主权项 |
1. A Hall thruster comprising:
an acceleration channel extending along an axial direction having a first end arid a second end opposite to each other; an elongated anode extending along the axial direction positioned at said first end of said acceleration channel, said anode comprising working surfaces of two coaxial cylinders defining a cavity between said working surfaces and an exit for ions moving towards said acceleration channel predominantly along the axial direction with respect to said cylinders, wherein an electric field formed in said cavity has a radial component directed to prevent the ions in said cavity from attaining said working surfaces of said cylinders; a cathode-compensator, placed at said second end of said acceleration channel; a magnetic system generating a predominately radial magnetic field within said acceleration channel and a predominantly longitudinal magnetic field within said cavity of said anode; and a gas distributor, placed in said cavity of said anode between said working surfaces, opposite to said exit, and being electrically isolated from said anode, said cathode-compensator and said magnetic system. |