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RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR

United States Patent Application

20140138538
A1
View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A distance-of-flight mass spectrometer (DOFMS) includes an ion source, a field-free region, an extraction region in which ions are accelerated, and a spatially-selective detector for spatially selectively detecting ions extracted by the extraction region. A method for operating a distance-of-flight mass spectrometer DOFMS comprises controlling a detection time in such a way as to permit ions with progressively greater mass-to-charge (m/z) ratios to enter the extraction region of the DOFMS at positions which will permit the ions with progressively greater m/z ratios to enter the detector of the DOFMS, generating a component mass spectrum at each selected value of detection time, and then assembling a composite mass spectrum by shifting the distance-of-flight axis of each component mass spectrum by a distance corresponding to the change in detection time.
Hieftje, Gary M. (Bloomington, IN), Enke, Christie George (Placitas, MN), Graham, Alexander W. (Bloomington, IN), Ray, Steven J. (Bloomington, IN), Dennis, Elise (Bloomington, IN), Barinaga, Charles J. (Richland, WA), Koppenaal, David W. (Richland, WA)
BATTELLE MEMORIAL INSTITUTE (Indianapolis IN), INDIANA UNIVERSITY RESEARCH AND TECHNOLOGY CORPORATION
14/ 110,998
April 16, 2012
GOVERNMENT RIGHTS [0002] This invention was made with government support under DE-AC05-76RL01830 and DE-FG02-98ER14890 awarded by the Department of Energy and CHE-0822114 awarded by the National Science Foundation. The U.S. Government has certain rights in the invention.