![]() Bäuerle, Laser Processing and Chemistry, 4th ed. This effort constitutes a continued development toward a predictive model of ablation plume dynamics and chemistry for various materials in extreme environments.ĭ. The possible physical mechanisms responsible for this discrepancy are discussed. The largest disagreement is observed in the case of a polished aluminum target, where the chaotic inner plume features seen in the experimental images are not observed in the model. The shape and expansion rate of an outer air plume region are found to be in good agreement for both carbon and aluminum, as are the inner material plume dynamics for carbon ablation. Spatio-temporal emission maps and plume expansion velocities from experimental measurements are compared with the model predictions, including synthetic emission maps. In this work, we attempt to explore this correlation using a 2D radiation hydrodynamics model to study the dependence of internal plume structure formation on the ablation material. However, the details of this relation are currently not well understood. Recently acquired high-resolution images of nanosecond laser ablation plumes suggest a strong correlation between the internal plume structure and the type of material being ablated. Knight: Funding acquisition (equal) Project administration (equal) Resources (equal) Supervision (equal). Radousky: Funding acquisition (equal) Project administration (equal) Resources (equal) Supervision (equal). Davide Curreli: Funding acquisition (equal) Project administration (equal) Resources (equal) Supervision (equal).Rousso: Investigation (supporting) Writing – original draft (supporting) Writing – review & editing (supporting). Keller: Formal analysis (supporting) Methodology (supporting) Software (supporting) Writing – original draft (supporting). Crowhurst: Conceptualization (equal) Formal analysis (equal) Investigation (lead) Methodology (equal) Validation (equal) Visualization (equal) Writing – original draft (supporting) Writing – review & editing (supporting). Mikhail Finko: Conceptualization (equal) Formal analysis (equal) Methodology (equal) Software (lead) Validation (equal) Visualization (equal) Writing – original draft (lead) Writing – review & editing (lead).
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