Calculation of unipolar space charge current and pressure at highpotential

摘要

The nonohmic current that can occur in solids, liquids and gaseswhen unipolar ions are in a region of high potential is addressed. Ionsin an electric field gain momentum, and this momentum is transferred toneutral molecules through collisions. The coupling between the electricfield, the ions and the neutrals gives rise to the electric or coronawind. A simple analytic equation is developed which describes thenonohmic behavior of electrical devices at high potential due to thiscoupling. The implications of this equation for the measurement ofsurface resistivity and in understanding corona chargers are discussed.The equation is then used to show that the corona wind pressure islinearly related to the electrical current