US 12,422,402 B2
Methods and apparatus for trapping and accumulation of ions
John Daniel DeBord, West Grove, PA (US); Liulin Deng, Chester Springs, PA (US); and Gordon A. Anderson, Benton City, WA (US)
Assigned to MOBILion Systems, Inc., Chadds Ford, PA (US)
Filed by MOBILion Systems, Inc., Chadds Ford, PA (US)
Filed on Mar. 15, 2024, as Appl. No. 18/606,947.
Application 18/606,947 is a continuation of application No. 17/327,159, filed on May 21, 2021, granted, now 11,953,466.
Claims priority of provisional application 63/028,768, filed on May 22, 2020.
Prior Publication US 2024/0248062 A1, Jul. 25, 2024
Int. Cl. G01N 27/00 (2006.01); G01N 27/622 (2021.01); H01J 49/06 (2006.01); H01J 49/16 (2006.01)
CPC G01N 27/622 (2013.01) [H01J 49/061 (2013.01); H01J 49/16 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An apparatus for ion accumulation, comprising:
a first region configured to receive ions and generate a first drive potential configured to guide the ions across the first region; and
a second region configured to receive the ions from the first region, switch between a first state and a second state, the second region including a plurality of segmented electrodes which extend axially across the second region and generate a first electric field when in the first state, and generates a second electric field when in the second state;
wherein the first electric field includes a second drive potential generated by a first electrode group of the segmented electrodes and a gating potential generated by at least one electrode of a second electrode group of the segmented electrodes, wherein the first electric field is configured to cause ions to accumulate in the second region and prevent the ions from entering a third region, and
wherein the second electric field includes a third drive potential generated by the segmented electrode that is configured to guide the ions toward the third region and separate the ions based on mobility as they are guided toward the third region.