Numerical modeling of plasma plume evolution against ambient background gas in laser blow off experiments

Abstract

Two dimensional numerical modelling based on simplified hydrodynamic evolution for an expanding plasma plume (created by laser blow off) against an ambient background gas has been carried out. A comparison with experimental observations shows that these simulations capture most features of the plasma plume expansion. The plume location and other gross features are reproduced as per the experimental observation in quantitative detail. The plume shape evolution and its dependence on the ambient background gas are in good qualitative agreement with the experiment. This suggests that a simplified hydrodynamic expansion model is adequate for the description of plasma plume expansion. V C 2012 American Institute of Physics.

Numerical study of the effect of atomic mass of the ambient gas on the expansion and the lateral interactions of LBO plumes

“…Recently, we have simulated the lateral interactions between two spatially separated LBO plasma plumes in the presence of argon ambient [32]. In this approach, continuity, momentum and the energy equations of the ablated material are solved numerically in two dimensions (2D) [32,33]. In this numerical study, we showed the formation of shock waves and their interactions in argon ambient, which is in good agreement with experimental observations [32].…”

“…We modeled the time evolution of the plasma plume in the ambient gas using basic fluid equations that include mass, momentum and energy equations [32,33].…”