Orthogonal acceleration TOF with ion guide mode
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United States of America Patent
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Sep 8, 2015
Grant Date -
Sep 18, 2014
app pub date -
Mar 13, 2014
filing date -
Mar 14, 2013
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Abstract
Mass spectrometry systems include an electronic controller and a time-of-flight mass analyzer in communication with the electronic controller. The time-of-flight mass analyzer includes a pulsing region defining a channel that extends along an axis. The pulsing region includes: a first electrode extending along the axis, the first electrode defining one or more apertures; a second electrode extending along the axis, the first and second electrodes being positioned on opposing sides of the axis in a first direction perpendicular to the axis. The electronic controller is programmed to apply a first set of voltages to the electrodes to constrain a motion of ions propagating along the axis in a radial direction relative to the axis, and apply a second set of voltages to the electrodes to accelerate the ions out of the pulsing region through the one or more apertures.
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