Dependence on Charging Voltages of Radiated Electric Fields caused by Collision ESD with Low Voltages between Spherical Electrodes

Abstract

Measurements of radiated electric fields caused by collision electrostatic discharges (ESDs) between charged spherical electrodes with a diameter of 30 mm were previously conducted at charging voltages from 300 V to 600 V by using an optical electric field probe. To reveal that the radiated electric field peaks measured at a distance of 100 mm from the spark point increase with the charging voltages, using an image dipole model combined with Rompe-Weizel spark resistance formula for charged spherical electrodes, we calculate radiated electric fields from the spark lengths that are estimated by the measured electric field peaks when the collision ESD occurs.