Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer (FT-ICR)
A high-frequency @M03732@ in which the @C01509@ motion of ions, having different mass/charge ratios, in a constant magnetic field is excited essentially simultaneously and coherently by a pulse or a radio-frequency electric field applied perpendicular to the magnetic field. The excited @C01509@ motion of the ions is subsequently detected on so-called receiver plates as a time domain signal that contains all the @C01509@ frequencies that have been excited. Fourier @T06446@ of the time domain signal results in the frequency domain FT-ICR signal which, on the basis of the inverse proportionality between frequency and the mass/charge ratio, can be converted into a @M03749@. The term is sometimes contracted to Fourier transform @M03732@ (FT-MS).
See also:
ion cyclotron resonance (ICR) mass spectrometer
PAC, 1991, 63, 1541. (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1545 [Terms] [Paper]