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Ion Trapping, Storage, and Ejection in Structures for Lossless Ion Manipulations.

TitleIon Trapping, Storage, and Ejection in Structures for Lossless Ion Manipulations.
Publication TypeJournal Article
Year of Publication2015
AuthorsZhang X, Garimella SVB, Prost SA, Webb IK, Chen T-C, Tang K, Tolmachev AV, Norheim RV, Baker ES, Anderson GA, Ibrahim YM, Smith RD
JournalAnal Chem
Abstract

A new Structures for Lossless Ion Manipulations (SLIM) module, having electrode arrays patterned on a pair of parallel printed circuit boards (PCB), was constructed and utilized to investigate capabilities for ion trapping at a pressure of 4 Torr. Positive ions were confined by application of RF voltages to a series of inner rung electrodes with alternating phase on adjacent electrodes, in conjunction with positive DC potentials on surrounding guard electrodes on each PCB. An axial DC field was also introduced by stepwise varying the DC potentials applied to the inner rung electrodes to control the ion transport and accumulation inside the ion trapping region. We show that ions can be trapped and accumulated with up to 100% efficiency, stored for at least 5 h with no significant losses, and then could be rapidly ejected from the SLIM trap. The present results provide a foundation for the development of much more complex SLIM devices that facilitate extended ion manipulations.

DOI10.1021/acs.analchem.5b00214
Alternate JournalAnal. Chem.
PubMed ID25971536
PubMed Central IDPMC4523076
Grant ListP41 GM103493 / GM / NIGMS NIH HHS / United States
P41 GM103493 / GM / NIGMS NIH HHS / United States
Area of Research: 
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