The Charles Stark Draper Laboratory, Inc.

Sionex Corporation

Dh Technologies Development Pte. Ltd.

Kenneth A Markoski

Erkinjon G Nazarov

Raanan A Miller

David B Wheeler

Francy Lorena Sinatra

Timothy A Postlethwaite

Spiros Z Manolakos

Clayton J Morris, Ii

A non-radioactive plasma ion source device includes at least four planar electrodes that define at least three chambers, including a discharger chamber and at least two additional chambers aligned along a major longitudinal axis of the housing. A discharger ionizes at least one of a transport gas and a discharge gas to form ions in the discharger chamber that are directed by a homogeneous electric field generated by the planar electrodes toward an analyte gas outlet. Ionized species of at least one of the transport gas and the discharge gas that are not entrained by a counterflow gas stream are discharged from the discharger chamber to form a stream of ionized particles that ionize a sample gas and thereby form a stream of ionized analyte particles of the same polarity. The ionized analyte particles are entrained with the stream of ionized particles and pass through an analyte gas outlet to an analyzer.

Non-radioactive, capacitive discharge plasma ion source and method

A compact integrated ion mobility based analysis system includes at least one gas chromatograph (GC) column that receives a sample and elutes constituents of the sample where each of the eluted constituents are temporally separated from each other The system also includes at least one ion mobility based sample analyzer that analyzes the eluted constituents based on their ion mobility characteristics. The system further includes a controller that selectively adjusts the temperature within at least one GC column over a period of time and selectively adjusts the temperature within at least one ion mobility based sample analyzer over a period of time.

Compact gas chromatography and ion mobility based sample analysis systems, methods, and devices

Growing community of inventors

Westford, MA, United States of America

Kenneth A Markoski