Mass spectrometer and method

Abstract

A method of discriminating noise, the method implemented by a computer comprising a processor and a memory, the method comprising: obtaining a time-domain signal representative of a charge induced in an inductive charge detector by an ion moving in a charge-detection mass spectrometer, CDMS; transforming the time-domain signal into a frequency-domain spectrum comprising a series of frequency-amplitude pairs; and rejecting a particular frequency-amplitude pair of the series of frequency-amplitude pairs not having a respective harmonic frequency-amplitude pair amongst the series of frequency-amplitude pairs.

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