Barium tungsten electrodes have various applications in vacuum devices, mainly due to their high pulse current emission density, long service life, resistance to ion bombardment, and anti poisoning ability.
Firstly, barium tungsten electrodes are often used to prepare vacuum and laser devices, such as HID lamps. Its low escape work and high current density enable efficient electron emission in these devices, thereby improving their performance.
Secondly, barium tungsten electrodes are also widely used in microwave vacuum electronic devices. As the core component of vacuum electronic equipment, it provides a continuous stream of electrons for devices such as cyclotron traveling wave tubes, high current linear induction accelerators, and klystrons. The barium tungsten cathode utilizes the porous properties of the tungsten matrix to store active substances in the tungsten sponge. Under working conditions, the salt reacts with the tungsten matrix, and the reduced free barium diffuses along the pores to form a stable emission on the cathode surface.
In addition, barium tungsten electrodes are also used for electrochemical analysis of halogen elements, heavy metal ions, and drugs in aqueous solutions due to their excellent electrochemical properties, such as high stability and low capacitance.
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