Journalartikel

Jahr der Veröffentlichung: 2003

Seiten: 195-211

Zeitschrift: Journal of Molecular Spectroscopy

Bandnummer: 217

Heftnummer: 2

ISSN: 0022-2852

DOI Link: https://doi.org/10.1016/S0022-2852(02)00018-8

Verlag: Elsevier

Abstract: 
The far-infrared emission spectrum of water vapour have been recorded at temperature 1370K in the range 400-850cm(-1) at resolutions (FWHM) 0.0055cm(-1). The measurements have been done in a fused quartz cell with an effective length of hot gas of about 60 cm. Among about 200 lines assigned to the (H2O)-O-18 isotopomer 106 lines have not been reported in previous studies. These newly measured lines correspond to higher values of rotational quantum numbers compared to previous determinations: J(max) = 18 and K-a[max] = 17 for the (0 0 0) <-- (0 0 0) band and J(max) = 15 and K-a(max) = 11 for the (0 1 0) <-- (0 1 0) band. Estimated accuracy of line position measurements is 0.0005cm(-1). To our knowledge rotational transitions within an excited bending state have been measured for the first time for (H2O)-O-18. An extended set of experimental rotational energy levels for (0 0 0) and (0 1 0) vibration states including all previously available data has been determined. A data reduction has been done using the generating function model. The root mean square (RMS) deviation between observed and calculated values is 0.0009 cm(-1) for 305 rotational levels of the (0 0 0) state and 0.0007 cm(-1) for 198 rotational levels of the (0 1 0) state. A comparison of the observed data with the best available predictions from the molecular electronic potential energy surface [J. Chem. Phys. 106 (1997) 46181 and isotopic effects for rotational levels of (0 0 0) and (0 1 0) states are discussed. (C) 2003 Elsevier Science (USA). All rights reserved.

Harvard-Zitierstil: Mikhailenko, S., Tyuterev, V. and Mellau, G. (2003) (000) and (010) states of H218O:: analysis of rotational transitions in hot emission spectrum in the 400-850cm-1 region, Journal of Molecular Spectroscopy, 217(2), pp. 195-211. https://doi.org/10.1016/S0022-2852(02)00018-8

APA-Zitierstil: Mikhailenko, S., Tyuterev, V., & Mellau, G. (2003). (000) and (010) states of H218O:: analysis of rotational transitions in hot emission spectrum in the 400-850cm-1 region. Journal of Molecular Spectroscopy. 217(2), 195-211. https://doi.org/10.1016/S0022-2852(02)00018-8