Mass spectrometer
AssigneeMicromass UK Limited
InventorsRobert Harold Bateman, Kevin Giles, Steven Derek Pringle, Jason Lee Woldgoose
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Abstract
A mass spectrometer is disclosed comprising an ion mobility spectrometer or separator and an ion guide arranged downstream of the ion mobility spectrometer or separator. A plurality of axial potential wells are created in the ion guide so that ions received from the ion mobility spectrometer or separator become confined in separate axial potential wells. The potential wells maintain the fidelity and/or composition of ions received from the ion mobility spectrometer or separator. The potential wells are translated along the length of the ion guide.
Claims16
A mass spectrometer comprising:
- an ion mobility separator;
- an ion guide comprising a stack of electrodes arranged downstream of said ion mobility separator;
- a voltage source for applying one or more voltages to the stack of electrodes for generating an axial potential well and translating the axial potential well along the ion guide;
- a mass filter or a further ion guide;
- a fragmentation or collision cell for fragmenting ions;
- and
- a TOF mass analyser orthogonally disposed downstream of the ion guide.
A method of mass spectrometry employing mass spectrometry including an ion mobility separator, an ion guide including a stack of electrodes arranged downstream of said ion mobility separator, a voltage source for applying one or more voltages to the stack of electrodes for generating an axial potential well and translating the axial potential well along the ion guide, a mass filter or a further ion guide, a fragmentation or collision cell for fragmenting ions, and a TOF mass analyser orthogonally disposed downstream of the ion guide comprising:
- applying one or more voltages to the stack of electrodes to generate an axial potential well, and translate the axial potential well along the ion guide.
Dependencies are inferred from the claim text.