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电子发射的形式很多,主要有热电子发射、光电子发射、次级电子发射及场(?)电子发射等。次级电子发射在电子发射中占有一定地位,近入十年来,对其进行了大量研究,并在次级发射理论与应用技术方面有很大发展,尤其是用电子轰击物体所引起的次级电子发射,它是光电倍增器件中必需采用的基本发射形式,而低能衍射仪和俄歇能谱仪等分析仪器,也是以次级电子发射原理为基础的,近年来已获得了迅速发展,并广泛用于固体表面状态的研究及表面单原子层组成结构等分析技术中,对研究材料的物理化学性质起了很大的作用。
There are many forms of electron emission, mainly hot electron emission, photoelectron emission, secondary electron emission and field electron emission. Secondary electron emission occupies a certain position in the electron emission, a decade has been carried out, a lot of research on it, and in the secondary emission theory and application of technology has been greatly developed, especially with the electronic bombardment of the secondary objects caused by Electron emission, which is the basic emission form that must be used in photomultiplier devices, and analytical instruments such as low-energy diffractometers and Auger spectrometers, are also based on the secondary electron emission principle and have gained rapid development in recent years Widely used in the study of solid surface conditions and surface single atomic layer structure analysis techniques, the study of the physical and chemical properties of the material played a significant role.