RUI: Molecular Dynamics Simulations of Cluster-Surface and Ion-Surface Interactions with High Performance Computers

9712538夏皮罗：这是本科生研究奖。首席研究员将利用高性能计算机对团簇-表面和离子-表面相互作用进行分子动力学模拟。具体专题将包括：高能集团碰撞后固体目标中离子入射轨迹的演变；中到高能集团轰击(损坏、电子激发、溅射)的后果；离子和集团轰击后目标的集团发射，重点是溅射事件的统计数据和集团发射之间的关系；团簇光束在质谱仪研究中用于解吸材料的作用；高能集团束穿过薄靶的电荷态性质；低能和高能团簇光束用于微机械加工。研究将与加州理工学院的基础和应用物理学小组以及奥赛的Le Beyec小组合作进行。这项研究的目标是扩大对星团-表面相互作用的基本理解，指导未来的实验研究，并让有前途的本科生参与研究。这笔助学金将支持一所以本科生为主的院校的研究。这项研究涉及原子团簇和带电离子撞击材料表面的计算机模拟。这些类型的相互作用对于材料加工、材料磨损和了解表面的基本方面都很重要。这项研究将涉及本科生，并将与法国加州理工学院和奥赛学院的团队合作。***

9712538 Shapiro This is an award for Research at Undergraduate Institutions (RUI). The principal investigator will be utilizing high performance computers to conduct molecular dynamics simulations of cluster-surface and ion-surface interactions. Specific topics will include: the evolution of incident ion trajectories in solid targets following the impact of very energetic clusters; the consequences of intermediate to high energy cluster bombardment (damage, electronic excitation, sputtering); cluster emission from targets following ion and cluster bombardment, with emphasis on the relationship between the statistics of sputtering events and cluster emission; the utility of cluster beams to desorb material for mass spectograph studies; the charge state properties of energetic cluster components traversing thin targets; the use of both low and high energy cluster beams for micromachining. Research will be carried out in collaboration with the Basic and Applied Physics Group at Caltech and with the Le Beyec Group at Orsay. The goals of the research are to extend the fundamental understanding of cluster-surface interactions; to guide future experimental research; and, to involve promising undergraduate students in research. %%% This grant will support research at a predominantly undergraduate institution. The research involves computer simulations of clusters of atoms and charged ions striking surfaces of materials. These type of interactions are important for materials processing, materials wear and for understanding fundamental aspects of surfaces. The research will involve undergraduate students and involves collaborations with groups at Caltech and Orsay in France. ***