Sub-doppler infrared absorption spectroscopy of Ar-HF [(1000) ← (0000)] in a linear supersonic jet
✍ Scribed by Christopher M. Lovejoy; Michael D. Schuder; David J. Nesbitt
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 288 KB
- Volume
- 127
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
Ultra-sensitive tunable difference frequency IR absorption spectroscopy in a slit supersonic jet has been used to observe sub-Doppler spectra of Ar-HF in the (lO*O) HF stretch and (11'0) HF stretch plus van der Waals bend modes. Linewidths yield a lower limit of 3 X lo-' s for the predissociation lifetime in the vibrationally metastable upper state. The sensitivity of these direct absorption methods ( s 2 X lo9 molecules/cm3 per quantum state), in conjunction with the wide tunability of the difference frequency laser (2.2-4.2 pm) permit high-resolution studies of a large class of van der Waals complexes.