Mode-Selective Differential Scattering as a Probe of Polyatomic Ion Reaction Dynamics

模式选择性微分散射作为多原子离子反应动力学的探针

• 批准号: 9807625
• 负责人: Scott Anderson
• 金额: $ 35.61万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-15 至 2001-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807625&HistoricalAwards=false
• 关键词: Mode; Selective; Differential; Scattering; Probe

Anderson is supported by the Experimental Physical Chemistry Program to continue his studies of reactions of small polyatomic ions containing from three to about fifteen atoms by mode-selected differential scattering methods, using a high-resolution guided-ion beam scattering instrument. The goal is both to probe detailed reaction mechanisms for these complex systems, and to provide insight into the effects of different types of reactant nuclear motion on chemical reactivity. Mass-analyzed threshold ionization (MATI) and multiphoton ionization (MPI) will be used to develop routes to prepare vibrationally mode-selected reactant ions, and then to carry out experiments with these ions. The information gained from these studies will advance the understanding of reaction dynamics in complex systems, and thus may aid in developing approaches to optimize chemical reactions. When ions and molecules collide with one another, changes in their chemical bonding arrangement can occur under certain circumstances. These studies seek to improve the detailed understanding of how internal molecular motions affect the outcomes of collisions in which bonding changes occur. Such knowledge is central to attaining useful insights about the nature of chemical change.

安德森是由实验物理化学计划的支持， 继续研究小的多原子离子的反应， 从三个到大约十五个原子，通过模式选择差分 散射方法，使用高分辨率引导离子束散射 仪器 目的是探索详细的反应机制， 这些复杂的系统，并提供洞察的影响， 不同类型的反应物核运动对化学反应性的影响。 质量分析阈值电离（MATI）和多光子电离 (MPI)将被用来开发路线， 模式选择的反应物离子，然后用这些进行实验 离子。 从这些研究中获得的信息将推动 了解复杂系统中的反应动力学，从而有助于 来优化化学反应。 当离子和分子相互碰撞时， 在某些情况下可以发生化学键合排列。 这些研究试图提高内部如何详细了解 分子运动会影响碰撞的结果， 发生变化。 这些知识对于获得有用的见解至关重要 化学变化的本质