O2(bΣ1+g) relaxation in active medium of oxygen-iodine laser

G. I. Tolstov; M. V. Zagidullin; N. A. Khvatov; I. A. Medvedkov; P. A. Mikheyev

doi:10.1117/12.2315801

26 April 2018 O₂(b¹∑⁺_g) relaxation in active medium of oxygen-iodine laser

G. I. Tolstov, M. V. Zagidullin, N. A. Khvatov, I. A. Medvedkov, P. A. Mikheyev

Proceedings Volume 10717, Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV; 1071706 (2018) https://doi.org/10.1117/12.2315801
Event: Saratov Fall Meeting 2017, 2017, Saratov, Russian Federation

Abstract

Rate constants for the removal of O₂ b¹∑⁺_g by collisions with O₂, N₂, CO₂ and H₂O have been determined at temperature 297 K. O₂(b¹∑⁺_g) was excited by pulses from a tunable dye laser, and the deactivation kinetics were followed by observing the temporal behavior of the b¹∑⁺_g - X³∑^-_g fluorescence. The removal rate constants for CO₂, N₂ and H₂O were not strongly dependent on temperature, and could be represented by the expressions k_CO₂=(1.8±0.05)×10^-16; k_N2=(2.2 ± 0.2)×10^-15, and k_H2O=(6.12±0.67)×10^-12 cm³ molecule^-1 s^-1. Rate constant for O₂(b¹∑⁺ ) removal by O₂(X), being orders of magnitude lower, represented by the fitted expression k_O2=(3.67 ± 0.06)×10^-17 cm³ molecule^-1 s^-1. All of the rate constants measured at room temperature were found to be in good agreement with previously reported values.

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G. I. Tolstov, M. V. Zagidullin, N. A. Khvatov, I. A. Medvedkov, and P. A. Mikheyev "O₂(b¹∑⁺_g) relaxation in active medium of oxygen-iodine laser", Proc. SPIE 10717, Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV, 1071706 (26 April 2018); https://doi.org/10.1117/12.2315801

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