“…Plasma blob has a filamentary structure along the magnetic field line and has a higher density than the SOL plasma. Interestingly, the cross-filed plasma transport, which could be associated with plasma blob-like structure, was found to be enhanced in the detached plasma condition in linear plasma devices [4][5][6], helical devices [7], and tokamaks [8,9]. In the linear plasma device NAGDIS-II (NAGoya DIvertor plasma Simulator II), fast framing camera observations have revealed that a spiral structure ejected from the plasma column was rotated in E × B direction in the peripheral region of the plasma column, where the electric field was in the radial direction [4,10].…”