Vibrational Predissociation and Inelastic Collision Dynamics in Rare Gas/Halogen Systems

在本科院校研究（RUI）项目中， 化学物理化学实验大纲 Division，托马斯A.斯沃斯莫尔学院的斯蒂芬森将学习 货车德瓦耳斯团簇NeBr 2的光诱导动力学 和I2的离子对状态。 具体而言是 振动预解离动力学的NeBr 2产生在一个 超音速自由喷流的膨胀将通过荧光来检测 由探测激光诱导，以测试模型预测， 探索不同电子状态的影响。 在I2 研究了电子激发对转动和 振动能量转移概率和途径将是 研究单次碰撞状态对状态碰撞动力学 实验 %%% 制定一个全面框架的一个关键组成部分， 理解化学反应的关键在于阐明 当两个原子或分子在碰撞过程中相互作用时所涉及的。 这里对原子-硅藻系统进行的研究很简单 足以让它们在理论上被理解和建模， 从而为理解更复杂的 系统. 这些知识对于理解各种 气相动力学过程，如大气 反应，燃烧，甚至材料的合成， 化学气相沉积

In this Research in Undergraduate Institutions (RUI) project in the Experimental Physical Chemistry Program of the Chemistry Division, Thomas A. Stephenson of Swarthmore College will study the photo-induced dynamics of the van der Waals cluster NeBr2 and of the ion-pair states of I2. Specifically, the vibrational predissociation dynamics of NeBr2 produced in a supersonic free jet expansion will be examined via fluorescence induced by a probe laser to test model predictions and to explore the effect of different electronic states. In the I2 studies the effect of electronic excitation on rotational and vibrational energy transfer probabilities and pathways will be studied in single-collision state-to-state collision dynamics experiments. %%% A crucial component in developing a comprehensive framework for understanding chemical reactions is to elucidate the forces involved as two atoms or molecules interact during collisions. The studies undertaken here on atom-diatom systems are simple enough that they can be understood and modeled theoretically, thus providing the groundwork for understanding more complex systems. Such knowledge is crucial for understanding all sorts of gas-phase dynamical processes, such as atmospheric reactions, combustion, and even the synthesis of materials by chemical vapor deposition.