ION MOBILITY SPECTROMETER Russian patent published in 2011 - IPC H01J49/40 

FIELD: physics.

SUBSTANCE: ion mobility spectrometer has a flow-type ion-drift chamber, a repelling electrode and a collector, an ionisation source and an aperture grid, dynodes, a first gas volume, a second gas volume, a pump and a switching valve. The spectrometer also includes a first atomising jet and a second atomising jet, a third atomising jet and a fourth atomising jet. The first gas volume consists of a first filter for cleaning gas connected to a first receiver, and the second gas volume consists of a second filter for cleaning gas connected to a second receiver. The spectrometer can have a third filter connected to the switching valve and linked to the atmosphere.

EFFECT: low degree of contamination of the device with impurities, high reliability of identification, high sensitivity, resolution and reliability of operation of the spectrometer, and low power consumption.

4 cl, 4 dwg