2026-10-13T12:18:49Z https://www.scidb.cn/oai

10.57760/sciencedb.03973 2022-10-21T09:18:19Z

2022-10-21 Molecular dynamics study of the hydrogen and helium interaction in tungsten doi:10.57760/sciencedb.03973 en Tungsten (W) and W alloys are regarded as the most promising candidates for plasma facing materials (PFMs), which will be widely used in the next generation of fusion reactors. However, blistering in W-PFM induced by extremely high fluxes of low-energy hydrogen (H) and helium (He) ions irradiation will seriously influence the plasma stability and limits the lifetime of PFM. We systematically investigate the interaction between H and He interaction in W using molecular dynamics (MD) calculations. The vacancy clusters can capture a large amount of H/He, and the H-He-vacancy clusters have much higher binding energy to He than to H. The binding energy of H-He-vacancy clusters to vacancy/W is positive, and H-He-vacancy clusters have strong trapping of W atoms and vacancies. He will strongly affect the H behavior in W, He atoms and He cluster will trap H atoms, thereby preventing the diffusion of H in W. Tungsten; Hydrogen; Helium; Molecular dynamics simulation Xiaochun Li Lu Tao Xindong Pan Yuping Xu Guojian Niu Qian Xu Haishan Zhou Guangnan Luo PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1016/j.nimb.2019.06.033 Science Data Bank