Abstract
The experimental results on properties of a strongly overvoltage open pulsing discharge being formed in a short gap (3 mm) filled with deuterium at low pressure (P=0.5-2 Torr) are presented. This discharge generates a high-current pulsed-periodical e-beam of 35 mm in diameter with a frequency up to 1.5 kHz and energy up to 25 keV. The repetition frequency influence on the reproducibility of e-beam generation was studied. It was found out that the high-current cathode spots being formed after the transition of the high-voltage regime into low-voltage regime restrict the maximum repetition frequency of a strongly overvoltage open pulsing discharge.
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