Line Intensities of 12C16O2 in the 1.2–1.4 μm Spectral Region

Near infrared spectroscopy of carbon dioxide I. 16O12C16O line positions

“…[20]. Previous work on these absorptions was limited mostly to determinations of the transition intensities [23,[70][71][72]; there are no reported high-resolution laboratory measurements of the low pressure line positions for these transitions.…”

“…Although Mandin observed these transitions in Venusian spectra [20], the R92 line positions for both transitions were apparently calculated based on spectroscopic constants for the 10032 and 10031 states determined from BaillyÕs 4.5 lm emission spectra [28] and not from direct observation of the 1.2 lm transitions. Previous work on these absorptions has focused primarily on determining the band intensities [23,[70][71][72]; there are no reported high-resolution laboratory measurements of the low pressure line positions for the 10032 00001 or 10031 00001 transitions. The 10032 00001 (S 0 v ¼ 0:431) and 10031 00001 (S 0 v ¼ 0:614) bands were identified in Spectrum #3 with rotational transitions observed through J 0 ¼ 45 and 43, respectively, and maximum absorption strengths of $40% as seen in Fig.…”

“…The G v values given for Bailly [28] have been calculated by adding the 10001 or 10002 G v value from R92 to the corrected sum of the band centers reported in Table III of [28]; the correction factor [63] was 0.999999817. Also included in Table 14 are the vibrational origins determined by Teffo et al [23] from an analysis of their low pressure spectrum (5.04 Torr CO 2 + 4.025 Torr CO, 40.18 m path length, T ¼ 295 K). The different determinations of the G v values, with the exception of the Mandin values, agree within 5 Â 10 À4 cm À1 and overlap within their respective 3r uncertainties.…”

“…Systematic inadequacies in the CO 2 line parameters are observed in the fitting residuals. et al [23]. Chou et al [24] used a diode laser to measure lines near 6500 cm À1 .…”

Infrared Spectra of the 16O12C17O and 16O12C18O Species of Carbon Dioxide: The Region 500–1500 cm−1

“…The sets of effective Hamiltonian parameters obtained allowed us to reproduce all line positions selected from the literature with a root mean-squares (RMS) deviation near to 0.001 cm −1 . The eigenfunctions of these effective Hamiltonians have been used for line intensities fittings (2,3,5,6). The parameters of the matrix elements of the effective dipole moment operators corresponding to several series of transitions have been derived.…”