ION GUIDE COMPRISING DC ELECTRODES

Abstract: an ion guide comprises an entrance for admission of ions into the ion guide, wherein the admitted ions are directed along a first axis. the ion guide also comprises a confinement device comprising an array of radio frequency (rf) electrodes formed along a first surface and configured to provide an rf field for confinement of the admitted ions. the ion guide also comprises a first direct current (dc) electrode configured to receive a dc potential and thereby provide a force on the admitted ions having a component in a second axis that is perpendicular to the first axis. the first dc electrode has a surface that is oblique to the first and second axes.

Inventor(s): Hamish Stewart

CPC Classification: H01J49/062 (ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps ; arc lamps with consumable electrodes ; particle accelerators ))

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