Title :
Fast Ionization Wave Development in Atmospheric-Pressure Air
Author :
Starikovskiy, Andrey
Author_Institution :
Dept. of Mech. & Aerosp. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
Pulsed-discharge development in a point-to-plane geometry is investigated with subnanosecond temporal resolution. A short high-voltage pulse with a duration of 400 ps and peak voltage U = 224 kV was applied to a discharge gap of 1-30 mm. The discharge propagated in atmospheric-pressure air. Ultrahigh overvoltage (5-50 times) generates runaway electrons in the front of ionization wave and increases the plasma channel diameter and velocity of ionization wave propagation. Formation of homogeneous atmospheric-pressure nonequilibrium plasma has been demonstrated.
Keywords :
air; discharges (electric); high-voltage techniques; ionisation; plasma transport processes; plasma waves; atmospheric-pressure air; discharge gap; homogeneous atmospheric-pressure nonequilibrium plasma; ionization wave; plasma channel; point-to-plane geometry; pressure 1 atm; pulsed-discharge development; runaway electrons; short high-voltage pulse; size 1 mm to 30 mm; subnanosecond temporal resolution; ultrahigh overvoltage; voltage 224 kV; Atmospheric waves; Cameras; Discharges; Ionization; Plasmas; Propagation; Voltage control; Fast ionization wave; nonequilibrium plasma; pulsed picosecond discharge;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2011.2160738
