Patent ID: 8629409
Filing Date: 2014-01-14
Classification: H01J

Abstract:
1. A method of mass spectrometric analysis, comprising: providing an ion interface device partitioned into a plurality of sequentially arranged confinement cells having spatially-fixed locations; accumulating ions within an ion trap; ejecting a first group of ions of the accumulated ions from the ion trap into a first confinement cell of the plurality of confinement cells; fragmenting at least a portion of the first group of ions within the ion interface device; transporting the first group of ions through the ion interface device by successive transfers between adjacent confinement cells, wherein the first group of ions are confined within each confinement cell for a corresponding confinement period; transferring the first group of ions from a final confinement cell of the ion interface device to an entrance of a mass analyzer; mass analyzing the first group of ions; and concurrently with transporting the first group of ions through the ion interface device, ejecting a second group of ions of the accumulated ions from the ion trap into the first confinement cell and transporting the second group of ions separately from the first group of ions.