Effect of the Geometry of Cathode Microprotrusions on the Parameters of the Explosive Emission Processes
2020
This report presents results of a numerical simulation of the electrical explosion of a cathode microprotrusion initiated by explosive emission current. The microexplosion parameters (the pre-explosion time and the specific current action integral) have been estimated in relation to the geometry (current density) of the microprotrusion and the type (direct-current and high-frequency) voltage across the diode. The variations in the main parameters of the cathode material (temperature and density) during such a microexplosion are investigated for tungsten and copper cathodes.
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