阴极是电真空器件中的电子泉源,是一个必不可少的組成部份,随着电真空器件的迅速发展,对阴极也提出了很多严格的要求。为了滿足这些要求,就要大力展开阴极电子学的研究。但阴极电子学本身又是一門相对独立的科学。如果它得到进一步的发展,也可以为电真空器件打开新的道路。下面分别談一下阴极电子学几个方面的发展方向: 热电阴极热电阴极由于便于控制,在电真空器件中应用甚为广泛,因此也是阴极电子学研究的重点。它和电真空器件的联系也最为密切。近代电真空器件的发展方向之一就是提高功率,这是由于国际通訊日益頻繁和星际通訊的宏伟前景而引起的。在提高功率的同时, The cathode is an electronic source of electric vacuum devices and is an indispensable component. With the rapid development of electric vacuum devices, a number of strict requirements have also been put forward on the cathode. In order to meet these requirements, we must vigorously expand the cathode electronics research. But cathode electronics itself is a relatively independent science. If it is further developed, it can open a new path for electric vacuum devices. Here are some aspects of cathode electronics talk about the development direction: Thermoelectric cathode Thermoelectric cathode because of ease of control in the vacuum device is widely used, and therefore is the focus of the cathode electronics. It is also the most closely linked with the vacuum device. One of the development directions of modern vacuum devices is to increase the power, which is caused by the increasing international communications and the grand prospect of interstellar communications. While raising the power,