Patent ID: 8395112
Filing Date: 2013-03-12
Classification: C12Q,G01N,H01J

Abstract:
1. A method of frequency or mass-to-charge ratio (m/z) analysis comprising the steps of: injecting ions into an ion trap mass spectrometer; applying one or more trapping waveform signals to the ion trap to retain the ions inside the ion trap, wherein each ion of the ions has an initial orbit; applying one or more resonance excitation waveform signals to the ion trap to resonate a portion of the ions into a different orbits in the ion trap; exciting the portion of ions in the different orbits to emit photon signals; detecting and acquiring a time-domain photon signal of frequencies of the portion of the ions in the different orbits in the ion trap; and applying fast Fourier transform analysis to obtain the frequency spectrum related to a plurality of m/z ratios of the portion of the ions.