Patent ID: 8698073
Filing Date: 2014-04-15
Classification: G01N

Abstract:
1. An ion collection device for an ion mobility spectrometer having drift electrodes which drift ions in the ion mobility spectrometer and a drift electrode power source for supplying power to the drift electrodes, the ion collection device comprising: an aperture grid for restraining influence of ion drift movement in a drift region on ion collection; a first electrode disposed at a downstream side of the aperture grid in an ion drift direction, the first electrode being mechanically and electrically coupled with the aperture grid; a second electrode disposed at a downstream side of the first electrode in the ion drift direction, a shield cover disposed at a downstream side of the second electrode in the ion drift direction, the shield cover being separated apart from the second electrode, wherein the drift electrode power source has a grounded output terminal which is coupled with the second electrode, an ion collection member for collecting ions, said ion collection member including an ion collection part, wherein a space is formed inside the first electrode, and the ion collection part of the ion collection member is disposed in the space formed inside the first electrode, and a first insulation member disposed between the first electrode and the second electrode, the ion collection member connecting with the first insulation member.