Linear quadrupoles with added hexapole fields and method of building and operating same
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United States of America Patent
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Jun 2, 2009
Grant Date -
Nov 29, 2007
app pub date -
Feb 7, 2007
filing date -
Feb 7, 2006
priority date (Note) -
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Abstract
A mass spectrometer and a method of operating and building same is provided in which a hexapole component is deliberately added to a substantially quadrupole field. This can result in unwanted octopole and dipole fields also being added to the substantially quadrupole field. Modifications to the mass spectrometer as well as ways of operating the mass spectrometer are provided for dealing with the unwanted octopole and dipole fields.
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