Steven T Colby

US Patent:

7196525, Mar 27, 2007

Filed:

May 6, 2006

Appl. No.:

11/382017

Inventors:

O. David Sparkman - Antioch CA, US
Steven M. Colby - Palo Alto CA, US

International Classification:

G01N 27/62

US Classification:

324464

Abstract:

Systems and methods of generating ions at atmospheric pressure are presented. These systems and methods include spatially dependent analysis of a sample using an effusive ionization source. Systems and methods of isolating samples at atmospheric pressure are presented. These systems and methods include using a barrier to prevent metastables or electrons from an effusive ion source from reaching a sample unless the sample is in an analysis position. Systems and methods of using metastables in collisionally induced dissociation are presented.