FIELD: generation of plasma and broad heavy-current ion beams. SUBSTANCE: emitter has glow discharge electrode system incorporating hollow cathode made in the form of cone with emission window at end; rod-type anode disposed on system axis; and solenoid arranged coaxially to cathode on its external side. Gas-discharge plasma generated in device provides for production of plasma ion emitter distinguished by high uniformity of emission on large surface area. Effectiveness of ion extraction from discharge plasma grows up to 20% of discharge current. EFFECT: enhanced power efficiency of ion source. 1 cl, 1 dwg
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