Other
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..confete10y&link_type=abstract
"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec
Other
Atmospheric Species
Scientific paper
A global fit of the six isotopologues of the O_2 molecule has been carried out, with the purpose to support the current and future Earth remote sensing missions. All previously available experimental data from the following systems were collected and used in the analysis: the microwave transitions in the X3Σ-G and A1ΔG states, the infared transitions from the A1ΔG - X3Σ-G, B1Σ+G - X3Σ-G, and B1Σ+G - A1ΔG systems, the UV transitions from the B3Σ-U - X3Σ-G Schumann-Runge system. For the main 16O_2 isotopologue, experimental data are available for the following vibrational states: v=0-18 for X3Σ-G, v=0-1 for a^1{Δ}_g, v=0-17 for B1Σ+G, v=0-17 for B3Σ-U. A band by band fit was first carried out for these 16O_2 data to check bad measurements, misassigments and calibration problems. Then all these 16O_2 data were fitted with a Dunham-type model. It was found that most 16O_2 data (98%) could be fitted within 3 times experimental accuracies in the band by band fit; the X3Σ-G, A1ΔG, B1Σ+G states could be well reproduced with the Dunham-type model; but the vibrational energies for v=0-17 of B3Σ-U could not be fitted well with the Dunham-type mode, probably caused by the known perturbations in this state. A band by band fit has been performed for each of the other five minor isotopologues, and a Dunham-type fit is in progress for these data. Eventually data from all the six isotopologues will be simultaneously fitted with a multi-isotopologue Dunham model. We will present the most recent fitting results to date.
Drouin Brian J.
Miller Charles E.
Müller Holger S. P.
Yu Shanshan
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