Enhanced gradient multipole collision cell for higher duty...

Details Enhanced gradient multipole collision cell for higher duty... Enhanced gradient multipole collision cell for higher duty...

2007-12-25

2007-12-25

Berman, Jack I. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S292000, C250S288000, C250S287000, C250S281000

Reexamination Certificate

active

11224080

ABSTRACT:
A method for processing ions in mass spectrometry is provided. The method provides for processing ions in a ion processing cell having elongated segmented rods, a circuit for applying RF voltages and a circuit for applying DC voltage selectively to the segments of the segmented rods. The method comprises applying an RF field to the elongated volume, applying DC voltage selectively to the segments to form a plurality of potential regions having discrete potentials; providing analyte ions to a first potential region and processing at least a portion of the analytes in the first potential region. In one embodiment, the potential region is a potential well.

REFERENCES:
patent: 5847386 (1998-12-01), Thomson et al.
patent: 6833544 (2004-12-01), Campbell et al.
patent: 7166836 (2007-01-01), Russ et al.
patent: 2002/0092980 (2002-07-01), Park

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