Physics
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..conferf09y&link_type=abstract
"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec
Physics
Mini-Symposium: The Thz Cosmos
Scientific paper
Although water is just a simple triatomic molecule, its spectroscopy still remains a challenge due to the ever increasing amount of available data. Two types of data have been recently obtained for water:
Accurate frequencies have been measured for transitions in the sub millimeter and terahertz domains involving high-lying rovibrational levels up to the first triad. 149 transitions have been measured between 300 GHz and 2 THz and 26 from 2.5 to 2.7 THz. These b-type transitions take place within one of the five first vibrational states.
Far infrared transitions involving high-lying rovibrational levels have been recorded recently in the 50 to 600 Cm-1 region using the emission spectrum of a continuous flow of water vapor rovibrationaly excited by an electrodless radio-frequency discharge.
3793 transitions with Δ K_a = 1 within one of the five first vibrational states of the molecule have been assigned so far and involve J-values up to 25 and K_a-values up to 15. There remains a large number of unassigned transitions involving either higher lying vibrational states, larger values of Δ K_a, or taking place between different vibrational states. The paper will focus on the results of the analysis of a large data set consisting of already published data and of the two new data sets. The number of data is equal to 20491 and the bending-rotation theoretical approach will be used for the energy level calculation.
Pirali and Vervloet, Chem. Phys. Letters, 423 (2006) 376.
Coudert, Wagner, Birk, Baranov, Lafferty, and Flaud, J. Molec. Spec. 251 (2008) 339.
Coudert, J. Molec. Spec. 181 (1997) 246.
Balcon D.
Brunken Sandra
Coudert Laurent H.
Drouin Brian J.
Martin-Drumel M. A.
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