Mass Spectrometer

摘要

A mass spectrometer is disclosed wherein an ion signal is split into a first and second signal. The first and second signals are multiplied by different gains and are digitised. Arrival time and intensity pairs are calculated for both digitised signals and the resulting time and intensity pairs are combined to form a high dynamic range spectrum. The spectrum is then combined with other corresponding spectra to form a summed spectrum.

主权项

1. A method of detecting ions comprising:
outputting a first signal and a second signal from an ion detector, wherein said first signal corresponds with a signal multiplied or amplified by a first gain and said second signal corresponds with a signal multiplied or amplified by a second different gain; digitising said first signal to produce a first digitised signal and digitising said second signal to produce a second digitised signal; summing said first digitised signal with a plurality of other corresponding first digitised signals to form a first summed digitised signal; summing said second digitised signal with a plurality of other corresponding second digitised signals to form a second summed digitised signal; determining first summed intensity and arrival time, mass or mass to charge ratio data from said first summed digitised signal; determining second summed intensity and arrival time, mass or mass to charge ratio data from said second summed digitised signal; and combining said first summed intensity and arrival time, mass or mass to charge ratio data and said second summed intensity and arrival time, mass or mass to charge ratio data to form a final spectrum.