Reactant State-Selection and Product Energy Disposal in Polyatomic Ion-Molecule Reactions

多原子离子分子反应中的反应物状态选择和产物能量处理

• 批准号: 9208902
• 负责人: Scott Anderson
• 金额: $ 33.2万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-01 至 1995-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9208902&HistoricalAwards=false
• 关键词: Reactant; State; Selection; Product; Energy

In this Experimental Physical Chemistry project, sponsored by the Chemistry Division, Prof. Anderson (SUNY Stonybrook) will develop a new and powerful method for preparing polyatomic ions in specific excited vibrational states. The effect of specific vibrational excitation on ion reactivity will then be studied by high resolution molecular beam methods. The primary question to be answered is, "in what range of molecular size and vibrational energy are vibrational mode effects important?" A clear answer to this question will determine the future course of research in this field for many years to come. %%% Bonds which hold molecules together are not rigid; they stretch and vibrate. A long sought goal of physical chemistry is to influence the course of chemical reactions by stimulating specific vibrations in order to facilitate breaking specific bonds. Prof. Anderson (SUNY Stonybrook) will develop a new method for doing this using simultaneous irradiation by lasers of two different wavelengths. This is important because the method can be applied to larger and more chemically relevant molecules than was previously possible.

在这个由化学系赞助的实验物理化学项目中，安德森教授(纽约州立大学斯托尼布鲁克分校)将开发一种新的、强大的方法来制备特定激发振动态的多原子离子。然后用高分辨分子束方法研究比振动激发对离子反应性的影响。要回答的主要问题是，“在什么分子尺寸和振动能量范围内，振动模式效应是重要的？”这个问题的明确答案将决定未来多年这一领域的研究方向。将分子结合在一起的键不是刚性的，它们可以伸展和振动。物理化学的一个长期追求的目标是通过刺激特定的振动来影响化学反应的过程，以促进特定的键断裂。安德森教授(纽约州立大学斯坦布鲁克分校)将开发一种新的方法，利用两种不同波长的激光同时照射来完成这一任务。这一点很重要，因为该方法可以应用于比以前更大、更具化学相关性的分子。