Discharges of point-to-plate gaps in pure water

A preliminary study on conduct ions and discharges of three kinds of gaps-a conventional point-to-plate gap, a conventional point-to-plate gap with field controlling electrode, and a hole-to-plate gap with field controlling electrode in pure water-was conducted to check the potential of the latter as ozone generators. The hole-to-plate gap with a finer hole diameter showed very low breakdown voltages in pure water which could be due to the presence of a stable gas cavity in the hole where partial breakdown could take place easily, the oxygen molecules could be broken down into oxygen atoms, and concurrently ozone could be produced effectively in the hole cavity. The hole-to-plate gap with the field controlling electrode could potentially be used as an ozone generator utilizing the two ozone generating mechanisms of electrolysis and corona discharge, whereas conventional ones are just one of these mechanisms