Spatial focusing ion gate assembly and spatial focusing ion mobility spectrometer

摘要

Provided is a spatial focusing ion mobility tube, including an ionzation source, an ion gate, a grid mesh and a faraday disc. A focusing grid mesh parallel to the ion gate is provided at one side of the ion gate away from the ionization source, and the ion gate and the focusing grid mesh combine into a spatial focusing ion gate assembly which controls the flight of the ions. The mobility tube employs a traditional design and changes the ion gate portion to one or more spatial focusing ion gate assemblies. The spatial focusing assembly can realize the injection function of the ion gate and produce the spatial compression focusing of ions.

主权项

1. An ion mobility tube, comprising:
a spatial focusing ion gate assembly; an ionization source; and a faraday plate, wherein the spatial focusing ion gate assembly comprises an ion gate and a focusing grid, wherein the focusing grid is adjacent to and parallel to the ion gate, wherein the spatial focusing ion gate assembly is disposed in the ion mobility tube between the ionization source and the faraday plate so that a drift region of the ion mobility tube is located between the focusing grid and the faraday plate, and wherein the ion gate is a Bradbury-Nielsen ion gate.