Multi-pressure stage mass spectrometer and methods

H - Electricity – 01 – J

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H01J 49/24 (2006.01) H01J 49/26 (2006.01)

Patent

CA 2698361

A mass spectrometer includes a plurality of guide stages for guiding ions between an ion source and an ion detector along a guide axis. Each of the guide stages is contained within one of a plurality of adjacent chambers. Pressure in each of the plurality of chambers is reduced downstream along the guide axis to guide ions along the axis. Each guide stage may further include a plurality of guide rods for producing a containment filed for containing ions about the guide axis, as they are guided to the detector.

La présente invention concerne un spectromètre de masse qui comprend une pluralité d'étages de guidage destinés à guider des ions entre une source d'ions et un détecteur d'ions le long d'un axe de guidage. Chacun des étages de guidage est contenu à l'intérieur d'une chambre faisant partie d'une pluralité de chambres adjacentes. La pression dans chacune des multiples chambres est réduite en aval le long de l'axe de guidage pour guider des ions le long de l'axe. Chaque étage de guidage peut en outre comprendre une pluralité de tiges de guidage destinées à produire un champ de confinement servant à contenir les ions autour de l'axe de guidage, alors qu'ils sont guidés vers le détecteur.

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