ISSN:
0951-4198
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
In 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.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/rcm.1290040702
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