A NEAR-INFRARED FOURIER-TRANSFORM PLANAR SUPERSONIC JET SPECTROMETER FOR ROVIBRATIONAL STUDIES OF WEAKLY-BOUND DIMERS AND TRIMERS
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abstract
A high-resolution FTIR supersonic slit jet absorption spectrometer is described for the investigation of weakly bound dimers and trimers in the near-infrared spectral region. The spectrometer is demonstrated to conservatively have a sensitivity of 6108 molecules/cc/state and can be operated at an apodized resolution of 0.004 cm-1. To illustrate the performance of the spectrometer, it has been applied to the rovibrational analysis of the band spectra of three weakly bound species in the near infrared: 1 OC-HF, 1 N2-HCl, and 5 (H35Cl)3. The recorded spectra of these species are compared with corresponding investigations using state-of-the-art tunable infrared laser supersonic jet or molecular-beam spectrometers to illustrate the capabilities and limitations of the current FTIR supersonic jet spectrometer. 1995 American Institute of Physics.
