Ozone production in nanosecond pulsed dielectric barrier discharge in synthetic air: The effect of pulse width

This work investigates the effect of pulse width on the characteristics of electrical discharge, optical emission spectra and ozone production in a water electrode DBD using a modulable nanosecond pulsed power supply. Results show that the increase of pulse width tpw slightly increases the spectral intensity and the rotational temperature Trot, with a typical Trot of 299 ± 5 K at an applied peak voltage Vp of 18.6 kV and a tpw of 400 ns. The electronic excitation temperature Texc increases linearly with Vp and gradually with tpw, while the electron density ne shows a non-linear relationship with tpw. Results also show that an increase in tpw slightly increases the energy density. At low energy densities (SIE