Abstract
The results of investigation of low-pressure glow discharge with the hollow cathode for the conditions when the cathode cavity depth is comparable with cavity diameter are presented. Data on current distribution over the hollow-cathode surface using sectioned electrodes are obtained and the length of the cathode sheath is measured. It is shown that for the regime of suppressed glow discharge the main fraction of the total discharge current closes to the nearest to the anode cathode section. For the regime of ordinary glow discharge, when the cavity depth is equal to cavity diameter, discharge current over the cathode surface is distributed uniformly. The estimations of the discharge parameters and the values of the cathode sheath using the model of hollow-cathode discharge sustainment were done. Model agrees well with the experimental data.
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