Parallel Session: High-resolution, Contributed Talk (15min)

High resolution laser spectroscopy of the ozone molecule at the dissociation threshold near 1.2 µm

S. Vasilchenko1,4, A. Barbe2, E. Starikova1,4, S. Kassi3, D. Mondelain3, A. Campargue3, V. G. Tyuterev4,2*
1V. E. Zuev Institute of Atmospheric Optics SB RAS, 634055 Tomsk, Russia, 2Groupe de Spectrométrie Moléculaire et Atmosphérique, UFR Sciences Exactes et Naturelles, Reims, France, 3Univ. Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, 4Laboratory of Quantum Mechanics of Molecules and Radiative Processes, Tomsk State University, 634050 Tomsk, Russia

High sensitivity spectra of the main ozone isotopologue were recorded using a cavity ring-down spectrometer in the region of 7920–8670 cm-1, covering the range up to the dissociation threshold and above. The sensitivity of the recordings of the order of 2 × 10-11 cm-was achieved that makes it possible to detect high two energy combination bands up to ten vibrational quanta in electronic ground state [1]. Line positions and intensities are measured for these bands. These combination bands are superimposed to vibronic hot bands of the 16Ofrom the (100) and (020) electronic ground state levels to the excited 3A2 triplet state which were analysed [2]. 

This work was supported by the Russian Science Foundation Grant No. 19-12-00171.

[1] Semen Vasilchenko, Alain Barbe, Evgeniya Starikova, Samir Kassi, Didier Mondelain, Alain Campargue, Vladimir Tyuterev, Physical Review A2020, 102, 5, 052804.
[2] Semen Vasilchenko, Didier Mondelain, Samir Kassi, Alain Campargue, Journal of Quantitative Spectroscopy & Radiative Transfer2021, 272, 107678