Relative field gradient at the edge of an electrode in a 4-electrode system

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In this paper, relative electric field gradient at the edge of an electrode in a 4-electrode system is evaluated by the Schwarz-Christoffel (S-C) transformation. Several cases for different spacings between the electrodes and with different potentials are analyzed and results presented in the form of curves. The Monte Carlo technique was used to evaluate the integration constant, and results show that the field gradient is relatively high if the edge lies within a narrow range which should be avoided if high stresses are to be eliminated.