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

Ozone (O
₃
) 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 O
₂
corona plasma. Densities of O and (O
₃
) radicals are determined from their gross formation and destruction. Net ( O
₃
) density so attained in steady state at
T
= 300 K is over 10
²⁵
m
^-3
for
P
~
bar
and
ne
~ 10
¹⁵
m
^-3
. However, net O density for the same is lower ~10
²⁰
m
^-3
even though O density exceeded (O
₃
) density in early times of formation. It is shown that (O
₃
) density reduced with temperature heated by discharge in corona, while O density reduced with
T
up to 500 K and thereafter increased to ~10
²¹
m
^-3
with still higher
T
. Both O and (O
₃
) densities varied proportional to the electron density enhanced by avalanche in corona. (O
₃
) varied proportional to pressure, and O exhibited swing to inverse proportionality with larger
P
.