High-velocity dust impacts in plasma facing materials: Insights from molecular dynamics simulations

Conducted MD simulations to analyze the interaction of W dust with W walls at varying velocities (1000-4500 m/s), benchmarked against experimental data. Observed that increased impact velocities enhance dust absorption by the wall and escalate the ejection of wall material. Demonstrated excellent agreement between MD results and experimental findings, affirming the reliability of the simulation approach. Proposed theoretical models to extrapolate the results, facilitating broader applicability and understanding of dust-wall interactions in PFMs.