Singlet oxygen production and quenching mechanisms in travelling microwave discharges

Experimental and theoretical studies of singlet oxygen excitation in travelling microwave (TMW) discharges are presented. Singlet oxygen O2(a1Deltag) concentrations and atomic oxygen mole fraction have been measured for different pressures, input powers and distances from the MW resonator. It was sh...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2004-11, Vol.37 (22), p.3121-3128
Main Authors: Savin, Yu V, Goryachev, L V, Adamenkov, Yu A, Rakhimova, T V, Mankelevich, Yu A, Popov, N A, Adamenkov, A A, Egorov, V V, Ilyin, S P, Kolobyanin, Yu V, Kudryashov, E A, Rogozhnikov, G S, Vyskubenko, B A
Format: Article
Language:English
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Summary:Experimental and theoretical studies of singlet oxygen excitation in travelling microwave (TMW) discharges are presented. Singlet oxygen O2(a1Deltag) concentrations and atomic oxygen mole fraction have been measured for different pressures, input powers and distances from the MW resonator. It was shown that a steady-state TMW discharge with a coaxial cavity resonator could provide a maximal O2(a1Deltag) yield of 22% for 2 Torr of pure oxygen and 27-30% for He : O2 = 1 : 1 mixture. The two-dimensional (r, z) model developed for calculations of plasma-chemical kinetics, heat and mass transfer was used for simulation of processes in the TMW discharge under study. Effects of gas pressure, gas flow rate and input power are studied and compared with experimental measurements of O2(a1Deltag) concentrations and atomic oxygen mole fractions.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/37/22/010