Periodic plasma structures in nanosecond discharge with a slit cathode

Modes of generation of the optical properties of a moderate-pressure nanosecond discharge with a slit cathode in argon

“…where α is the collisional ionization coefficient, n 0 is the initial concentration of initiating electrons, S is the area of the discharge column, ρ is the output resistance of the VPG, and ϑ dr is the electron drift velocity, which is determined by the following approximation [8]: υ dr = 10 6 + 2⋅10 5 …”

“…High-power nanosecond discharges also show promise for triggered high-voltage switches and direct current breakers, for injectors of high-current electron beams, and for other technological devices [4]. In this connection, of special interest is the transverse nanosecond discharge with a slit cathode operating at a moderate gas pressure where an electron beam is also formed [5,6]. Here, the acceleration of electrons occurs in the cathode layer, and their energy at the entrance of the negative glow region is determined by the cathode fall voltage.…”

“…of width of 2 cm and thickness 0.5 cm. The choice of the hollow cathode shape and of the distance between the electrodes was dictated by the requirement for steady operation of the volumetric discharge at moderate gas pressures, which is a necessary condition in pumping gas lasers [5].…”