Abstract In this study, we explore the interaction of electron wind force (EWF) with defects originating from ion irradiation in-situ inside a transmission electron microscope. Nanocrystalline gold specimens were self-ion irradiated to a dose of 5 x 1015 ions/cm2 (45 displacement per atom) to generate a high density of displacement damage. We also developed a molecular dynamics simulation model to understand the associated atomic scale mechanisms. Both experiments and simulations show that the EWF can impart significant defect mobility even at low temperatures, resulting in the migration and elimination of defects in a few minutes. We propose that the EWF interacts with defects to create highly glissile Shockley partial dislocations, which makes the fast and low temperature defect annihilation possible.

中文翻译：

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重离子辐照多晶金缺陷消除

摘要 在这项研究中，我们探索了电子风力 (EWF) 与透射电子显微镜内原位离子辐照缺陷的相互作用。纳米晶金样品经过自离子照射，剂量为 5 x 1015 离子/cm2（每个原子 45 个位移），以产生高密度的位移损伤。我们还开发了一个分子动力学模拟模型来了解相关的原子尺度机制。实验和模拟都表明，即使在低温下，EWF 也可以赋予显着的缺陷迁移率，从而在几分钟内实现缺陷的迁移和消除。我们建议 EWF 与缺陷相互作用以产生高度滑动的肖克利部分位错，这使得快速和低温的缺陷湮灭成为可能。