“…29: the electric field distribution in a negative corona in an axially symmetric concentric-cylinder gap in air, computed by means of a steady-state model, was shown to be in good agreement with the time-averaged measurements, 30 performed in a regime with repetitive Trichel pulses. 31 Thus, in the case of a pulsed corona, time-dependent solvers, while being an adequate tool for studies of spatiotemporal evolution of individual pulses (e.g., Refs. [31][32][33][34][35], cannot be used for the direct calculation of time-averaged characteristics of the discharge.…”