Ion mobility spectrometer instrument and method of operating...

Details Ion mobility spectrometer instrument and method of operating... Ion mobility spectrometer instrument and method of operating...

2009-01-21

2010-11-23

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S282000, C250S288000, C250S287000

Reexamination Certificate

active

07838821

ABSTRACT:
An ion mobility spectrometer instrument has a drift tube that is partitioned into a plurality of cascaded drift tube segments. A number of electric field activation sources may each be coupled to one or more of the plurality of drift tube segments. A control circuit is configured to control operation of the number of electric field activation sources in a manner that applies switched electric fields at a specified switching rate to the drift tube segments to thereby produce at the ion outlet only ions having a predefined ion mobility or range of ion mobilities.

REFERENCES:
patent: 5280175 (1994-01-01), Karl
patent: 7388197 (2008-06-01), McLean et al.
patent: 2009/0101810 (2009-04-01), McLean et al.

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