Ozone, the triatomic form of oxygen, is generated by recombining
oxygen atoms with oxygen molecules. This process takes place in
the gap between the dielectric layer on the high voltage electrode
and an earth electrode in the ozone generator vessel. When high
voltage is applied to this arrangement a silent electrical discharge
occurs in the gap which excites the oxygen molecules in the
feed gas fl owing through the gap which causes them to split and
combine with other oxygen molecules to form ozone.