Presidential Young Investigator: Studies of Size Selected Clusters

总统青年研究员：规模选定集群的研究

• 批准号: 8957243
• 负责人: Mitchio Okumura
• 金额: $ 21.2万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8957243&HistoricalAwards=false
• 关键词: Presidential; Young; Investigator; Studies; Size

This research, part of the Experimental Physical Chemistry Program, is designed to develop and use new techniques for the study of size-selected ionic clusters. Insight will be obtained on the structure and dynamics of various clusters, the relationship to properties of the condensed phase, and the nature of ion-solvent interactions. Professor Okumura's research is supported by a Presidential Young Investigator (PYI) Award. The experiments will be accomplished on a sophisticated ion beam apparatus designed for infrared and optical spectroscopy of mass-selected ions. High efficiency ion counting techniques will be used to detect indirectly the absorption of laser radiation through tandem mass spectrometry. Time-resolved pump-probe experiments will be used to explore the dynamics of reactive processes within simple and complex (including solvated) clusters and in the condensed phase. Mass-selected clusters will also be deposited on appropriate substrates for structural probing at atomic resolution using scanning tunneling microscopy.

这项研究是实验物理化学计划的一部分，旨在开发和使用新技术来研究大小选择的离子簇。深入了解各种团簇的结构和动力学，与凝聚相性质的关系，以及离子-溶剂相互作用的本质。Okumura教授的研究获得了总统青年研究员奖（PYI）的支持。实验将在一个复杂的离子束装置上完成，该装置设计用于大量选择离子的红外和光学光谱。高效离子计数技术将被用于通过串联质谱间接检测激光辐射的吸收。时间分辨泵-探针实验将用于探索在简单和复杂（包括溶剂化）团簇和凝聚相中的反应过程的动力学。大量选择的簇也将沉积在适当的衬底上，使用扫描隧道显微镜进行原子分辨率的结构探测。