Physico-Chemical Investigation of Pulsed Discharge in CO<SUB>2</SUB>/O<SUB>2</SUB> Gas Mixture

International audienceIn this research, the decomposition of CO2 inCO2/O2 pulsed discharge was studied. The developedmodel is based on the physical processes involved in the discharge withthe CO2 plasma chemistry, the electrical circuit, and theBoltzmann equations. The fundamental chemistry ofCO2/O2 gas mixture used in this work is based on afull set of processes regrouped in 113 reactions involving 21 species ofthe discharge. The obtained numerical results show the temporalvariations of electrical parameters and species concentrations of thedischarge. We have also studied the effect of some discharge parameters(gas pressure, dielectric capacitance, applied voltage, concentration ofO2 in CO2/O2 gas mixture, andfrequency) on the discharge behavior