15min:

A. PERRIN, J.-M. FLAUD, Laboratoire de Photophysique Moléculaire, CNRS, Université Paris Sud, Campus d'Orsay, Bat 210, 91405 Orsay Cedex, France; A. VALENTIN, C. CAMY-PEYRET, Laboratoire de Physique Moléculaire et Applications, C.N.R.S., Université Pierre et Marie Curie, Tour 13, 4 Place Jussieu, 75252 Paris, Cedex 05, France.

Using 0.002cm^-1 Fourier transform absorption spectra of ¹⁷O- enriched sample of ozone, an extensive analysis of the ₃ band together with a partial identification of the ₁ band of the ¹⁷O¹⁷O¹⁶O and ¹⁷O¹⁶O¹⁷O isotopic species of ozone has been performed in the 10 µm region. The experimental rotational levels of the (001) and (100) vibrational states could be reproduced using an Hamiltonian matrix which takes into account the expected rovibrational resonances. As for the other C_s -type ozone isotopomers , the (001) rotational levels of ¹⁷O¹⁷O¹⁶O are involed in both Coriolis and Fermi type resonances with the levels from the (100) vibrational state. On the other hand, for the ¹⁷O¹⁶O¹⁷O C₂v -type isotopomer, only C-type Coriolis resonances have to be considered. Using an Hamiltonian matrix which takes into account these resonances for the (001)-(100) off- diagonal blocks, and an A-type Watson operator for the diagonal blocks, precise vibrational energies and rotational and coupling constants are deduced.