Investigation on the Dielectric Properties of CO2 and CO2-Based Gases Based on the Boltzmann Equation Analysis

In this paper,the dielectric properties of CO_2,CO_2/air,CO_2/O2,CO_2/N_2,CO_2/CF_4,CO_2/CH_4,CO_2/He,CO_2/H_2,CO_2/NH_3 and CO_2/CO were investigated based on the Boltzmann equation analysis,in which the reduced critical electric field strength(E/N)crof the gases was derived from the calculated electron energy distribution function(EEDF) by solving the Boltzmann transport equation.In this work,it should be noted that the fundamental data were carefully selected by the published experimental results and calculations to ensure the validity of the calculation.The results indicate that if He,H_2,N_2 and CH_4,in which there are high ionization coefficients or a lack of attachment reactions,are added into CO_2,the dielectric properties will decrease.On the other hand,air,O2,NH_3 and CF_4(ranked in terms of(E/N)_(cr) value in increasing order) have the potential to improve the dielectric property of CO_2 at room temperature.