Periodic field focusing ion mobility spectrometer
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United States of America Patent
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Oct 28, 2003
Grant Date -
Oct 25, 2001
app pub date -
Feb 28, 2001
filing date -
Feb 29, 2000
priority date (Note) -
Expired
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Abstract
This invention is generally in the field of improved ion mobility spectrometry. The improvement lies in the use of periodic focusing electric fields that minimize the spatial spread of the migrating ions by keeping them in a tight radius about the axis of travel. The resulting enhancement in sensitivity is accomplished without a concomitant loss in resolution as would normally be expected when non-linear fields are used.
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