Intermolecular Potentials and Reaction Dynamics

在化学学部物理化学项目的这个项目中，宾夕法尼亚大学的Marsha Lester将使用各种光谱技术来表征范德华分子的分子间电位。受激发射泵浦和其他基于激光的技术将用于探测这些复合物的高激发能级，以便获得描述相互作用物质的势能表面的更全面的实验描述。我们还将研究含有开壳分子的配合物的光谱，以获取涉及自由基的碰撞过程的信息。团簇分子是气体分子凝聚成液体或固体时形成的中间物质。。对团簇结构和性质的研究有助于理解诸如化学反应性分子相遇、蛋白质折叠或表面催化活性等各种现象。这个项目旨在更全面地描述控制这类化学和物理过程的力量。

In this project in the Physical Chemistry Program of the Chemistry Division, Marsha Lester of the University of Pennsylvania will use various spectroscopic techniques to characterize the intermolecular potentials of van der Waals molecules. Stimulated emission pumping and other laser-based techniques will be used to probe highly excited energy levels of these complexes in order to obtain a fuller experimental description of the potential energy surface describing interacting species. The spectroscopy of complexes containing an open-shell molecule will also be studied for information about collisional processes involving free radicals. %%% Cluster molecules are the intermediate species formed when gaseous molecules condense to form liquids or solids. The study of the structure and properties of clusters is useful in understanding such diverse phenomena as the processes involved in chemically reactive molecular encounters, protein folding, or catalytic activity on surfaces. This project aims at more fully characterizing the forces which govern these sorts of chemical and physical processes.