Site-sensitive measurement of occupied and unoccupied states near the Fermi level by using Auger electron-electron energy loss coincidence spectroscopy

为了同时和择址地获得费米能级附近的占据态和未占据态的信息，我们设计并制造了一台易于调节的同轴对称镜电子能量分析器，用于固体中俄歇电子-电子能量损失符合的研究。虽然计划因设计变更而推迟，但我们能够获得基本数据。在电子能量损失实验中，反射模式由于跃迁几率小，安装方便，不能产生足够的信号强度，而透射模式由于不易安装，却有可能获得有意义的数据。

For the purpose of obtaining the knowledge of occupied and unoccupied states near Fermi level simultaneously and site-selectively, we have designed and constructed a coaxially symmetric mirror electron energy analyzer which is easy to adjust and is used for Auger electron-electron energy loss coincidence studies in solids. Though the plan was delayed by design changes, we were able to obtain basic data. The reflection mode set-up in the electron energy loss experiment which is easy to install could not bring sufficient signal intensity due to the small transition probability, but the transmission one which is not easy to do so was found to have the probability of obtaining significant data.