PLASMA ION EMITTER Russian patent published in 2000 - IPC

FIELD: generation of plasma and ion beams with large cross-section. SUBSTANCE: plasma ion emitter has hollow anode, hollow cathode and shield electrode. Diaphragm with central hole connected to cathode is installed between anode and cathode. Solenoid is mounted outside of electron system uniaxially to it. Current forming magnetic field in electrode system is passed through solenoid. Gas is injected into cathode space. Discharge is initiated between anode and cathode with supply of voltage and anode space is filled with plasma from which ions are selected through holes in shield electrode. Gas-discharge plasma generated in proposed emitter displays high spatial uniformity which ensures formation of wide homogeneous ion beams with small angular divergence with maintenance of high gas economical and energy efficiency of emitter. EFFECT: high gas economical and energy efficiency of device. 1 dwg