A chemical kinetic model of dielectric barrier discharge in N2 and O2 mixtures was established according to different energy transfer processes

which includes the processes of electron impact excitation

dissociation

ionization

electron attachment and detachment

recombination

and neutral molecule involved reaction.The electron energy distribution function was obtained by solving the Boltzmann equation

and then reaction rate constant of electron-molecule collision was calculated by the electron energy distribution function.Substituting the reaction rate constant into the equation

the calculation results show that the particle density of O

O3

N2 excitation states and O2 excitation states increase first and then decrease

finally approaching a constant.The density of O atoms is affected by N2 excitation states

and increases when O2 volume fraction decreases.