Acquisition of an Ion Beam Accelerator for Materials Research

该合同将建立一个新的离子束设施， 解决材料研究中的问题，在大学的 宾夕法尼亚 一个独特的机会存在应用离子散射 各种令人兴奋的材料问题，其中一些涉及 新的实验，推进国家的最先进的离子 散射技术 这项研究的一个主要方面是 化学成分测定及其在近地层的变化 界面和薄膜中。 这个新的离子束设施 在广泛的研究计划，其中包括研究 掺杂剂在聚合物近表面区域的分布 基于电解质和导电聚合物，组成分布 穿过聚合物界面（焊接）和聚合物表面 （粘附、表面、改性）， 聚合物前体薄膜向硼基薄膜的转化 陶瓷、薄层（金属、硅化物和 陶瓷上的金属），金属表面上和附近的氢，以及 表面活性杂质的表面和界面研究 金属和陶瓷（界面脆化）。

This award establishes a new ion beam facility which will be used to address issues in materials research at the University of Pennsylvania. A unique opportunity exists to apply ion scattering to a variety of exciting materials problems, some of which involve new kinds of experiments which advance the state-of-the-art ion scattering techniques. A major aspect of this research is the determination of chemical composition and its variation near interfaces and in thin films. This new ion beam facility extends across a wide range of research programs, which include studies of the distribution of dopants in near-surface regions of polymer based electrolytes and conducting polymers, the composition profile across interfaces in polymers (welding) and at polymer surfaces (adhesion, surface, modification), the progression of the transformation of thin films of polymer precursors to boron-based ceramics, epitaxial growth of thin layers (metal, silicide, and metal on ceramic), hydrogen on and near the surface of metals, and surface and interface studies of surface active impurities in metals and ceramics (interface embrittlement).