| US 7,488,953 B2 | ||
| Multimode ionization source | ||
| Steven M. Fischer, Hayward, Calif. (US); Darrell L. Gourley, San Francisco, Calif. (US); and James L. Bertsch, Palo Alto, Calif. (US) | ||
| Assigned to Agilent Technologies, Inc., Santa Clara, Calif. (US) | ||
| Filed on May 31, 2006, as Appl. No. 11/444,095. | ||
| Application 11/444095 is a continuation of application No. 10/640176, filed on Aug. 13, 2003, granted, now 7,078,681. | ||
| Application 10/640176 is a continuation in part of application No. 10/245987, filed on Sep. 18, 2002, granted, now 6,646,257. | ||
| Prior Publication US 2007/0023675 A1, Feb. 01, 2007 | ||
| Int. Cl. H01J 27/02 (2006.01) | ||
| U.S. Cl. 250—425 [250/281; 250/282; 250/285; 250/288; 250/423 P; 250/423 R] | 8 Claims |
| 1. A multimode ionization source, comprising:
(a) an electrospray ionization source for providing a charged aerosol;
(b) an inner chamber having a first opening adjacent to the electrospray ionization source for receiving the charged aerosol,
the inner chamber including an infixed emitter for drying the charged aerosol, a second opening and an exit situated downstream
from the first opening;
(c) an atmospheric pressure ionization source downstream from the electrospray ionization source and adjacent to the second
opening of the inner chamber for further ionizing said charged aerosol within the inner chamber; and
(d) a conduit adjacent to the exit of the inner chamber and having an orifice for receiving ions from the charged aerosol;
wherein said multimode ion source is adapted so that said ions produced by said electrospray ionization source and ions produced
by said atmospheric pressure ionization source exit said multimode ion source via said conduit.
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