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

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