Presidential Young Investigator Award/Chemical Dynamics of Highly Excited Molecules

在化学学部物理化学计划的这个项目中，Polik将使用分子束技术和高分辨率分散荧光光谱研究高激发分子的化学动力学。将测定一系列醛类化合物的振动分辨分散荧光光谱，并分析其对分子内能量流的影响。将研究分散荧光光谱的压力依赖性，以显示偶极相互作用在分子间能量转移中的作用。分子束和高分辨率分散荧光技术将用于制备和观察分子的激发态，以了解化学反应的微观细节。这些实验的结果将用于测试不同的反应和非反应碰撞动力学模型。Polik博士的研究是总统青年研究者奖（PYI）计划的一部分。

In this project in the Physical Chemistry Program of the Chemistry Division, Polik will study the chemical dynamics of highly excited molecules using molecular beam techniques and high-resolution dispersed fluorescence spectroscopy. Rovibrationally resolved dispersed fluorescence spectra of a series of aldehydes will be determined, and the implications for intramolecular energy flow will be analyzed. The pressure dependence of dispersed fluorescence spectra will be studied to show the role of dipolar interactions in intermolecular energy transfer. %%% Molecular-beam and high resolution dispersed fluorescence techniques will be used to prepare and observe excited states of molecules in order to understand the microscopic details of chemical reactivity. The results of these experiments will be used to test different models of reactive and non-reactive collision dynamics. Dr. Polik's studies are part of the Presidential Young Investigator Award (PYI) Program.