A two-dimensional computer model of glow discharge is given, which takes into account the heating of ambient gas and the external electric circuit. The structure of a glow discharge in molecular nitrogen is investigated numerically in the pressure range from 1 to 20 torr at an electric field intensity of up to 4 kV/cm. The regularities of heating a gas are investigated at different pressures and electric field intensities. It is demonstrated that, at a pressure p = 1 torr, a glow discharge burning in the mode of normal density of current assumes a toroidal shape.
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