Electron-bombardment ion sources

Details Electron-bombardment ion sources Electron-bombardment ion sources

1975-01-27

1976-05-11

Demeo, Palmer C.

Electric lamp and discharge devices: systems

Discharge device load with fluent material supply to the...

Electron or ion source

60202, 313362, F03H 500, H05H 100

Patent

active

039566668

ABSTRACT:
An electron-bombardment ion source includes a chamber into which a propellant is introduced. The propellant is ionized by means of electrons drawn toward an anode from a cathode. At one end of the chamber is an apertured screen followed by an aligned apertured grid. The grid is maintained at a potential that accelerates the ions out of the chamber through the screen and the grid and past a space-charge-neutralizing cathode. A resistor is connected between the grid and the neutralizing cathode in order to maintain the latter at a positive potential relative to the potential on the grid. A system ground preferably is connected to the junction between the resistor and the neutralizing cathode but, alternatively, may be connected between the grid and the resistor.

REFERENCES:
patent: 3156090 (1964-11-01), Kaufman
patent: 3697793 (1972-10-01), King

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