Gas flow structure during submillimeter the arc discharge motion in transverse magnetic field

The paper presents the results of experimental studies of the structure of the near-wall flow arising when the plasma of a submillimeter arc discharge moves in magnetic field in stationary gas near the surface. Due to high accuracy of the process synchronization, we succeeded in obtaining the flow-velocity vector fields by using the adaptive PIV method with averaging them over a series of images. The main stages of the flow evolution at different magnetic field magnitudes are demonstrated for the first time; those stages are characterized by a stable dynamics of the homogeneous jet transformation into a complex vortex structure.