ION MOBILITY SPECTROMETRE Russian patent published in 2010 - IPC H01J49/00 

FIELD: physics.

SUBSTANCE: ion mobility spectrometre has an ion formation chamber, an ion source, a drift tube with a collector and an aperture element which form an ejection region, an ejection electrode and an ion valve, a drift gas inlet into the drift region. The power system of the ion source has an ioniser housing with an axially symmetric shape. On the walls of the ioniser housing there are radially directed inlet devices and devices for ionising samples of the analysed substance. The point of intersection of the axes of inlet devices lies opposite the top of the aperture element which is made in form of convex wall with an ion inlet opening at its top. The collector is detachable. The aperture element is made in form of a hemisphere or cone.

EFFECT: increased selectivity, increased sensitivity, faster operation, possibility of working on different modes.

5 cl, 7 dwg