Field-emission ion source and ion thruster apparatus comprising

Details Field-emission ion source and ion thruster apparatus comprising Field-emission ion source and ion thruster apparatus comprising

1979-03-30

1982-05-11

Garrett, Robert E.

Power plants

Reaction motor

Ion motor

313163, 31323141, 313328, F03H 100

Patent

active

043286674

ABSTRACT:
A field-emission ion source in which, under the influence of an electric field, ions are released from a metal or metal alloy present in an enclosed space in the liquid state. The ions are emitted from this space through a very narrow slit. This slit may be straight or curved. The field-emission ion source can be used in an ion thruster apparatus comprising an emitter module, an electrode system, and a power supply unit. A plurality of emitter modules can be combined to form an ion thruster apparatus having a greater ion current output. Instead of a liquid metal as the propellant, a metal in the solid phase can be supplied to the emitter module, which metal is melted in the emitter module.

REFERENCES:
patent: 2809314 (1957-10-01), Herb
patent: 3116433 (1963-12-01), Yeates
patent: 3157988 (1964-11-01), Schultz
patent: 3187179 (1965-06-01), Craig et al.
patent: 3233404 (1966-02-01), Huber et al.
patent: 3475636 (1969-10-01), Eckhardt
patent: 3579011 (1971-05-01), Hyman
patent: 4088919 (1978-05-01), Clampitt et al.

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