Molecular Dissociation Dynamics on Selected Regions of Excited Electronic Potential Energy Surfaces

劳里J.巴特勒是由赠款的支持， 物理化学实验课程的学习时间 分子解离过程的演变， 电子激发分子这些测量将允许 为了更深入地了解分子 分解并形成各种亚分子部分， 化学物质与其他系统发生反应。 最初的实验使用偏振发射光谱， 它测量光子的波长和偏振 在解离过程中发射，以探测原子核的变化， 沿沿着圆锥形交叉口处的力引起的动力学 解离途径巴特勒教授专注于确定 解离动力学和分支的变化 在能量允许的碎片化产物之间， 1)沿着沿着 解离途径，2）选择的激发 振动激活分子的电子 解离状态，允许进入激发电位 表面以外的弗兰克-康登地区，和3）的变化， 两个离解电子之间非绝热耦合 当一个振动激发的分子被提升到 游离表面

Dr. Laurie J. Butler is supported by a grant from the Experimental Physical Chemistry Program to study the time evolution of molecular dissociation processes from electronically excited molecules. These measurements will allow for an enhanced detailed understanding of how molecules decompose and form various sub-molecular moieties or of how chemical species react with other systems. The initial experiments use polarized emission spectroscopy, which measures the wavelength and polarization of the photons emitted during dissociation, to probe the change in the nuclear dynamics induced by forces at a conical intersecton along the dissociative pathway. Professor Butler focuses on determining the change in the dissociation dynamics and the branching between energetically allowed fragmentation products induced by 1) the presence of a conical intersection along the dissociation pathway, 2) the excitation of a selected vibrationally activated molecule to the electronically dissociative state, allowing access to the excited potential surface beyond the Franck-Condon region, and 3) the change in the nonadiabatic coupling between two dissociative electronic states when a vibrationally excited molecule is promoted to the dissociative surface.