Direct IR Laser and Double Resonance Absorption Spectroscopy in Split Supersonic Jets: Vibrational Dynamics of Novel Molecular Clusters

分裂超音速射流中的直接红外激光和双共振吸收光谱：新型分子簇的振动动力学

• 批准号: 9520297
• 负责人: David Nesbitt
• 金额: $ 43.5万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9520297&HistoricalAwards=false
• 关键词: Direct; IR; Laser; Double; Resonance

In this project in the Experimental Physical Chemistry Program, David Nesbitt of the University of Colorado will investigate the potential energy surfaces of van der Waals molecules using laser based spectroscopic methods. These studies will concentrate on hydrogen bonded species and multiple rare-gas cluster systems including HF, HCL, and water. Additional work will focus on the production and infrared characterization of radical and radical complexes of important atmospheric components such as the peroxyl radical, and the spectroscopy and dynamics of prototypical heavy-light-heavy reactive systems such as Cl-HCl and F-HF. High resolution near infrared light will be used to state-select a cluster which will be subsequently photolyzed in studies involving reactive and inelastic scattering. These systems include DCl-HCl and XH-NNO (ONN), and provide control over cluster size, quantum state, and reactant approach geometry. The determination of potential energy surfaces provides the information needed to understand and control the course of a chemical reaction. Professor Nesbitt's studies will provide quantum state specificity and a specific reactant approach geometry for an important class of chemical reactions known as heavy-light-heavy reactions. The information obtained from this work will be an important step towards using lasers to control of the outcome of chemical reactions.

在这个实验物理化学项目中，大卫 科罗拉多大学的内斯特朗将研究 货车德瓦耳斯分子的能量表面， 光谱方法 这些研究将集中在氢键 物种和多个稀有气体集群系统，包括HF，HCL， 水 额外的工作将集中在生产和红外 重要的自由基和自由基络合物的表征 大气成分，如过氧自由基，和光谱 和原型重-轻-重反应系统的动力学， Cl-HCl和F-HF。 高分辨率近红外光将用于 状态-选择随后将在研究中光解的簇 包括反应性和非弹性散射。 这些系统包括 DCl-HCl和XH-NNO（ONN），并提供对簇大小、量子 状态和反应物接近几何形状。 势能面的确定提供了 需要了解和控制化学反应的过程。 Nesperson教授的研究将提供量子态的特异性和 一类重要化学品特定反应物近似几何 重-轻-重反应。 获得的信息 这项工作将是使用激光控制的重要一步 化学反应的结果。