Stored waveform inverse Fourier transform
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IUPAC RECOMMENDATIONS 2013 
Stored waveform inverse Fourier transform (SWIFT) 

Technique to create excitation waveforms for ions in Fourier transformion cyclotron resonancemass spectrometers or Paul ion traps. An excitation waveform in the timedomain is generated by taking the inverse Fourier transform of an appropriate frequencydomain programmed excitation spectrum, in which the resonance frequencies of ions to be excited are included.

Related Term(s): 
Reference(s):
S. Guan, A. G. Marshall. Int. J. Mass Spectrom. Ion Processes 157/158, 5 (1996). (http://dx.doi.org/10.1016/S01681176(96)044618 ) PSIMS: 
From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PACREC060406 © IUPAC 2013. 