Ion thruster
The invention discloses an ion thruster which comprises an ionization chamber, a main cathode arranged in front of the ionization chamber, a screen grid and an acceleration grid, wherein the screen grid and the acceleration grid are sequentially arranged behind the ionization chamber from front to b...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses an ion thruster which comprises an ionization chamber, a main cathode arranged in front of the ionization chamber, a screen grid and an acceleration grid, wherein the screen grid and the acceleration grid are sequentially arranged behind the ionization chamber from front to back. A main cathode channel is formed in the main cathode, and an inlet channel is formed in the side, located on the main cathode, of the ionization chamber, so that propelling gas can be injected into the ionization chamber through the main cathode channel and the inlet channel; the main cathode is used for emitting electrons to the ionization chamber to collide with the propelling gas, so that the propelling gas is ionized into positive ions and electrons, and the gas in the ionization chamber is in a plasma state; at the moment, pulse voltage is applied to the acceleration grid, and when the voltage is positive, the electrons are accelerated from the ionization chamber and emitted out from holes of the screen g |
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