Effect of edge turbulent transport on scrape-off layer (SOL) width has been investigated in Ohmically heated L-mode plasma under limiter configurations on HL-2A tokamak. It has been found that SOL width is doubled when plasma current decreases about 20%. With larger plasma current, EנB shear is stronger and has greater suppression effect on edge turbulent transport. SOL width is larger when power of relative density fluctuation level in the edge region is larger. It is concluded that edge turbulent transport plays a significant role on SOL width. These experimental findings may provide a better understanding and controlling of power exhaust for present and future fusion devices.

在HL-2A托卡马克限制器配置下，在欧姆加热的L型等离子体中研究了边缘湍流传输对刮除层（SOL）宽度的影响。已经发现，当等离子体电流降低约20％时，SOL宽度加倍。在较大的等离子体电流下，E נ B剪切作用更强，并且对边缘湍流传输的抑制作用更大。当边缘区域中的相对密度波动水平的幂越大时，SOL宽度越大。结论是，边缘湍流传输对SOL宽度起着重要作用。这些实验结果可以为当前和将来的聚变设备提供更好的理解和对动力排放的控制。