State-Selected Ion Reactions on Surfaces

这项资助是在一般领域的分析和表面 化学和化学反应动力学领域 在表面。 纽约大学的丹尼斯·雅各布斯教授 圣母大学将研究低能分子氧的相互作用 和氮氧化物离子， 银、硅和砷化镓。 离子的作用 反应的初始能量和散射几何 将确定离子与表面之间的距离。 这项工作将 对理解半导体的加工过程很重要 器械材料。 原离子的振动和转动态分辨 将通过共振增强多光子 电离方法 这将使生产超高温 离子的散射和反应跨越表面的 银、硅和砷化镓。 微观动力学 这些反应将被确定为离子的函数 初始条件。

This grant is in the general field of analytical and surface chemistry and in the subfield of dynamics of chemical reactions at surfaces. Professor Dennis Jacobs of the University of Notre Dame will study the interaction of low energy dioxygen and nitrogen oxide ions with clean single crystal surfaces of silver, silicon and gallium arsenide. The roles of the ion initial energy and geometry of the scattering on the reaction of the ion with the surface will be determined. This work will be important in understanding the processing of semiconductor materials for devices. Vibrational and rotational state resolution of the primary ion will be accomplished with resonance enhanced multiphoton ionization methods. This will allow production of hyperthermal ions for scattering and reaction across the surfaces of the silver, silicon and gallium arsenide. Microscopic dynamics of these reactions will be determined as a function of the ion initial conditions.