Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

Poster session, J40 203The CW-CRDS spectra of the 16 O 18 O 16 O ozone isotopologue near 6200cm -1 : experiment and analysis of three new bandsDidier Mondelain 1 , Samir Kassi 1 , Alain Campargue 1 , Alain Barbe 2 , EvgeniyaStarikova 2,3 , Marie-Renée De Backer 2 , Vladimir Tyuterev 21 LIPhy, Université Grenoble, France, E-mails: didier.mondelain@ujf-grenoble.fr,samir.kassi@ujf-grenoble.fr, alain.campargue@ujf-grenoble.fr; 2 Université de Reims,France, E-mails: alain.barbe@univ-reims.fr, mr.debacker@univ-reims.fr,vladimir.tyuterev@univ-reims.fr; 3 LTS, V.E. Zuev Institute of Atmospheric Optics,Russia, E-mail: starikova_e@iao.ruMondelain D.Kassi S.Campargue A.Barbe A.De BackerStarikova E.Tyuterev V.The absorption spectra of 16 O 3 , 18 O 3 and two 18 O enriched ozone samples were recordedby CW-Cavity Ring Down Spectroscopy in the 6170-6340 cm -1 spectral range [1, 2 andrefs therein]. The ozone generation from a mixture of 16 O 2 and 18 O 2 leads to theproduction of the six isotopic species. In order to discriminate between their variousforms, two 16 O 2 / 18 O 2 mixtures with 75/25 and 40/60 relative abundance were used. Bylinear combination of the spectra of the two 18 O enriched ozone mixture with those of16 O 3 [3, 4] and 18 O 3 [5], it was possible to separate the contribution of 16 O 16 O 18 O and16 O 18 O 16 O on one side and that of 18 O 18 O 16 O and 18 O 16 O 18 O on the other side.In the 6200 cm -1 region, three relatively intense A-type bands were analysed in 16 O 3[3, 4] and18 O 3 [5], labeled 2ν 2 +5ν 3 , 5ν 1 +ν 3 and 2ν 1 +2ν 2 +3ν 3 (or ν 1 +ν 2 +5ν 3 ),respectively. More recently, these three bands have been analyzed for the C 16 S O 16 O 18 Oisotopologue [6].In this work, we report the analysis of the corresponding bands of the 16 O 18 O 16 O C 2Visotopologue, located at 6151.381, 6182.305 and 6225.250 cm -1 . Energy levels,effective Hamiltonian and transition moment parameters, statistics of the fits for linepositions and intensities, and examples of comparisons between observed and simulatedspectra will be presented. Comparisons between band centres and rotational constantsderived from the experiment with very recent theoretical predictions from a newpotential function [7] will be discussed.References[1] M.R. De Backer-Barilly, A. Barbe et al, J. Mol. Struct. 780, 225, 2006[2] J. Morville, D. Romanini, A. A. Kachanov, Appl. Phys. 78, 465, 2004[3] A. Barbe, M.R. De Backer-Barilly et al, J. Mol. Spectrosc. 242, 156, 2007[4] A. Barbe, M.R. De Backer-Barilly, S. Kassi et al, J. Mol. Spectrosc. 246, 22, 2007[5] A. Campargue, A.W. Liu, S. Kassi et al, J. Mol. Spectrosc. 255, 75, 2009[6] D. Mondelain, S. Kassi, A. Campargue, A. Barbe et al, J. Phys. B, 2012, submitted[7] Vl. G. Tyuterev, R.Kochanov et al, 2012, in preparation1