Systems and methods for multipole operation
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United States of America Patent
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Jul 17, 2018
Grant Date -
Apr 6, 2017
app pub date -
Dec 19, 2016
filing date -
Sep 25, 2015
priority date (Note) -
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Abstract
A method for identifying components of a sample includes providing a sample to an ion source and generating a plurality of ions from constituent components of the sample, applying a first RF waveform at a first RF amplitude to an ion trap with field resonances while directing the plurality of ions into the ion trap, and applying a second RF waveform at a second RF amplitude to the ion trap while focusing the plurality of ions towards the center of the ion trap along the longitudinal axis. The method further includes ejecting the plurality of ions from the ion trap into a mass analyzer, and using the mass analyzer to determine the mass-to-charge ratio of the ions.
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