Abstract
AbstractIn Fourier‐transform ion cyclotron resonance (FT‐ICR) mass spectra resulting from the signals detected with a single pair of detection plates (i.e., real‐time‐domain signals), the foldback of spectral information about the Nyquist frequency occurs. In heterodyne mode FT‐ICR mass spectrometry, using quadrature reference signals, a complex ICR signal consisting of two quadrature reference signals, a complex ICR signal consisting of two quadrature signal components can be acquired easily. By Fourier transform of the signal, the reflection of peaks about the Nyquist frequency in the frequency‐domain spectrum can be eliminated. As a result, the available bandwidth of the spectrum is doubled. Validity of this quadrature heterodyne method is confirmed by the experimentally obtained spectrum of Xe+ ions.
Published Version
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