CC BY
13P-II
New prospects in multiphysics modeling and simulations of matter dynamics of laser induced solid-to-plasma phase transitions
V. Dimitriou1
1Hellenic Mediterranean University- Greece, Institute of Plasma Physics & Lasers - IPPL, Rethymnon, Greece
Femtosecond and nanosecond laser pulses are used for matter excitation. The common numerical approximation schemes, for the simulation of the excited mater dynamics, are analyzed and presented. Emphasis is given on their multiphysics character and their ability to include the phase transitions. The differences of the approximations of laser induced energy on solid targets by ns and fs laser pulses, are discussed. The cases of interest, where a global numerical scheme is able to monitor the matter dynamics, from ultrashort to nanoscale time ranges, are highlighted. The new prospects in multiphysics modeling and simulations of matter dynamics, of laser induced solid-to-plasma phase transitions, are discussed, focused on combinatorial models, able to simulate the spatiotemporal scales of interest. Representative models lying on various numerical approximation schemes, combined with macroscopic models, based on the Finite Element Method (FEM), are presented. The FEM models may offer clear insights into the volume and on the boundaries of the target, and realistically represent the dynamic response mechanisms that follow ultrashort laser irradiation. Representative applications, that may be used to monitor and detect the structural and mechanical characteristics of solids, are demonstrated.
