14N216O in Emission in the 4.5-μm Region: Transitions v1v2lv3→v1v2l(v3−1) Occurring between Highly Excited Vibrational States

✍ Scribed by D. Bailly; M. Vervloet

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 394 KB
• Volume: 209
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.2001.8420

✦ Synopsis

The experimental technique which consists of exciting a mixture of N 2 O and N 2 by radio frequency is very efficient for populating very high vibrational levels. Twelve emission spectra of mixtures of N 2 O and N 2 were recorded with a Fourier transform spectrometer at resolutions of 0.006, 0.004, and 0.003 cm -1 in the 4.5-µm region. Among the already known transitions, 10 new vibrational transitions which occur between highly excited levels have been observed. In particular, we have detected the very weak transitions 00 0 5 → 00 0 4 .and 04 0 4 → 04 0 3, which involve the interacting levels 00 0 5 and 04 0 4. The wavenumbers are reported as well as the derived spectroscopic parameters, which allow one to reproduce the experimental wavenumbers within experimental accuracy (< 4 × 10 -4 cm -1 ). The results are in good agreement with the new predictions of N 2 O line positions which have been made using a model calculation based upon the effective hamiltonian approach.