AN ELECTRON IMPACT IONIZATION WITHIN RADIO FREQUENCY CONFINEMENT FIELDS

    公开(公告)号:US20240258093A1

    公开(公告)日:2024-08-01

    申请号:US18578707

    申请日:2022-07-11

    CPC classification number: H01J49/147 G01N30/7206 H01J49/063 H01J49/067

    Abstract: The present system is a filament and an ion guide configuration. The ion source and an ion guide are combined in one system to create a fast release of ions, with increased efficiency of ion transport. The present device is a high-efficiency ion source operating at very low up to a few Torr pressure. Ions generated from the source immediately introduced into or created in an ion guide. The ions are introduced in or around the zero field lines of the RF field. Therefore, they will be trapped under the influence of the RF field there and can be transported to the next region of the mass spectrometer device. One method of transferring ions is by using ion-guides. Multipole ion guides have efficiently transferred ions through a vacuum or partial vacuum into mass analyzers. In particular, multipole ion guides have been configured to transport ions from a higher pressure region of a mass spectrometer to the lower pressure and then vacuum where the analyzer is operational.

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