Abstract
A model of formation of a non-self-sustained discharge in plasma in electron beam welding is proposed. The electron concentration and electron energy in the plasma above the zone of the effect of the electron beam are calculated by solving the convection–diffusion equations for the density and mean electron energy. Numerical calculations in the construction of the model are carried out using a package of applied software Comsol 4.3, the Plasma Module and the extension DC discharge. The model can be used to calculate the plasma parameters both above the welding zone and directly in the penetration channel.
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