Quadrupole mass spectrometer with enhanced sensitivity and mass resolving power
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United States of America Patent
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Sep 23, 2014
Grant Date -
Aug 14, 2014
app pub date -
Apr 18, 2014
filing date -
Mar 2, 2010
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Abstract
A novel method and mass spectrometer apparatus is introduced to spatially and temporally resolve images of one or more ion exit patterns of a multipole instrument. In particular, the methods and structures of the present invention measures the ion current as a function of time and spatial displacement in the beam cross-section of a quadrupole mass filter via an arrayed detector. The linearity of the detected quadrupole ion current in combination with it reproducible spatial-temporal structure enables the deconvolution of the contributions of signals from individual ion species in complex mixtures where both sensitivity and mass resolving power are essential.
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