Temporal Development of Ozone Generation in Electron-Induced Corona-Discharge Plasma

Ozone (O₃) generation and its temporal development to steady state are investigated in a precise model using all high-rate reactions for various conditions of gas pressure (P), electron density (ne), and temperature (T) of an evolving electron-induced O₂ corona plasma. Densities of O and (O₃) radicals are determined from their gross formation and destruction. Net ( O₃) density so attained in steady state at T = 300 K is over 10²⁵ m^-3 for P ~ bar and ne ~ 10¹⁵ m^-3. However, net O density for the same is lower ~10²⁰ m^-3 even though O density exceeded (O₃) density in early times of formation. It is shown that (O₃) density reduced with temperature heated by discharge in corona, while O density reduced with T up to 500 K and thereafter increased to ~10²¹ m^-3 with still higher T. Both O and (O₃) densities varied proportional to the electron density enhanced by avalanche in corona. (O₃) varied proportional to pressure, and O exhibited swing to inverse proportionality with larger P.