Alignment of the Angular Momenta of Products as a Probe of the Transition State of Chemical Reactions

产物角动量的排列作为化学反应过渡态的探针

• 批准号: 8619205
• 负责人: Richard Bersohn
• 金额: $ 34万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-05-15 至 1990-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8619205&HistoricalAwards=false
• 关键词: Alignment; Angular; Momenta; Products; Probe

This grant in Experimental Physical Chemistry supports the research of Professor Richard Bersohn in the field of photodissociation dynamics. The importance of photodissociation dynamics is that it enables us to understand how and how fast chemicals react. The research described is innovative, well supported theoretically, and may change the way other researchers think about the evolution of chemical reactions. The research involves the reaction A+BC=AB+C, which will be studied by using aligned atoms A to study the extent to which the alignment of an atom A will be propagated into alignment of the angular momenta of the products AB and C and the anisotropy of their relative velocity. Examples of A, to be studies include Hg, Cs, H and F. Examples of BC include hydrogen gas, HCl and iodine gas. The degree to which the alignment of the reactants is reflected in the products is a measure of the symmetry of the transition state and the lifetime of the transition state complex. Alignment of reactant atoms (unequal distribution over magnetic sublevels) is accomplished by excitation with linearly polarized light. This elementary reaction will be studied as well as its inverse process in which the anisotropic relative velocity of the reactants produces alignment of the products.

实验物理化学的这项资助支持以下研究： Richard Bersohn教授在光解离动力学领域的研究。 光解离动力学的重要性在于它使我们能够 了解化学反应的方式和速度。 所描述的研究是 创新，理论上得到很好的支持，并可能改变其他 研究人员思考化学反应的进化。的 研究涉及反应A+BC=AB+C，将通过以下方法进行研究： 使用排列的原子A来研究原子A的排列程度， 原子A将被传播到对准的角动量的 乘积AB和C及其相对速度的各向异性。 待研究的A的实例包括Hg、Cs、H和F。BC的例子 包括氢气、HCl和碘气体。 的程度 反应物的排列反映在产物中是衡量 过渡态的对称性和过渡寿命 国家综合体。 反应物原子的排列（在 磁子级）是通过线性激励来实现的 偏振光 这个基本反应也将被研究， 它的逆过程，其中各向异性的相对速度的 反应物产生产物的排列。