Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2007-12-18
2007-12-18
Nguyen, Kiet T. (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
Reexamination Certificate
active
11290187
ABSTRACT:
An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.
REFERENCES:
patent: 7034291 (2006-04-01), Fischer et al.
Bertsch James L.
Cormia Patricia H.
Fischer Steven M.
Gourley Darrell L.
Hanold Karl
Agilent Technologie,s Inc.
Nguyen Kiet T.
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