Core Level Excitation and Relaxation in Molecules

汉森博士最近启动了一个项目，研究双原子、三原子和小多原子分子的内层电子激发，这些分子专门用于表征不同类型的化学键的性质。这个项目是世界上为数不多的系统研究这种性质的项目之一。汉森博士将使用布鲁克海文国家实验室国家同步辐射光源VUV环获得的可调谐和单色软X射线辐射，选择性地激发分子系统组成原子的K或L边缘区域的气相分子。有关初级激发过程和随后的一系列事件的信息将通过使用光电子能谱、质谱学和荧光光谱学技术获得，包括符合测量。这项研究的主要目标之一是建立俄歇衰变通道和碎裂通道之间的关联。从这些实验中获得的信息预计将对技术和各种学科有所裨益。

Dr. Hanson has recently initiated a program to investigate inner shell electron excitations of diatomic, triatomic, and small polyatomic molecules specifically chosen to enable the properties of different types of chemical bonds to be characterized. This program is one of the few in the world that is systemically studying such properties. Dr. Hanson will use tunable and monochromatic soft x-ray radiation obtained from the National Synchrotron Light Source VUV Ring at Brookhaven National Laboratory to excited gas phase molecules selectively in the region of the K or L edge of the constituent atoms of the molecular systems. Information about the primary excitation process and the subsequent series of events will be obtained by using the techniques of photoelectron spectroscopy, mass spectroscopy, and fluorescence spectroscopy, including coincidence measurements. One of the prime objectives of this research is establishing the correlation between Auger decay chananels and fragmentation channels. The information gained in these experiments is expected to be of benefit to technology and a variety of disciplines.