The CW-CRDS spectra of the 16O/18O isotopologues of ozone between 5930 and 6340 cm-1. Part 2: 16O18O16O

International audienceThis work is part of a systematic investigation of the CW-Cavity Ring Down Spectra 16O/18O ozone isotopologues at high sensitivity (noise equivalent absorption αmin≈1×10-10 cm-1). A first contribution [Mondelain D, Campargue A, Kassi S, Barbe A, Starikova E, De Backer-Barilly MR, et al. J Quant Spectrosc Radiat Transfer, 2013;116:49-66] was devoted to the analysis of four bands of the 16O16O18O species of CS symmetry between 5930 and 6340 cm-1. Here we report the analysis of four bands of 16O18O16O of C2V symmetry, vibrationally assigned as 2ν1+2ν2+3ν3_1, 2ν2+5ν3, 5ν1+ν3 and 2ν1+2ν2+3ν3_2. They correspond to the highest vibration excitations observed so far for this isotopomer. Altogether, 1385 rovibrational transitions were assigned up to Jmax=31. Measured line positions were reproduced with rms deviations ranging from 0.005 to 0.013 cm-1, using effective Hamiltonian models accounting for dark state resonance perturbations. The derived band centres and rotational constants are found in good agreement with new theoretical calculations from the molecular potential function. The corresponding lists of 2124 lines are provided as Supplementary Material