Ion collecting device for ion mobility spectrometer and ion mobility spectrometer
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United States of America Patent
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Apr 15, 2014
Grant Date -
Jul 14, 2011
app pub date -
Jun 28, 2010
filing date -
Jun 30, 2009
priority date (Note) -
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Abstract
The present invention provides an ion collection device for an ion mobility spectrometer and an ion mobility spectrometer. The ion collection device comprises: an aperture grid for restraining influence of ion drift movement in a drift region on ion collection; and a first electrode disposed at a downstream side of the aperture grid in an ion drift direction, the first electrode is mechanically and electrically coupled with the aperture grid. With the above configuration, the aperture grid and the first electrode are at the same electric potential, and form a focusing electrical field with an ion collection part. Therefore, ions entering the collection region will not scatter into a shield cover.
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