Photoionizer

Details Photoionizer Photoionizer

1981-02-25

1983-03-22

Anderson, Bruce C.

Radiant energy

Ion generation

Field ionization type

H01J 3934

Patent

active

043777490

ABSTRACT:
There is provided a photoionizer which includes a light source comprising a hollow torus, an ultraviolet transmitting window substantially surrounding a passage through the torus, a gas filling within the torus, and means for creating an electrical discharge within said torus. The photoionizer further includes an electrode means within said passage through said torus for collecting, or extracting, the ions produced by the said light source striking a gas within said passage, means for passing a preselected gas sample through said passage containing said electrode means, and means connected to said electrode means for measuring the ions collected by said electrode means resulting from the interaction between said light source and said gas sample or extracting means able to project a beam of ions from the ionization region or from an ion image outside the ionization region.

REFERENCES:
patent: 3476968 (1969-11-01), Omura
patent: 3478204 (1969-11-01), Brubaker et al.
patent: 4000420 (1976-12-01), Harris

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