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Article

Effect of the Surface Roughness of Tungsten on the Sputtering Yield under Helium Irradiation: A Molecular Dynamics Study

Department of Nuclear Engineering, Kyung Hee University, Yongin-si 17104, Korea
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Author to whom correspondence should be addressed.
Academic Editors: Ayrat Nazarov and Michael Störmer
Metals 2021, 11(10), 1532; https://doi.org/10.3390/met11101532
Received: 30 July 2021 / Revised: 15 September 2021 / Accepted: 24 September 2021 / Published: 26 September 2021
(This article belongs to the Special Issue Modeling and Microstructure Evolution of Solid State Materials)
Sputtering in a divertor is one of the key phenomena that affects plasma purity and temperature. In previous experimental studies, the term sputtering yield has been used to refer to net sputtering yield, which is defined as the difference between primary sputtering yield and re-deposition. Our simulations using molecular dynamics have confirmed that both primary sputtering yield and re-deposition are affected by particle curvature. In this study, the effect of particle curvature on the net sputtering yield was quantitatively evaluated, the results were compared to existing experimental studies, and the discrepancies with experimental results were discussed. View Full-Text
Keywords: tungsten; fusion reactor divertor; molecular dynamics tungsten; fusion reactor divertor; molecular dynamics
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MDPI and ACS Style

Kim, H.; Kwon, J.; Chang, K. Effect of the Surface Roughness of Tungsten on the Sputtering Yield under Helium Irradiation: A Molecular Dynamics Study. Metals 2021, 11, 1532. https://doi.org/10.3390/met11101532

AMA Style

Kim H, Kwon J, Chang K. Effect of the Surface Roughness of Tungsten on the Sputtering Yield under Helium Irradiation: A Molecular Dynamics Study. Metals. 2021; 11(10):1532. https://doi.org/10.3390/met11101532

Chicago/Turabian Style

Kim, Hyeonho, Joongseok Kwon, and Kunok Chang. 2021. "Effect of the Surface Roughness of Tungsten on the Sputtering Yield under Helium Irradiation: A Molecular Dynamics Study" Metals 11, no. 10: 1532. https://doi.org/10.3390/met11101532

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