H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 49/06 (2006.01) H01J 49/26 (2006.01) H01J 49/42 (2006.01)
Patent
CA 2636821
An ion guide includes multiple stages. An electric filed within each stage guides ions along a guide axis. Within each stage, amplitude and frequency, and resolving potential of the electric field may be independently varied. The geometry of the rods maintains a similarly shaped field from stage to stage, allowing efficient guidance of the ions along the axis. In particular, each rod segment of the ith of stage has a cross sectional radius ri, and a central axis located a distance Ri+ri from the guide axis. The ratio ri/RIis substantially constant along the guide axis, thereby preserving the shape of the field.
Un guide d'ions comprend plusieurs étages. Un champ électrique situé dans chaque étage guide les ions sur un axe du guide. Dans chaque étage, l'amplitude et la fréquence ainsi que le potentiel de résolution du champ électrique peuvent être variés indépendamment. La géométrie des tiges maintient un champ de forme similaire d'un étage à l'autre, ce qui permet de guider efficacement les ions sur l'axe. En outre, chaque segment de tige du Itièmeétage présente un rayon en section ri, et un axe central situé à une distance Ri+ri de l'axe du guide. Le rapport ri/RIest sensiblement constant le long de l'axe du guide, ce qui maintient la forme du champ.
Cousins Lisa
Javahery Gholamreza
Jolliffe Charles
Tomski Ilia
Ionics Mass Spectrometry Group Inc.
Smart & Biggar
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