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Highly charged ion induced nanostructures at surfaces by strong electronic excitations
Progress in Surface Science ( IF 6.4 ) Pub Date : 2015-08-01 , DOI: 10.1016/j.progsurf.2015.06.001
Richard A. Wilhelm , Ayman S. El-Said , Franciszek Krok , René Heller , Elisabeth Gruber , Friedrich Aumayr , Stefan Facsko

Abstract Nanostructure formation by single slow highly charged ion impacts can be associated with high density of electronic excitations at the impact points of the ions. Experimental results show that depending on the target material these electronic excitations may lead to very large desorption yields in the order of a few 1000 atoms per ion or the formation of nanohillocks at the impact site. Even in ultra-thin insulating membranes the formation of nanometer sized pores is observed after ion impact. In this paper, we show recent results on nanostructure formation by highly charged ions and compare them to structures and defects observed after intense electron and light ion irradiation of ionic crystals and graphene. Additional data on energy loss, charge exchange and secondary electron emission of highly charged ions clearly show that the ion charge dominates the defect formation at the surface.

中文翻译:

通过强电子激发在表面产生高电荷离子诱导纳米结构

摘要 单次慢速高电荷离子撞击形成的纳米结构可能与离子撞击点处的高密度电子激发有关。实验结果表明,根据目标材料,这些电子激发可能导致非常大的解吸产率,每个离子大约有 1000 个原子,或者在撞击点形成纳米小丘。即使在超薄绝缘膜中,也可以在离子撞击后观察到纳米级孔的形成。在本文中,我们展示了由高电荷离子形成纳米结构的最新结果,并将它们与离子晶体和石墨烯的强电子和光离子照射后观察到的结构和缺陷进行了比较。关于能量损失的附加数据,
更新日期:2015-08-01
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