H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 49/06 (2006.01) H01J 49/04 (2006.01) H01J 49/10 (2006.01) H01J 49/26 (2006.01) H01J 49/40 (2006.01)
Patent
CA 2227806
A method and apparatus are provided for providing an ion transmission device or interface between an ion source and a spectrometer. The ion transmission device can include a multipole rod set and includes a damping gas, to damp spatial and energy spreads of ions generated by an ion source. The multipole rod set has the effect of guiding the ions along an ion path, so that they can be directed into the inlet of a mass spectrometer. The invention has particular application to MALDI (matrix-assisted laser desorption/ionization) ion sources, which produce a small supersonic jet or matrix molecules and ions, which is non-directional, and can have ions travelling in all available directions from the source and having a wide range of energy spreads. The ion transmission device can substantially spread out the generated ions along an ion axis. Consequently, a number of pulses of ions can be delivered to the time-of-flight or other spectrometer, for each cycle of the spectrometer.
Ens Erich W.
Krutchinsky Andrew N.
Loboda Alexandre
Spicer Victor L.
Standing Kenneth G.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
University Of Manitoba
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