Collision Dynamics of Free Radical Chemical Reactions

自由基化学反应的碰撞动力学

• 批准号: 8700970
• 负责人: Paul Dagdigian
• 金额: $ 31.46万
• 依托单位: Johns Hopkins 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: 1987-07-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700970&HistoricalAwards=false
• 关键词: Collision; Dynamics; Free; Radical; Chemical

The collision dynamics of reactions of small free radicals will be investigated by molecular beam scattering and laser fluorescence detection techniques. In reactions between two open-shell species, several potential energy surfaces arise in both the reactant and product channels. Of particular interest will be the effect these multiple reaction paths have on the product internal state distribution, especially the partitioning among fine-structure states of open-shell products. Special emphasis will be placed on the study of the prototypical O + NH reaction, for which two possible chemical pathways are available, namely the formation of OH + N and H + NO products. In addition, further investigation of the effect of initial spin-orbit level on chemical reactivity will be carried out for reactions of metastable Ba and other metal atoms. This work provides important insights into the reaction dynamics of open shell systems. Such reactions are essentially unexplored in the field of reaction dynamics because of experimental difficulties. Such unstable radicals may occur in flames, electrical discharges, and atmospheric processes. Information to be obtained in Dr. Dagdigian's research program can have an impact on understanding such systems and in some cases controlling chemical reactions.

小自由基反应的碰撞动力学将 用分子束散射和激光研究 荧光检测技术。 在两个反应之间 开壳层物种，几个势能面出现在 反应物和产物通道。 特别感兴趣的 将是这些多重反应路径对 产品内部状态分布，特别是 开壳层精细结构态间的分配 产品. 将特别强调研究 典型的O + NH反应，两种可能的化学反应 途径是可用的，即OH + N和H +的形成 没有产品。 此外，进一步研究 化学反应性的初始自旋轨道水平将是 用于亚稳态Ba和其它金属的反应 原子的 这项工作提供了重要的见解反应 开壳层系统动力学 这些反应基本上 在反应动力学领域尚未探索，因为 实验困难 这种不稳定的自由基可能发生在 火焰、放电和大气过程。 在Dagdigian博士的研究计划中获得的信息 可能会对理解这些系统产生影响， 控制化学反应。