Dataset from JPP article

A homogeneous dielectric barrier discharge (DBD) can be achieved through various strategies for controlling the power density, such as using nanosecond (ns) pulses. In this paper, a homogeneous DBD was generated within ns high-voltage (HV) repetitive pulses in a 1 mm air gap. The ns pulse was generated within a gas switch based on a thyratron. The applied voltage pulse has a pulse repetition frequency (PRF) of 17 kHz, a maximum amplitude of 10 kV, and a full width at half maximum (FWHM) of 400 ns. Voltage-current waveforms and optical emission spectroscopy (OES) were obtained. Then, the DBD was numerically modeled using COMSOL Multiphysics to simulate the spatiotemporal evolution of key reactive oxygen and nitrogen species within the discharge gap. Simulation results indicated that the discharge characteristics depend extremely on the shape of the pulse. Also, the x-component of the electric field penetrates deeply into the plasma. While the electron density is temporally localized, it is spatially distributed throughout the gap, contributing to a uniform discharge. Furthermore, unlike N₂⁺ ions, the densities of O₂⁻ and O₂⁺ persist for a longer duration after the termination of each pulse.