V-T relaxation of vibrationally excited singlet oxygen molecule in the EOIL systems

A. P. Torbin; M. C. Heaven; V. N. Azyazov

doi:10.1117/12.2257050

13 January 2017 V-T relaxation of vibrationally excited singlet oxygen molecule in the EOIL systems

A. P. Torbin, M. C. Heaven, V. N. Azyazov

Proceedings Volume 10254, XXI International Symposium on High Power Laser Systems and Applications 2016; 102540K (2017) https://doi.org/10.1117/12.2257050
Event: XXI International Symposium on High Power Laser Systems and Applications, 2016, Gmunden, Austria

Abstract

Kinetics of vibrationally-excited singlet oxygen O₂(a¹Δ,v) molecule have been examined using pulsed laser technique.O₂(a¹Δ,v) molecules were produced by the pulsed 266 nm laser photolysis of ozone. The kinetics of O₂(a¹Δ) quenching were followed by observing the 1268 nm fluorescence of the O₂ a¹Δ-X³Σ transition. It has been found that the loss of O₂(a¹Δ,v) in the O(³P)/O₃/N₂ mixture is carried out both in chemical and in V-T process. We observed that the vibrational excitation of singlet oxygen molecule enhances the rate of reaction between O₂(a¹Δ,v) and O³ molecules. The rate constant of this process was estimated to be in the range 10^-12-10^-11 cm³/s. Rate constant of O²(a,v=1) quenching by CO² was found to be (1.03±0.07)×10^-14 cm³/s.

Citation Download Citation

A. P. Torbin, M. C. Heaven, and V. N. Azyazov "V-T relaxation of vibrationally excited singlet oxygen molecule in the EOIL systems", Proc. SPIE 10254, XXI International Symposium on High Power Laser Systems and Applications 2016, 102540K (13 January 2017); https://doi.org/10.1117/12.2257050

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