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Abstract
We present the results of an investigation of the gas-metal plasma formed by electron-beam evaporation with simultaneous ionization of a copper target in a rare gas (helium) atmosphere at a pressure of 2–12 Pa. It has been found that, in addition to the expected growth of the beam-plasma density, there is a non-monotonic change (growth followed by a decrease) in the electron temperature with the increasing evaporation rate. The indicated temperature behavior of beam-plasma electrons can be explained by a numerical balance model that describes the generation of the beam-plasma from the gas and metal components having different ionization potentials.
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