Faims apparatus and method for separating ions in the gas phase

G - Physics – 01 – N

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G01N 27/62 (2006.01) H01J 49/40 (2006.01) H01J 49/42 (2006.01)

Patent

CA 2499538

A high field asymmetric waveform ion mobility spectrometer (FAIMS) and method for separating ions in the gas phase, the apparatus includes a set of spaced- apart parallel rods, the space between the parallel rods having first and second ends and defines an analyzer region. The apparatus includes an electrical controller for electrically coupling to the set of parallel rods, for applying at least an rf-voltage between the parallel rods of the set of parallel rods in a first operating mode and for applying a combination of an asymmetric waveform voltage and a direct current voltage between the parallel rods of the set of parallel rods in a second operating mode.

La présente invention concerne un spectromètre de mobilité ionique par oscillographie asymétrique en champ intense (FAIMS) qui comprend un ensemble de tiges parallèles espacées, l'espace entre ces tiges parallèles possédant une première et une seconde extrémité et définissant une région d'analyseur. Cet appareil comprend un contrôleur électrique destiné à être électriquement raccordé à l'ensemble de tiges parallèles, de façon à appliquer au moins une tension RF entre les tiges parallèles de cet ensemble de tiges dans un premier mode opératoire et de façon à appliquer une combinaison de tension à forme d'onde asymétrique et une tension de courant direct entre les tiges parallèles de cet ensemble de tiges dans un second mode opératoire.

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