Method for obtaining an output ion current

Details Method for obtaining an output ion current Method for obtaining an output ion current

2006-03-07

2006-03-07

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000, C250S42300F, C250S424000

Reexamination Certificate

active

07009175

ABSTRACT:
In a method for obtaining an output ion current substantially comprised of only a single ionic species, ions formed in the ionization of a source gas in an ionization region (A) and/or ions extracted from the ionization region (A) are allowed to react in a region (A, B, C), in which is located a source gas, until substantially only one or several source ionic species are present, which do not react with the source gas. To a reaction region (C) located outside of the ionization region (A) and in which ions of the one or several source ionic species are present, a reactant gas, differing from the source gas, is supplied, which reacts with the ions of the one or several source ionic species, and the ions of the one or several source ionic species are substantially converted into the single ionic species forming the output ion current.

REFERENCES:
patent: 6753523 (2004-06-01), Whitehouse et al.
patent: 2005/0056776 (2005-03-01), Willoughby et al.
patent: 001 637 (1997-08-01), None
patent: 403 214 (1997-12-01), None
patent: 406 206 (2000-03-01), None
patent: 0 000 865 (1979-03-01), None

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