Kinetics of O-2(b (1)Sigma(+)(g)) in oxygen RF dischargesстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] Kinetics of o-2(b (1)sigma(+)(g)) in oxygen rf discharges / A. S. Kovalev, D. V. Lopaev, Y. A. Mankelevich et al. // Journal of Physics D - Applied Physics. — 2005. — Vol. 38, no. 14. — P. 2360–2370. Studies of the O-2(b(1)Sigma(g)(+)) kinetics in the afterglow of three RF discharges having different configurations are presented. Experiments with a slow flow velocity transverse capacitive RF discharge were performed and detailed measurements of the spatial evolution Of O-2(b(1)Sigma(g)(+)), O-2(a(1)Delta(g)), O(P-3) and flow temperature were taken. Simulations of three different experimental configurations were in good agreement with the data for the spatial decay of O-2(b(1)Sigma(g)(+)). The simulations also provided reasonable agreement with experimental data for atomic oxygen, O-2(a(1)Delta(g)) and temperature, where the data were available. Updated electron impact cross-sections for oxygen dissociation were included in the simulations; this proved critical for proper modelling of the production of atomic oxygen and the subsequent decay of O-2(b(1)Sigma(g)(+)). At low oxygen atom densities the decay Of O-2(b(1)Sigma(g)(+)) was principally from heterogeneous quenching. For the slow flow velocity experiment, O atom recombination and O-2(b(1)Sigma(g)(+)) deactivation by the walls play an important role; in the far downstream afterglow region a quasi-stationary O-2(b(1)Sigma(g)(+)) concentration was found owing to a near-equilibrium between the pooling reaction and losses to the walls for this slow velocity case. [ DOI ]

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