Abstract
In the paper, the results of the study of space structure and temporal dynamics of a hybrid discharge matching a high-current reflective discharge with vacuum arcs initiated by surface dielectric flashover at the discharge supplying voltages up to 9 kV and working gas (argon) pressures of 0.1 – 1 mTorr are presented. The possibility of the formation of plasma anode with the density increased at the periphery including the use of an auxiliary screen has been demonstrated. The measurements of energy density distribution of a low-energy, high-current electron beam formed in an electron gun with explosive-emission cathode and plasma anode based on this hybrid discharge are also presented. The results obtained are comparable with those achieved with the use of magnetic field concentrators. Since the use of concentrators is not always possible, so the suggested method of the beam uniformity improvement looks promising.
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