The Dynamical Aspects of the Interaction of Hydrogen with Simple Metal Surfaces

氢与简单金属表面的相互作用所体现的现象包含了表面科学中的大多数基本概念，这些系统在理论上是容易处理的。由于几乎完全没有实验数据，基于广泛计算程序的过多理论预测没有受到挑战或没有得到证实。实验技术现在已经发展到可以探索氢与简单金属表面相互作用的动力学和静力学的阶段。氢气的活化吸附和状态选择性检测将被用来测量势能面的形状，从而使氢气的解离成为一个活化的过程。角分辨非弹性电子散射将被用来测量表面声子谱的修正和由吸附H的不同相引起的表面等离子体激元色散，表面电子分布的变化(由H引起)将用角分辨光电子能谱和二次谐波产生来探测。表面几何结构将用低能电子衍射来确定。最后，将利用在束流装置中形成的团簇来研究金属颗粒大小的影响。

The phenomena embodied in the interaction of hydrogen with the surface of a simple metal encompasses most of the basic concepts in surface science, and these systems are tractable theoretically. A plethora of theoretical predictions based on a wide range of calculational procedures have gone unchallenged or unsubstantiated due to the almost complete absence of experimental data. Experimental techniques have now advanced to the stage where it is possible to probe both the dynamics and the statics of the interaction of hydrogen with simple metal surfaces. Activated adsorption and State Selective Detection of H2 will be used to measure the shape of the potential energy surface which makes the dissociation of H2 an activated process. Angle Resolved Inelastic Electron Scattering will be utilized to measure the modification of the surface phonon spectra and the surface plasmon dispersion which is induced by various phases of adsorbed H. Changes (induced by H) in the surface electronic distribution will be probed by Angle Resolved Photoemission and Second Harmonic Generation. The surface geometrical structure will be determined using Low Energy Electron Diffraction. Finally, the effect of metallic particle size will be studied using clusters formed in a beam apparatus.