No abstract

The spatio-temporal distribution of the radiation of the surface sliding discharge with a duration of ~ 300 ns in stationary air at pressures of 2–200 Torr and under the interaction with plane shock waves at Mach numbers 2.8-3.3 was experimentally studied. The dynamics of the discharge radiation based on the processing of streak images and 9-frame images of the glow, the spectra of the radiation, and the discharge current are analyzed. It is shown that the dependence of the radiation intensity of the discharge interacting with the shock wave correlates with the simulated time dependence of the population of the C3Πu state of nitrogen under shock compression of the plasma region.