Title :
Modeling of Laser -Induced Electrical Discharge in Air
Author :
Petrova, Tz.B. ; Penano, J. ; Sprangle, P. ; Fernsler, R. ; Hafizi, B.
Author_Institution :
Div. of Plasma Phys., US Naval Res. Lab., Washington, DC
Abstract :
Summary form only given. The formation and propagation of laser induced streamers in air is studied via two-dimensional (2-D) numerical simulations. The model under development is based on a set of time-dependent hydrodynamics transport equations for electrons and ions, coupled to the Poisson´s equation for the space charge electric field and the rates of various plasmo-chemical reactions. The model describes the physical processes involved in the triggering of electrical discharges by ultrashort high power lasers. A plasma filament formed by the laser between two charged plates acts as a conducting channel through which a guided electrical discharge can occur. In this work we numerically determine the applied electric field required to support the discharge for laser-guided and unguided configurations
Keywords :
Poisson equation; discharges (electric); plasma kinetic theory; plasma production by laser; plasma simulation; plasma transport processes; space charge waves; Poisson equation; conducting channel; hydrodynamics transport equations; laser induced streamers; laser-induced electrical discharge; numerical simulations; plasma filament; plasmo-chemical reactions; space charge electric field; ultrashort high power lasers; Electrons; Hydrodynamics; Laser modes; Laser theory; Numerical simulation; Optical propagation; Poisson equations; Power lasers; Space charge; Two dimensional displays;
Conference_Titel :
Plasma Science, 2005. ICOPS '05. IEEE Conference Record - Abstracts. IEEE International Conference on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-9300-7
DOI :
10.1109/PLASMA.2005.359378
