Fourier transform spectrometer Fractionation methods

Interferometry It is true to state that the renaissance of the RAIRS technique as a general use method in surface science laboratories came about through the use of Fourier-transform (FT) IR spectrometers. This advance was pioneered by Chesters et al. [41-43], who demonstrated that FT-RAIRS could obtain vibrational data on an adsorbed adlayer over a broad wavenumber regime of 4000—700 cm, with sensitivity to fractions of a ML of adsorbate (<0.01 ML of CO, <0.1 ML of hydrocarbon), and with high spectral resolution (typically l-4cm ). 

---