Fourier transform investigation and {open_quotes}Ritz{close_quotes} analysis of the torsion-rotation far-infrared spectrum of O-18 methanol
- Univ. of New Brunswick, Fredericton (Canada)
- Universita di Pisa (Italy); and others
This is a fundamental study of the torsion-rotation energy level manifold of the ground vibrational state of CH{sub 3}{sup 18}OH. The spectra, ranging from 15-470 cm{sup -1} with a resolution of 0.002 cm{sup -1}, have been recorded at the Herzberg Institute of Astrophysics of the National Research Council in Ottawa and the Physical Chemistry Institute of Justus-Liebig-Universitaet, Giessen. Both the {open_quotes}Ritz{close_quotes} global fitting program and spreadsheet tables for individual subbands have been used in this study. More than 7,000 lines and 1,800 levels of A torsional symmetry, and 10,000 lines and 2,500 levels of E symmetry have so far been assigned and evaluated. As well, interactions involving {Delta}K = 1, {Delta}K = 2 and {Delta}K = 4 perturbations have been observed and analyzed. This study is helpful in providing a comprehensive data set with which to test models for the theoretical analysis of asymmetric top molecules with internal rotation. It has also been very useful in supplying solid ground-state combination differences required for the investigation of excited vibrational states, and the ground-state links needed to form closed combination loops in the assignment of optically-pumped FIR laser emission.
- OSTI ID:
- 456892
- Report Number(s):
- CONF-9506113-; TRN: 96:005788-0052
- Resource Relation:
- Conference: 50. symposium on molecular spectroscopy, Columbus, OH (United States), 12-16 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Ohio State University 50th international symposium on molecular spectroscopy; PB: 371 p.
- Country of Publication:
- United States
- Language:
- English
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