The v 1 + v 3 Bands of the OOO and OOO Isotopomers of Ozone

Using 0.002 cm resolution Fourier transform absorption spectra of an O enriched ozone sample, an extensive analysis of the v 1 + v 3 bands of the OOO and OOO isotopomers of ozone has been performed for the first time. The experimental rotational levels of the (101) vibrational states were satisfactorily reproduced using a Hamiltonian matrix that takes into account the observed rovibrational resonances. More precisely, for OOO, as for the other C 2 v -type ozone isotopomers, it was necessary to account for the Coriolis type resonances linking the (101) rotational levels with the levels of the (200) and (002) vibrational states and the Darling-Dennison interaction coupling the levels of (200) with those of (002). For the C s -type isotopomer, namely OOO, as for OOO and OOO, it proved necessary to also account for an additional Δ K a =±2 resonance involving the rotational levels from (101) and (002) (J.-M. Flaud and R. Bacis, Spectrochimica Acta Part A 54 , 3-16 (1998)). Using a Hamiltonian matrix which takes these resonances explicitly into account, precise vibrational energies and rotational and coupling constants were deduced, leading to the following band centers: v 0 ( v 1 + v 3 )=2078.3496 cm for OOO and v 0 ( v 1 + v 3 )=2098.8631 cm for OOO.