Discharge chamber of a ring-type ion thruster

Abstract

The present invention discloses a ring-shaped ion thruster discharge chamber. By using the ring-shaped ion thruster discharge chamber, higher thrust and higher specific impulse can be realized. The ring-shaped ion thruster discharge chamber comprises a ring-shaped anode group, two cathodes, a ring-shaped magnetic pole group and a gas distribution ring, wherein the inner ring magnetic pole group of the ring-shaped magnetic pole group is at the inner side of the inner ring anode of the ring-shaped anode group, an outer ring magnetic pole group is at the outer side of an outer ring anode, a bottom magnetic pole group under the bottom of a bottom anode electrode, the gas distribution ring comprises an inner ring gas distribution ring and an outer ring gas distribution ring, and the two cathodes are symmetrically distributed between the inner ring gas distribution ring and the outer ring gas distribution ring. The area of an anode which adsorbs electrons is effectively increased, thus a thruster can work in higher discharge current, the ionization region of the discharge chamber is increased, thus the discharge chamber plasma uniformity and the working medium utilization rate are significantly improved, the discharge loss is reduced, thus the lead-out beam flow density is greatly raised, and the performance and life of the thruster are effectively improved.

Description

technical field [0001] The invention relates to the technical field of ion thrusters, in particular to a ring-type ion thruster discharge chamber. Background technique [0002] The discharge chamber of the ion thruster is the place where plasma is generated by ionization. The structure of the discharge chamber has an extremely important influence on the discharge efficiency, working fluid utilization, plasma density and distribution uniformity, etc., thus determining the thruster performance and life. At present, the discharge chamber of the traditional ion thruster is a single-tube structure, the ionization area is limited, and the distribution of the plasma is not uniform, which limits the further improvement of the thrust and specific impulse of the ion thruster. In order to meet the needs of spacecraft for high-power and long-life ion thrusters, a ring-shaped ion thruster discharge chamber structure is proposed. Contents of the invention [0003] In view of this, the...

AI Technical Summary

Problems solved by technology

At present, the discharge chamber of the traditional ion thruster is a single cylinder structure, the ionization area is limited, and the distribution of the plasma is not uniform, which limits the further improvement of the thrust and specific impulse of the ion thruster

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