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

9712538 Shapiro这是本科院校研究奖（RUI）。首席研究员将利用高性能计算机进行簇表面和离子表面相互作用的分子动力学模拟。具体主题将包括：在高能簇的影响下，固体目标中入射离子轨迹的演变；中高能簇轰击的后果（损伤、电子激发、溅射）；离子轰击和簇轰击后目标的簇发射，重点研究溅射事件统计与簇发射之间的关系；聚束光束解吸物质在质谱研究中的应用含能簇元穿越薄靶的电荷态性质低能和高能束束在微加工中的应用。研究将与加州理工学院的基础和应用物理小组以及奥赛的勒贝耶克小组合作进行。本研究的目标是扩展对团簇-表面相互作用的基本理解；指导今后的实验研究；让有前途的本科生参与研究。这项资助将支持在本科生为主的院校进行研究。这项研究涉及到原子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，材料磨损和理解表面的基本方面是重要的。这项研究将涉及本科生，并与加州理工学院和法国奥赛大学的研究小组合作。* * *

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. ***