METHOD AND SYSTEM FOR VACUUM DRIVEN MASS SPECTROMETER INTERFACE WITH ADJUSTABLE RESOLUTION AND SELECTIVITY
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United States of America Patent
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Issued Date -
Nov 11, 2010
app pub date -
May 20, 2010
filing date -
May 30, 2008
priority date (Note) -
Abandoned
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Abstract
A mass spectrometer system and a method of operating same are provided. The system comprises a) an ion conduit for receiving ions; b) a boundary member defining a curtain gas chamber containing the ion conduit; c) a curtain gas supply for providing a curtain gas directed by the boundary member to an inlet of the ion conduit to provide a gas flow into the ion conduit, and a curtain gas outflow out of a curtain gas chamber inlet; d) a mass spectrometer at least partially sealed to, and in fluid communication with, the ion conduit for receiving the ions from the ion conduit; a vacuum chamber surrounding the mass spectrometer operable to draw the gas flow including the ions through the ion conduit and into the vacuum chamber; and, e) a gas outlet for drawing a gas outflow from the gas flow located between the ion conduit and the mass spectrometer to increase the gas flow rate through the ion conduit.
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