2011/05/02 by W. Hao, Wenyuan Hao, W. T. Geng +2
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Fusion materials and technologies #Materials Science (cond-mat.mtrl-sci) #Nuclear Materials and Properties #Quantum, superfluid, helium dynamics #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1105.0458
7 pages, three figures
arxiv created 2011/05/02 · openalex publication_date 2011/05/02 · arxiv updated 2011/05/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Our first-principles density functional theory calculations suggest that the rare earth element, Ce, has a stronger attraction (-1.31eV) to He than He-He (-1.18eV) in bcc Fe. Consequently, the mobile He atoms could be pinned to Ce, and hence a reduced merging of He clusters. Moreover, we find that the segregated Ce layer at the He bubble surface presents an energy barrier of 0.33 eV to the upcoming He atom and thus slows down the bubble growth.