Laser ablation propulsion and hypervelocity impacts are developing areas of research. This work aims to understand the contribution of different laser and target parameters to the momentum transfer during laser ablation through ballistic
pendulum experiments. The data presented are the results of three experimental campaigns using different pulse durations, wavelengths and energies. The momentum was calculated from Photonic Doppler Velocimetry (PDV) and pendulum deflection measurements, while the contribution of the ejecta was estimated by camera imaging. The experimental results were complemented by 1D simulations of the momentum and ejecta contribution using the ESTHER code.
In this study, we investigate the conversion of femtosecond laser energy deposition from plasma into a shockwave in ambient air. The experiments are carried out using a 380fs pulsed laser at 1.03μm, with laser intensities below the filamentation threshold. The measurements of this dynamic phenomenon are carried out with the help of a time-resolved transmission microscope, and the pressure and temperature space-time evolution are evaluated using a theoretical model. In our conditions we generate shockwaves with initial pressure loading in the range of GPa and maximum propagation velocity in the order of a few km/s.
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