Ion guiding device

摘要

An ion guiding device is disclosed comprising a first ion guide which is conjoined with a second ion guide. Ions are urged across a radial pseudo-potential barrier which separates the two guiding regions by a DC potential gradient. Ions may be transferred from an ion guide which has a relatively large cross-sectional profile to an ion guide which has a relatively small cross-sectional profile in order to improve the subsequent ion confinement of the ions.

主权项

1. An ion guiding device comprising:
two conjoined ion guides including a first ion guide and a second ion guide wherein a first ion guiding path is formed along said first ion guide and a second ion guiding path is formed along or within said second ion guide; and a device configured to transfer ions radially from said first ion guiding path into said second ion guiding path; wherein said first ion guide comprises a stacked plate ion guide comprising a plurality of plate electrodes arranged generally in a plane in which ions travel in use.