Patent ID: 9735001
Date: 2017-08-15
CPC Classifications: H01J

Claim:
1. An apparatus for ion storage and analysis comprising: at least first and second parallel spaced-apart electrode arrays, the first electrode array comprising a first row of at least two first bar electrodes, the second electrode array comprising a second row of at least two second bar electrodes, the first bar electrodes of the first electrode array being in corresponding arrangement with and facing the second bar electrodes of the second electrode array to establish a plurality of paired facing bar electrodes; a power supply for applying phases of alternating current voltages to the first and second bar electrodes to create alternating electric fields in spaces between the first and second bar electrodes of the paired facing bar electrodes, wherein the first bar electrodes of the first electrode array and the second bar electrodes of the second electrode array are configured to alternate between a positive phase voltage and a negative phase voltage; parallel linear ion trapping regions formed in the spaces between the corresponding first and second bar electrodes of the paired facing bar electrodes, the ion trapping regions being adjacent to one another, wherein the adjacent ion trapping regions are in communication with one another, an ion detector for detecting ions ejected from the apparatus; and a reticulate electrode, wherein at least one of said first and second bar electrodes is provided with an opening through which ions may be ejected from the apparatus, and wherein the reticulate electrode is between the ion detector and the opening.