Mass spectrometer

Details Mass spectrometer Mass spectrometer

H - Electricity

01

J

H01J 49/26 (2006.01) H01J 49/06 (2006.01) H01J 49/36 (2006.01)

Patent

CA 2431603

A mass spectrometer is disclosed having a gas collision cell 25. An AC or RF ion guide 22 comprising a plurality of ring electrodes which preferably have the same internal diameter is provided within the gas collision cell 25. The ion guide 22 extends upstream and/or downstream of the gas collision cell 25 so that ions may be continuously radially confined as they pass from a vacuum chamber 28 maintained at a relatively low pressure, through an inlet differential pumping aperture 29 to the gas collision cell 25, through the gas collision cell 25 and then out of the gas collision cell 25 through an outlet differential pumping aperture 30.

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