Surface Chemistry Studies with Ion Beams and Lasers

该研究项目由分析和表面化学计划支持，研究高能离子和光子与固体表面相互作用的基本方面。宾夕法尼亚州立大学的首席研究员和他的团队正在研究离子束与有机薄膜和冰基质中的生物样品的相互作用。将状态分辨实验测量与经典轨迹计算模型相结合，提供了离子表面碰撞时固体表面能量沉积的信息。样品表面的分子特异性成像是这项工作的目标。这些研究的结果将影响分析质谱、聚变反应堆设计、生物技术和电子材料的活性离子蚀刻。利用高能原子束和簇离子束进行表面分析是本项目支持的研究重点。在分析和表面化学项目的资助下，Winograd教授和他的同事正在研究离子-固体表面相互作用的基本方面。这项工作的重点是在冰基质中高能簇离子与生物样品的相互作用，目的是发展生物材料的分子比表面分析。

ABSTRACTCHE-0244960Winograd/Pennsylvania StateThis research project, supported by the Analytical and Surface Chemistry Program, addresses fundamental aspects of the interaction of energetic ions and photons with solid surfaces. The Principal Investigator and his group at the Pennsylvania State University are examining the interactions of cluster ion beams with organic thin films and with biological samples in an ice matrix. A combination of state resolved experimental measurement with classical trajectory calculational modeling, provides information about the deposition of energy in the solid surface upon ion-surface collision. Molecule-specific imaging of the sample surface is the goal of this work. Results from these studies will impact analytical mass spectrometry, fusion reactor design, biotechnology, and reactive ion etching of electronic materials. Surface analysis using high energy atomic and cluster ion beams is the focus of the research supported in this project. With the funding of the Analytical and Surface Chemistry Program, Professor Winograd and his coworkers are examining the fundamental aspects of ion-solid surface interactions. The particular focus of this work is on the interaction of energetic cluster ions with biological samples in an ice matrix, with the goal of developing molecule specific surface analysis of biological materials.