Abstract
A dependence of total near electrode voltage drops for high-current high-pressure discharges versus current rise rate into discharge in a range of 109–1012 A/s at initial gas pressure up to 200 MPa is presented. A new technique for the near-electrode voltage drops determination is proposed at conditions of the fast energy input. The technique is based on measuring the characteristics of a shock wave detaching from the discharge channel. Total near electrode voltage drops were increased with the current rise rates from around two hundreds to approximately ten thousand volts.
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