Mass spectrometry for gas analysis with a one-stage charged particle deflector lens between a charged particle source and a charged particle analyzer both offset from a central axis of the deflector lens
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United States of America Patent
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Aug 5, 2014
Grant Date -
Dec 13, 2012
app pub date -
Jun 8, 2011
filing date -
Jun 8, 2011
priority date (Note) -
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Abstract
Apparatus, methods and systems are provided to inhibit a sightline from a charged particle source to an analyzer and for changing a baseline offset of an output spectrum of an analyzer. A supply of charged particles is directed through a hollow body of a deflector lens that is positioned relative to a charged particle source and an analyzer. A flow path along a preferred flow path through a deflector lens permits passage of the ions from the source to the detector while inhibiting a sightline from the detector to the source in a direction parallel to the central longitudinal axis of the deflector lens.
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