Abstract
This work is dedicated to investigating the ejecta production of Sn targets with varying surface roughnesses subjected to a Taylor-like shockwave loading. The shock breakout pressure in Sn up to 40 GPa is generated, inducing Sn to be melted upon release. In contrast with the ejecta measurement using piezoelectric probe, the Asay window technique has a large diagnostic range, extending the knowledge of ejecta formation close to the free surface. Through the use of the Asay window, the ejecta density-velocity distribution and total ejected mass with respect to the surface perturbation are acquired. It is found that these quantities of ejecta are mainly dominated by surface defects even though the shock produces a melted state. The experimental findings will improve the understanding of ejecta production on the shock-melted metal.
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