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    COUNTERFLOW UNIFORM-FIELD ION MOBILITY SPECTROMETER
    4.
    发明公开
    COUNTERFLOW UNIFORM-FIELD ION MOBILITY SPECTROMETER 审中-实审

    公开(公告)号：EP4404239A2

    公开(公告)日：2024-07-24

    申请号：EP24179261.3

    申请日：2021-03-30

    申请人： Thermo Finnigan LLC

    发明人： KOVTOUN, Viatcheslav V.

    IPC分类号： H01J49/00

    CPC分类号： G01N27/622 ,  H01J49/004

    摘要： An ion mobility device includes a plurality of electrodes and a current source. The plurality of electrodes arranged along an axis extending from a first end to a second end. The plurality of electrodes configured to receive a gas flow at the second end and provide for an expansion of the gas flow from the second end to the first end such that a first gas velocity at the second end is greater than a second gas velocity at the first end. The current source is configured to apply a first potential to the plurality of electrodes to generate a first electric field during a trapping and equilibration time period; and apply a second potential to the electrodes during an ejection time period to generate a second electric field, the second electric field being greater than the first electric field.

    APPARATUS AND METHOD FOR ION SEPARATION
    5.
    发明公开
    APPARATUS AND METHOD FOR ION SEPARATION 审中-公开

    公开(公告)号：EP4394844A1

    公开(公告)日：2024-07-03

    申请号：EP23215747.9

    申请日：2023-12-12

    申请人： Thermo Finnigan LLC

    发明人： SILVEIRA, Joshua ,  SENKO, Michael ,  NIETO RAMOS, Pablo

    IPC分类号： H01J49/06 ,  H01J49/42

    CPC分类号： H01J49/062 ,  H01J49/4255 ,  H01J49/429

    摘要： Disclosed herein are systems and methods for sorting ions including a group of multipole electrodes configured to form an ion trap, and an ion guide adjacent to, and operably coupled to the group of multipole electrodes. Using a radio frequency (RF) or Direct Current (CD) power supply device the system can apply an RF voltage to the group of multipole electrodes thereby creating a pseudo-potential barrier. A DC gradient voltage may then be applied creating an axial field in opposition to the pseudo-potential barrier. As the DC voltage is raised and/or the RF voltage is lowered, one or more ions will be eluted through the barrier.