High-Resolution Study of thev5= 1 Level of CDF3

✍ Scribed by P. Pracna; K. Sarka; J. Demaison; J. Cosléou; F. Herlemont; M. Khelkhal; H. Fichoux; D. Papoušek; M. Paplewski; H. Bürger

• Book ID: 102600961
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 452 KB
• Volume: 184
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7302

✦ Synopsis

The degenerate fundamental vibrational level £ 5 Å 1 has been studied using FTIR and sub-Doppler CO 2 laser-sideband spectroscopy, providing the most accurate vibration-rotation transition wavenumbers to this level measured so far, with resolved A 1 -A 2 splittings of the kl Å /1 and kl Å 02 levels. Combined with rotational frequencies measured in the £ 5 Å 1 level by millimeter-and submillimeter-wave spectroscopy, we performed a simultaneous fit reproducing all data with minor exceptions quantitatively. Unlike the recent study of the £ 6 Å 1 level of CDF 3 [H. Bu ¨rger et al., J. Mol. Spectrosc 182, 34-49 (1997).] the unitary equivalence of reduced Hamiltonians for an isolated degenerate fundamental level of a C 3£ molecule was not confirmed for the level studied, making one of the reduced Hamiltonians more suitable for the representation of experimental data.