The invention discloses a
Hall effect ringlike
ion thruster and belongs to the technical field of
ion thrusters. The ringlike
ion thruster comprises a bottom positive pole, a ringlike grid
electrode,ringlike permanent magnets, insulating sleeves, a working medium
distributor set, a bias discharging negative pole and a neutralizer. Working medium gas enters a discharging chamber through bottom working medium distributors. Nozzles of the working medium distributors are oriented along the wall face so that the gas can be more uniform in a cavity. An axial
electric field is formed among the positive pole, the negative pole and the grid
electrode. A radial
magnetic field is formed by the inner ringlike permanent
magnet and the outer ringlike permanent
magnet, and an E*B orthogonal field is formed by the radial
magnetic field and the axial
electric field. Electrons sprayed out of the negative pole are subjected to Hall drift under the effect of the orthogonal field, and the working medium gas is ionized to generate plasmas. Then, the plasmas are extracted and accelerated by the ringlike grid
electrode and neutralized by electrons emitted by the neutralizer to generate thrust. The
ionization rate and input power of the thrust generated by the
Hall effect ringlike
ion thruster are far higher than those of a traditional
ion thruster, and performance of the
ion thruster can be remarkably improved.