Charged particle source

Details Charged particle source Charged particle source

1988-01-06

1990-05-08

Anderson, Bruce C.

Radiant energy

Ion generation

Field ionization type

31511181, H01J 3708

Patent

active

049241010

ABSTRACT:
A charged particle source for emitting a positive ion or electron by applying a positive or negative potential to a tip electrode covered with a liquid substance is disclosed in which mechanical vibration is applied to the tip electrode so that a favorable standing wave is formed in the liquid substance, to vary the shape of a charged-particle emitting portion of the liquid substance periodically, thereby changing the intensity of an emitted, charged-particle beam periodically, and thus a pulsed beam having a repetition rate up to the GHz band can be obtained without increasing the energy dispersion of the beam.

REFERENCES:
patent: 4570068 (1986-02-01), Sakairi et al.
patent: 4667100 (1987-05-01), Lagna
patent: 4680507 (1987-07-01), Uemura et al.
Advances in Electronics and Electron Physics, vol. XIII, 1960, pp. 83-95.

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