Ion mobility spectrometer

Details Ion mobility spectrometer Ion mobility spectrometer

G - Physics

01

N

G01N 27/64 (2006.01)

Patent

CA 2325726

In order to form an ionization and/or drift area, the ion mobility spectrometer (IMS) has two opposing wall elements (1, 2) which are joined to each other by a spacer and provided with planar, parallel gas conducting surfaces that have opposing conductor structures (4) which produce a drift field (E-field). The ratio between the distance (d) separating the gas conducting wall surfaces and the field-generating width (b) of the conductor structure perpendicular to the direction of drift (x) is less than 1/2 and preferably 1/3 - 1/10.

L'invention concerne un spectromètre de mobilité ionique (IMS). Aux fins de formation d'une zone d'ionisation et/ou de dérive, ce spectromètre présente deux éléments parois (1, 2) opposés reliés par au moins une pièce d'écartement et dotés de surfaces qui sont plates, parallèles et conductrices de gaz et qui sont pourvues de structures de guidage (4) opposées destinées à la production d'un champ de dérive (Champ E). Le rapport entre la distance (d) des surfaces conductrices de gaz et la largeur génératrice de champ (b) de la structure conductrice (4) perpendiculaire au sens de dérive (x) est inférieur à 1/2 et, de préférence compris entre 1/3 et 1/10.

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