Abstract
Experimental and theoretical studies of singlet oxygen excitation in traveling microwave discharge (TMW) are presented. Singlet oxygen O2(a1Δg) concentrations and atomic oxygen mole fraction have been measured for different pressures, input powers and distances from mw resonator. It was shown that a steady-state traveling microwave discharge with a coaxial cavity resonator could provide maximal O2(a1Δg) yield of 22% for 2 Torr of pure oxygen and 27-30% for He : O2 = 1:1 mixture. Developed two-dimensional (r,z) model for calculations of plasma-chemical kinetics, heat and mass transfer was used for simulation of processes in TMW discharge under study. Effects of gas pressure, gas flow rate and input power are studied and compared with experimental measurements of O2(a1Δg) concentrations and atomic oxygen mole fractions.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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