RADIO FREQUENCY (RF) ION GUIDE FOR IMPROVED PERFORMANCE IN MASS SPECTROMETERS AT HIGH PRESSURE

摘要

Ion guides (200) for use in mass spectrometiy (MS) systems are described. The ion guides (200) are configured to provide a reflective electrodynamic field and a direct current (I or static) electric field to provide ion beams that are more spatially confined with a comparatively large mass range. Some ion guides (200) are provided between the ion source (101) and the first stage vacuum chamber (805) of the MS system (100).