Electron-Ion Recombination Chemistry: Determination of Fragmentation and Product Distributions

在这个由化学部实验物理化学项目资助的项目中，亚当斯将开发一种独立的技术来确定解离电子-离子重组速率和产物分布。该方法旨在克服以往流动余辉和储存环实验结果相互矛盾的困难。在对熟知的系统进行初步测试后，该技术将应用于那些在文献中报告了有争议结果的系统。将研究解离重组起主要作用的新体系。星际和彗星气体的分子，以及地球上层和下层大气的分子，不断地经历解离电离，然后再结合。通过实验确定了复合速率和解离产物的分布，为理论建模提供了依据。确定这些参数的传统方法常常给出不同的结果。该项目旨在开发一种新方法，以生成可靠的数据，用于测试现有理论和开发新理论。这项工作将在研究生和本科生以及博士后研究助理的协助下进行。在这个由化学部实验物理化学项目资助的项目中，亚当斯将开发一种独立的技术来确定解离电子-离子重组速率和产物分布。该方法旨在克服以往流动余辉和储存环实验结果相互矛盾的困难。在对熟知的系统进行初步测试后，该技术将应用于那些在文献中报告了有争议结果的系统。将研究解离重组起主要作用的新体系。来自地球上层和下层大气的星际气体和彗星气体分子不断地经历解离电离，然后再结合。通过实验确定了复合速率和解离产物的分布，为理论建模提供了依据。确定这些参数的传统方法常常给出不同的结果。该项目旨在开发一种新方法，以生成可靠的数据，用于测试现有理论和开发新理论。这项工作将在研究生和本科生以及博士后研究助理的协助下进行。

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Adams will develop an independent technique to determine dissociative electron-ion recombination rates and product distributions. The method is designed to circumvent difficulties that have caused contradictory results from previous studies with flowing-afterglow and storage ring experiments. After initial tests on well understood systems, the technique will be applied to those for which controversial results have been reported in the literature. New systems where dissociative recombination plays a major role will be investigated.The molecules of interstellar and cometary gases, and of the earth's upper as well as lower atmosphere, continually undergo dissociative ionization followed by recombination. The rates of recombination as well distributions of the dissociation products are experimentally determined and provide the basis for theoretical modeling. Conventional methods for determining these parameters have often given disparate results. This project is designed to develop a new method to generate reliable data for testing of existing theories and the development of new ones. The work will be performed with the assistance of graduate and undergraduate students and postdoctoral research associates.In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Adams will develop an independent technique to determine dissociative electron-ion recombination rates and product distributions. The method is designed to circumvent difficulties that have caused contradictory results from previous studies with flowing-afterglow and storage ring experiments. After initial tests on well understood systems, the technique will be applied to those for which controversial results have been reported in the literature. New systems where dissociative recombination plays a major role will be investigated.The molecules of interstellar and cometary gases, of the earth's upper as well as lower atmosphere, continually undergo dissociative ionization followed by recombination. The rates of recombination as well distributions of the dissociation products are experimentally determined and provide the basis for theoretical modeling. Conventional methods for determining these parameters have often given disparate results. This project is designed to develop a new method to generate reliable data for testing of existing theories and the development of new ones. The work will be performed with the assistance of graduate and undergraduate students, and postdoctoral research associates.