ION GUN Russian patent published in 1999 - IPC

FIELD: production of high-power pulsed ion beams. SUBSTANCE: gun cathode is made in the form of turn with ion-beam outlet holes. Anode placed inside cathode has plasma-forming sections with rounded-off edges placed so that they face cathode holes. Anode and cathode surfaces on ion beam outlet side are made in the form of part of coaxial cylindrical surfaces. Cathode is built up of two plates. Cathode plate with beam-outlet holes is connected on both ends to ground through pin strips. Second cathode plate is connected on both ends to leads of two unlike-polarity current supplies also by means of pin strips opposing those of first plate. Second leads of current supplies are connected to gun case; pins are spaced apart through distance shorter than anode-to-cathode gap. EFFECT: reduced cross magnetic field in beyond-cathode space; provision for producing high-power converging ion beam. 2 dwg