Charge Transfer and Energy Transfer in Passage of Low Energy Ions through Surfaces

许多重要的表面分析工具依赖于对离子通过固体传输的理解。该研究项目由分析和表面化学项目支持，旨在探索影响离子在具有不同化学和电子性质的固体中传输的基本散射和电荷转移过程。电子刺激离子从覆盖有金属和金属氧化物薄膜的衬底上解吸，将用于探测离子通过这些层的传输。离子角分布，产率和离子电荷交换过程将测量不同的薄膜覆盖层的范围。从这些研究中获得的理解将影响表面分析方法以及使用离子的各种材料加工技术。离子与固体表面的详细相互作用是本研究项目的重点。利用电子刺激离子通过精心控制的各种材料的薄膜解吸，离子-固体相互作用的基本原理将被探索。这些信息将有助于表面分析工具的发展，以及固体表面的离子处理。

A number of important surface analytical tools rely on an understanding of the transmission of ions through solids. This research project, supported by the Analytical and Surface Chemistry Program, is designed to explore the fundamental scattering and charge transfer processes that influence ion transport through solids having different chemical and electronic properties. Electron stimulated desorption of ions from substrates overlayed with thin films of metal and metal oxide will be used to probe the transmission of ions through these layers. Ion angular distributions, yields, and ion charge exchange processes will be measured for a range of different thin film overlayers. The understanding obtained from these studies will impact surface analysis methodology as well as various material processing technologies using ions. The detailed interactions of ions with solid surfaces are the focus of this research project. Using electron stimulated desorption of ions through carefully controlled thin films of various materials, the fundamentals of the ion-solid interaction will be probed. This information will be useful for the development of surface analytical tools, and in the ion processing of solid surfaces.