Figure 4. (1+1) REMPI spectra of the five different isotopomers of NO·methane. Whole scans. Spectra recorded in the parent mass channel, except for the CH3D isotopomer, which was recorded in the CH3D+ masschannel (where a small bleed in of O+ signal is seen from the m/z=16 channel, cf. Fig. 3) —see text.