Characteristics of Plasma Shock Waves Generated in the PulsedLaser Ablation Process

Abstract

We modify the Sedov theory to describe plasma shock waves generatedin a pulsed laser ablating process. We also study the propagationcharacteristics of plasma shock waves during the preparation processof functional thin films deposited by a pulsed laser. In particular,we discuss in detail the temporal behaviour of energy causing thedifference of the propagation characteristics between the plasmashock wave and the ideal shock wave in the point explosion model.Under the same experimental conditions, the theoretical resultscalculated with our modified Sedov theory are in good agreement withthe existing experimental data.