(332d) Flash Simulation of Femtosecond Laser Ablation of the Cmsx-4 Ni-Based Superalloy Compared with in-Situ Pump-Probe Shadowgraphic Imaging

The dynamics of femtosecond pulsed laser ablation of the Ni based superalloy were simulated with 2-dimensional hydrodynamic simulation code, FLASH, using initial condition provided by 1-dimensional HYADES simulation run. The simulations yeilded excellent correspondence with the direct observations of the time-resolved pump-probe shadowgraphic images in experiment. The ablation event was accompanied by a jetting phenomenon that was observed in both pump-probe shadowgraphs and in the simulated results. In our poster, results from both direct observation and simulation will be presented.