Alignment and Wave Packet Chemical Dynamics

实验物理化学项目支持科罗拉多大学博尔德分校的Stephen Leone教授继续研究排列和波包化学动力学。在这些实验中，他将制备处于特定激发态的原子，并探测两个碰撞激发态原子的轨道排列。从这些研究中，他将测量3-和4-（可能是5-）向量相关性。此外，他将利用超快激光技术研究双原子和多原子分子的波包聚焦和排列。在这里，他计划测量光电离截面与核间分离，选择与时间相关的光碎片途径，并研究流动分子的多原子波包动力学（例如锂三聚体分子中的伪旋转）。分子反应动力学领域的最终目标是控制和/或能够预测基本化学过程的结果。莱昂内提出的实验很容易满足这两个目标，并很好地引导我们进入下一个千年的化学，到那时，可以常规地操纵反应中形成的产物及其形成的状态。

The Experimental Physical Chemistry Program supports Prof. Stephen Leone of the University of Colorado at Boulder in his continuing studies of alignment and wave packet chemical dynamics. In these experiments, he will prepare atoms in specific excited states and probe the orbital alignment of two colliding excited state atoms. From these studies he will measure 3- and 4- (and possibly 5-) vector correlations. In addition, he will investigate wave packet focusing and alignment in diatomic and polyatomic molecules using ultrafast laser techniques. Here he plans to measure photoionization cross sections vs. internuclear separation, select time-dependent photofragment pathways, and study polyatomic wave packet dynamics of fluxional molecules (pseudorotation in lithium trimer molecules, e.g.). Ultimately the objective in the field of molecular reaction dynamics is to control and/or be able to predict the outcome of elementary chemical processes. The experiments proposed by Leone easily satisfy both objectives and nicely lead us into the chemistry of the next millenium when it may become possible to manipulate routinely which products are formed in a reaction and the states in which they are formed.