Numerical modeling of negative corona discharge in dry air: the role or carbon dioxide

Negative corona discharge in a mixture of N₂, O₂ and CO₂, in the same proportion as in dry air, is simulated by using a model that combines the physical and chemical aspects of the problem. The chemical model includes both elementary plasma processes and chemical reactions between molecules and radicals. The corona discharge is generated inside a wire-to-cylinder reactor and the steady radial distribution of electrons, ions and neutral species are predicted as a function of the radial distance to the wire.