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Apparatus for reduction of selected ion intensities in confined ion beams

United States Patent

July 10, 2001
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
An apparatus for producing an ion beam having an increased proportion of analyte ions compared to carrier gas ions is disclosed. Specifically, the apparatus has an ion trap or a collision cell containing a reagent gas wherein the reagent gas accepts charge from the analyte ions thereby selectively neutralizing the carrier gas ions. Also disclosed is the collision cell as employed in various locations within analytical instruments including an inductively coupled plasma mass spectrometer.
Eiden; Gregory C. (Richland, WA), Barinaga; Charles J. (Richland, WA), Koppenaal; David W. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
09/ 097,995
June 15, 1998
This invention was made with Government support under Contract DE-AC06-76RLO 1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.