Quenching of I(2P1/2) by O3 and O(3P)

V. N. Azyazov; I. O Antonov; S. Ruffner; M. C. Heaven

doi:10.1117/12.646061

23 February 2006 Quenching of I(²P_1/2) by O₃ and O(³P)

V. N. Azyazov, I. O Antonov, S. Ruffner, M. C. Heaven

Proceedings Volume 6101, Laser Beam Control and Applications; 61011Y (2006) https://doi.org/10.1117/12.646061
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

Oxygen-iodine lasers that utilize electrical or microwave discharges to produce singlet oxygen are currently being developed. The discharge generators differ from conventional chemical singlet oxygen generators in that they produce significant amounts of atomic oxygen. Post-discharge chemistry includes channels that lead to the formation of ozone. Consequently, removal of I(²P_1/2) by O atoms and O₃ may impact the efficiency of discharge driven iodine lasers. In the present study we have measured the rate constants for quenching of I(²P_1/2) by O(³P) atoms and O₃ using pulsed laser photolysis techniques. The rate constant for quenching by O₃, 1.8x10^-12 cm³ s^-1, was found to be a factor of five smaller than the literature value. The rate constant for quenching by O(³P) was 1.2x10^-11cm³ s^-1. This was six times larger than a previously reported upper bound, but consistent with estimates obtained by modeling the kinetics of discharge-driven laser systems.

Citation Download Citation

V. N. Azyazov, I. O Antonov, S. Ruffner, and M. C. Heaven "Quenching of I(²P_1/2) by O₃ and O(³P)", Proc. SPIE 6101, Laser Beam Control and Applications, 61011Y (23 February 2006); https://doi.org/10.1117/12.646061

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