Inner-Shell Electron Spectroscopy of Small Molecules

实验物理化学计划支持T。达拉托马斯 俄勒冈州州立大学继续研究内壳 小分子光电子能谱 他将专注于 碳1s电子的高分辨率光谱，使用 高级光源（ALS）的高分辨率电子光谱仪 在劳伦斯伯克利实验室 最终目标是发展一个更好的 理解电离能与 反应性和其他化学性质，以制定程序， 分配基团电负性，以更好地理解 对电负性有贡献，并检验了 预测和理解电离能。 这些课题是当前电子领域研究的前沿课题。 光谱学，最近变得非常热门，因为 第三代同步辐射源的可用性。 而 在高亮度下研究了许多分子系统， 同步加速器，几乎所有以前发表的其他研究 研究人员进行了示范研究。 这些研究走得很远 除此之外。 X射线光谱学的美妙之处在于 原子特异性，甚至在术语的"化学位点"意义上。 为 化学上重要的化合物，这需要极高的 分辨率可在同步加速器源，将被利用， 这些研究。 光电子能谱和俄歇能谱是通过 迄今为止最重要和最广泛使用的表面分析技术， 这些领域的工业和基础研究仍然至关重要， 重要.

The Experimental Physical Chemistry Program supports T. Darrah Thomas of Oregon State University in his continuing studies on inner-shell photoelectron spectroscopy of small molecules. He will focus on high-resolution spectroscopy of carbon 1s electrons, using the high-resolution electron spectrometer at the Advanced Light Source (ALS) at Lawrence Berkeley Lab. The ultimate goals are to develop a better understanding of the relationship between ionization energies and reactivity and other chemical properties, to develop procedures for assigning group electronegativities, to better understand the factors that contribute to electronegativity and to test current theories for predicting and understanding ionization energies. These topics are at the forefront of current research in electron spectroscopy and have recently become extremely topical because of the availability of third-generation synchrotron radiation sources. While there have been many molecular systems studied at high-brightness synchrotrons, almost all of the previously published studies of other investigators have been demonstration studies. These studies go far beyond that. The beauty of x-ray spectroscopy is that it can be atom-specific, even in the `chemical site` sense of the term. For chemically important compounds, this requires the extremely high resolution available in the synchrotron sources that will be exploited in these studies. Photoelectron spectroscopy and Auger spectroscopy are by far the most important and widely used techniques for surface analysis in industry and fundamental research in these areas remains vitally important.