Orthogonal-flow ion trap array
AssigneeThermo Finnigan LLC
InventorsJoshua A. Silveira, Viatcheslav V. Kovtoun, Eloy R. Wouters
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Abstract
An ion separation device comprising a plurality of electrodes arranged in a two-dimensional grid, a gas supply configured to provide a gas flow along the first direction, and an ion inlet arranged to receive ions. The plurality of electrodes is configured to create one or more pseudopotential barriers of increasing magnitude along a first direction. A drag force is applied to the ions by the gas flow is opposed by a pseudopotential gradient of the plurality of electrodes.
Claims29
An ion separation device comprising:
- a plurality of electrodes arranged in a two-dimensional grid, wherein the plurality of electrodes is configured to create pseudopotential barriers separating a plurality of pseudopotential wells, the pseudopotential barriers increasing in magnitude along a first direction;
- a gas supply configured to provide a gas flow along the first direction;
- and
- an ion inlet arranged to receive ions, wherein a drag force applied to the ions by the gas flow is opposed by a pseudopotential gradient of the plurality of electrodes.
A mass spectrometer system comprising:
- an ion source configured to produce ions;
- an ion separation device including
- a plurality of electrodes arranged in a two-dimensional grid, wherein the plurality of electrodes is configured to create pseudopotential barriers separating a plurality of pseudopotential wells, the pseudopotential barriers increasing in magnitude along a first direction;
- a gas supply configured to provide a gas flow along the first direction;
- and
- an ion inlet arranged to receive the ions, wherein a drag force applied to the ions by the gas flow is opposed by a pseudopotential gradient of the plurality of electrodes;
- and
- a mass analyzer configured to measure a mass to charge ratio of the ions.
A method of separating ions comprising:
- providing RF potentials to a plurality of electrodes arranged in a two-dimensional grid such that pseudopotential barriers separating a plurality of pseudopotential wells are formed, the pseudopotential barriers increasing in magnitude along a first direction;
- supplying a gas flow through the two-dimensional grid in the first direction;
- injecting ions into the two-dimensional grid;
- and
- separating the ions within the two-dimensional grid wherein a drag force applied by the gas flow is opposed by a pseudopotential gradient of the plurality of electrodes.
Dependencies are inferred from the claim text.