, regardless of the situation differences mentioned above. Correlation is also observed in the comparison between the blobs’ poloidal velocity estimated by the two methods in different situations, while a shift due to the different line-averaged density is observed. These results imply that the radial gradient of floating potential may have some value as a reference during data analysis in low-parameter discharge.

介绍了基于朗缪尔探针在 HL-2A 托卡马克上的数据的几个结果。在不同的线平均密度和电子回旋共振加热条件下，比较了通过浮动电位梯度和时间延迟评估估计的斑点结构的径向和极向漂移速度。无论上述情况如何差异，通过上述两种方法估计的斑点径向速度之间的比较都观察到正相关。在不同情况下两种方法估计的斑点极向速度之间的比较中也观察到相关性，同时观察到由于不同线平均密度引起的偏移。