Photodissociation and Multiphoton Ionization Probes of Main Group Metal Containing Clusters

Manfred M. Kappes博士得到了实验物理化学项目的资助，利用分子束和激光技术研究气态原子簇。这些测量将帮助我们了解系统行为的多样性，从液态的溶质行为到固态的绝缘体-导体电学行为。共线分子束光解和共振2光子电离光谱将用于获得以下方面的颗粒尺寸特定数据：(i)中性和带正电的主族元素簇，（ii）包含由碱壳包围的过渡金属的“碱溶剂化配合物”，以及（iii）混合金属/绝缘体簇。结果将包括：团簇形成和电离截面的实时测量，单分子离解速率，离解能，定量价和结构异构体分布以及异构体相互转化探针。

Dr. Manfred M. Kappes is supported by a grant from the Experimental Physical Chemistry Program to study clusters of atoms in the gaseous state using molecular beam and laser techniques. These measurements will help us to understand a diversity of system behaviors ranging from solute behavior in the liquid state to insulator-conductor electrical behavior in the solid state. Collinear molecular beam photodissociation and resonant 2-photon ionization spectroscopies will be used to obtain particle size specific data on (i) neutral and positively charged clusters of main group elements, on (ii) "alkali solvation complexes" containing transition metals surrounded by a shell of alkalis and on (iii) mixed metal/insulator clusters. Results will include: real time measurements of cluster formation and ionization cross-sections, unimolecular dissociation rates, dissociation energies, quantitative valence and structural isomer distributions and probes of isomer interconversion.