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From groove to hillocks Atomic-scale simulations of swift heavy ion grazing impacts on CaF.sub.2./sub.
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SYSNO ASEP 0585127 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title From groove to hillocks Atomic-scale simulations of swift heavy ion grazing impacts on CaF2 Author(s) Rymzhanov, R.A. (RU)
Ćosić, M. (RS)
Medvedev, Nikita (FZU-D) ORCID, RID
Volkov, A.E. (RU)Number of authors 4 Article number 159310 Source Title Applied Surface Science. - : Elsevier - ISSN 0169-4332
Roč. 652, April (2024)Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords electronic excitation ; swift heavy ion ; grazing irradiation ; surface damage ; nanostructuring Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects LM2023068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LTT17015 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_027/0008215 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 001162017600001 EID SCOPUS 85182506100 DOI 10.1016/j.apsusc.2024.159310 Annotation Surface nanopatterning of CaF2 by swift heavy ions irradiation under oblique angles is studied with a combination of the event-by-event Monte Carlo particle transport model and molecular dynamics simulations. The model describes the electronic system excitation and energy transfer to the lattice followed by the atomic response. The approach allowed us to simulate the kinetics of the electronic ensemble excited by a grazing ion demonstrating that the presence of the surface does not reduce the energy of the lattice as expected. On the contrary, the track core temperature near the surface is slightly higher than in the bulk, because electrons reflected from the surface bring a part of the energy back to the core. The formation kinetics of entire grazing ion tracks is studied revealing the mechanisms of various surface nanostructures formation. The simulated structures are in reasonable agreement with the available experimental data. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2025
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