Journal of Theoretical and Applied Physics (JTAP) The effect of mixed electric field on characteristic of ozone generation in a DBD plasma source Volume 14 (2020) Issue 3, July 2020 2023 11 17 The effect of mixed electric field on characteristic of ozone generation in a DBD plasma source 10.1007/s40094-020-00385-2 EN Pourya Seyfi Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113, Iran Mehrdad Rezaei Golghand Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113, Iran Saeed Ghavami Sabouri Department of Physics, University of Isfahan, Isfahan 81746‑73441, Iran 0000-0002-6200-4459 Hamid Ghomi Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran 0000-0003-2203-5194 Journal Article 2023 11 17 AbstractIn this paper, we have presented a new power supply structure for ozone generation in a dielectric barrier discharge reactor, so that a high-frequency pulse electric field is applied on the reactor simultaneously with a low-frequency sinusoidal electric field, referred as mixed electric field. In this study, the effect of mixed electric field variation on ozone production efficiency has been investigated and increasing effects on ozone production have been observed when the reactor temperature decreases. This performance has been achieved by modifying the mechanism of electrical discharge and decrease in filamentary discharge in plasma. By examining the spectral lines of atomic emission spectroscopy, the highest peak of the oxygen (O I) spectral lines was observed in the spectrum of the mixed electric field structure. Also by qualitative comparison of the spectral lines, the lowest intensity for the oxygen (O II) spectral lines was observed in this spectrum. Practically, this technique allows us to achieve higher ozone efficiency with less electrical power. Eventually, with the electric field mixing, we were able to achieve a 4.5% efficiency with 7.7 g/h of ozone generation at 2 kW/m2 with 2 L/min injector oxygen. In addition, by electric field mixing, we were able to reduce the reactor temperature from 66 to 41 °C.