Laser-induced plasma expansion:theoretical and experimental aspects

摘要

Theoretical and experimental efforts to describe the expansion of laser-induced plasma plume are reviewed.Particular attention has been devoted to a comparison between experimental and theoretical time of flight (TOP) profiles.The theoretical results obtained by inserting plasma kinetics in one-dimensional fluid-dynamic code show that chemical processes strongly influence the fluid dynamic expansion.Moreover fluid-dynamics codes based on both Navier-Stokes and DSMC models,which in addition include the possibility of different temperatures for electrons and heavy particles,are discussed.