PPPS-2013: Particle and hybrid modeling of NS pulsed discharges: Discharge structures and electron energies

Summary form only given. ICCD photographs with nanosecond resolution of nanosecond pulsed discharges from a pointed electrode show a characteristic sequence of evolution: first the formation of an ionization cloud around the electrode, and then an expanding spherical ionization front that eventually breaks up into streamers, if the pulse duration permits [1,2].