Mass spectrometer

Details Mass spectrometer Mass spectrometer

H - Electricity

01

J

H01J 49/26 (2006.01) H01J 49/02 (2006.01) H01J 49/06 (2006.01) H01J 49/10 (2006.01) H01J 49/40 (2006.01)

Patent

CA 2434143

A mass spectrometer is disclosed comprising a collision cell 1. Ions having substantially different mass to charge ratios are arranged to be transmitted through at least a portion of the collision cell 1 at substantially the same time and with substantially the same velocity preferably by means of one or more transient DC voltages or one or more transient DC voltage waveforms which are applied to the electrodes 2 forming the collision cell 1 so that ions are urged through the collision cell 1 at a constant controlled velocity. By appropriate setting of the velocity of the DC voltage or DC voltage waveform passing along the length of the collision cell 1 an efficient collision cell is provided which is able to fragment ions having considerably different mass to charge ratio at substantially the same time in an optimal manner.

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