Simulation of dielectric barrier discharge in argon-helium mixture for investigate the roles of plasma pressure and plasma temperature

A one-dimensional fluid model is developed to analyze the effects of temperature and pressure on the characteristics of radiofrequency dielectric barrier discharge plasma. The model is run for an argon-helium mixture, in order to plot the maximum peak values of electron temperature, electric field strength and various species densities including electrons, atoms, ions and excited species as a function of plasma temperature in the range 300-550K, and as a function of plasma pressure in the range 0.2-1atm. The results show that an increase in the plasma temperature leads to an increase in electron temperature and electron density, and a decrease in electric field strength and non-electron species densities. In addition, an increase the plasma pressure leads to a decrease in electron temperature, an increase in electric field strength, and an increase in all species densities.