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In this research, the decomposition of CO2 in CO2/O2 pulsed discharge was studied. The developed model is based on the physical processes involved in the discharge with the CO2 plasma chemistry, the electrical circuit, and the Boltzmann equations. The fundamental chemistry of CO2/O2 gas mixture used in this work is based on a full set of processes regrouped in 113 reactions involving 21 species of the discharge. The obtained numerical results show the temporal variations of electrical parameters and species concentrations of the discharge. We have also studied the effect of some discharge parameters (gas pressure, dielectric capacitance, applied voltage, concentration of O2 in CO2/O2 gas mixture, and frequency) on the discharge behavior.

The aim of this work is to highlight, through numerical modeling, the chemical and the electrical characteristics of xenon chloride mixture in XeCl* (308 nm) excimer lamp created by a dielectric barrier discharge. A temporal model, based on the Xe/Cl2 mixture chemistry, the circuit and the Boltzmann equations, is constructed. The effects of operating voltage, Cl2 percentage in the Xe/Cl2 gas mixture, dielectric capacitance, as well as gas pressure on the 308-nm photon generation, under typical experimental operating conditions, have been investigated and discussed. The importance of charged and excited species, including the major electronic and ionic processes, is also demonstrated. The present calculations show clearly that the model predicts the optimal operating conditions and describes the electrical and chemical properties of the XeCl* exciplex lamp.

The aim of this work is to highlight some quantities characterizing the Ne/Xe/HCl gas mixture plasma at high pressure and under uniform preionization conditions. This mixture is used as excitation medium for XeCl excimer lasers. A comprehensive model of discharge kinetics is presented. The model combines the physical processes in the discharge with the chemistry of formation and destruction of the excimer molecule. It is based on an extensive reaction scheme including the major electronic and ionic processes. The importance of excited atomic and molecular states is demonstrated. A parametric study is presented.