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俄歇电子能谱(AES)是鉴定催化剂表面原子、分析原子分布等表面组成的有力方法;低能电子衍射(LEED)则用于探明暴露在晶格面上的原子排列或吸附分子的结合位置。本讲介绍这两种方法及其应用。四、俄歇电子能谱1.电子发射机理及其测定1925年俄歇所发现的电子发射现象,是按照下面机理进行的。用电子束轰击表面原子,或用 X 射线照射表面原子时,一次电子
Auger electron spectroscopy (AES) is a powerful method to identify the surface atoms of the catalyst and to analyze the surface composition of the atomic distribution. Low-energy electron diffraction (LEED) is used to determine the atomic arrangement or the binding sites of adsorbed molecules exposed on the lattice planes . This talk introduces the two methods and their applications. Fourth, Auger electron spectroscopy 1. Electron emission mechanism and its determination 1925 Auger discovered by the phenomenon of electron emission is carried out in accordance with the following mechanism. Electron beam bombardment of surface atoms, or X-ray irradiation of surface atoms, primary electrons