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Fig. 2. (Color online) Time-averaged electron density profiles with (a) the symmetric electrode and (b) a hole width of 1 mm, (c) a hole width of 2 mm, and (d) multi-holes with a hole width of 2 mm for the powered electrode on the top and the grounded bottom electrode.
New Phys.: Sae Mulli 2023;73:764~768