摘要 |
A Time of Flight mass analyser is disclosed wherein the time period betwe en successive orthogonal acceleration pulses is less than the time of flight of ions having the maximum mass to charge ratio of interest. As a result, s ome ions are subject to wrap-around and will appear in a subsequent mass spe ctrum. Mass spectra obtained at two different sampling rates may be compared and mass peaks relating to ions which have and have not been subject to wra p-around may be identified.
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