Abstract
Graphite cathode surface erosion in the pulseless negative corona discharge in air is studied in the point-plane electrode configuration at a pressure of 0.3–1 atm. The formation of erosion craters in the form of orderly arranged erosion cells shaped as regular polygons on the cathode tip is detected. The cell size coincideswith the negative glow diameter of the discharge torch. The formation of orderly arranged cells is associated with features of the discharge torch dynamics in the pulseless discharge type.
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