ELECTRON INJECTOR Russian patent published in 1994 - IPC

FIELD: high-power electronics. SUBSTANCE: electron injector has thermal cathode 1, axisymmetric focusing near-cathode electrode 2, hollow anode 3 in the form of toroidal body of revolution with built-in axisymmetric plasma source with conical limiting surface 10, near-anode electrode 4 in the form of truncated cone with ring slot 14 at which output hollow axisymmetric ion beam 15 is formed which is accelerated in gap and is uniformly deposited on emitting surface of cathode and gaseous-discharge source 6 of plasma including ring thermal cathode 9, screen electrode 8 and inner toroidal surface of hollow anode 3. Power supply circuit involves: high-voltage power supply source 23, thyristor regulator 24, rectifier 16 of gaseous-discharge source 6 of plasma, regulator 17. EFFECT: increased peak power. 4 cl, 1 dwg