Field Asymmetric Ion Mobility Spectrometer

The present invention discloses a non symmetrical field ion mobility spectrometer, comprising: an ionization source for generating ions; electrode plate; a plurality of wire electrode, the wire electrode and the plurality of the electrode plate and spaced apart a relatively Interstitial is provided between said electrode plates and said plurality of wire electrode high voltage electric field, thereby forming an ion drift region, the ion collector wire is not used by the ion transfer region; a collector electrode provided on the said rear end region of the ion mobility, for collecting ion through the ion mobility regions. The field asymmetrical possible to improve the accuracy of the ion mobility spectrometer ion peak bit resolution and scan time and reduce the types of compensation voltage DC voltage, thereby improving the ion detection efficiency.