Barium tungsten electrode is a high-performance cathode material with tungsten as the matrix and barium added. It is usually prepared by impregnation, where the active barium compound is impregnated into a porous tungsten matrix. Barium tungsten electrode combines the high temperature stability of tungsten with the efficient electron emission ability of barium. It performs well in strong electric fields and high frequency environments and is widely used in lighting, electric vacuum devices, lasers and plasma equipment, such as high-intensity gas discharge lamps, xenon flash lamps, radar magnetrons, satellite communication traveling wave tubes, medical accelerators, etc.
