Abstract
The article presents experimental study results of processes in the near-surface region of flat samples (Cu, Al, graphite, PTFE) under irradiation with powerful vacuum ultraviolet (VUV) radiation generated by pulsed high-current discharges. The typical exposure time was ≈ 3–50 μs, and the radiation energy in the vacuum-ultraviolet spectrum range was ≈ 1–2 kJ. The main characteristics of the processes were registered on Schlieren photographs and interferograms. The dynamics of vapor-plasma flows formation and development during VUV ablation were studied depending on the spectral composition and intensity of the radiation flux on the surface. The study is relevant for space and plasma technology, development of microelectronic elements, and fundamental research on the interaction of extreme radiation with matter.
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The work was supported by the Russian Foundation for Basic Research and the State Corporation “Rosatom”, project no. 20-21-00087, and was performed at large-scale research facilities “Beam-M” of Bauman Moscow State Technical University (BMSTU).
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Pavlov, A.V., Protasov, Y.Y., Shchepanyuk, T.S. et al. Features of Surface Ablation under Exposure to High-Brightness VUV Radiation from Pulsed High-Current Discharges. High Energy Chem 57 (Suppl 1), S145–S149 (2023). https://doi.org/10.1134/S0018143923070317
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DOI: https://doi.org/10.1134/S0018143923070317