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Sputtering and reflection from a beryllium surface: effects of hydrogen isotope mass, impact position and surface binding energy

S. Shermukhamedov, L. Chen, Renat Nazmutdinov, Michael Probst2022年被引用 2Nuclear FusionIF 3出版社

Atomistic simulations with machine-learned potential energy functions are employed for understanding the mechanisms driving the sputtering of beryllium by low-energy deuterium and tritium atoms and the details of their retention on pristine beryllium surfaces. The interaction between hydrogen/deuterium/tritium and beryllium surfaces regarding erosion yields is investigated by molecular dynamics simulations. The erosion yields of both hydrogen isotopes are similar for the same kinetic energies. Concentrating on deuterium, its impact on specific surface sites is analyzed. Finally, analytical expressions are used to predict the energy spectra of sputtered atoms.

日本語訳

原子論的シミュレーションと機械学習ポテンシャルエネルギー関数を用いて、低エネルギー重水素および三重水素によるベリリウムのスパッタリングを駆動するメカニズムと、清浄なベリリウム表面におけるそれらの保持の詳細を理解する。水素/重水素/三重水素とベリリウム表面との相互作用を、スパッタリング収率に関して分子動力学シミュレーションにより調査する。両水素同位体のスパッタリング収率は、同じ運動エネルギーに対して同様である。重水素に焦点を当て、特定の表面サイトへのその影響を分析する。最後に、解析的表現を用いてスパッタリングされた原子のエネルギー分布を予測する。

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BerylliumHydrogen isotopes
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