Electronic energy loss processes for slow H and He ions in metals and insulators: new insights

2013/11/06 by Dominik Goebl, D. Goebl, Dietmar Roth +5
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Nuclear Physics and Applications #Semiconductor materials and devices #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.1311.1428

arxiv created 2013/11/06 · openalex publication_date 2013/11/06 · arxiv updated 2013/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Electronic stopping of H and He ions in metals and insulators is analyzed at velocities below 0.2 atomic units, i.e. below 1 keV for H and below 4 keV for He. In metals, stopping of H ions is affected by d-electrons only when the d-band extends up to the Fermi energy; for He ions, also d-bands well below the Fermi energy contribute significantly to electronic stopping. In insulators, the low threshold velocity for electronic stopping cannot be explained by electron-hole pair excitation; charge exchange cycles, however, may govern the threshold behavior of electronic stopping in ionic crystals.

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