Barium tungsten cathodes usually work in a vacuum environment. In fact, one of the most common working environments for barium tungsten cathodes is in a vacuum. This is because in an atmospheric environment, electron emission is collided and disturbed by gas molecules, thereby affecting the performance of the cathode. Placing the barium-tungsten cathode in a vacuum environment can effectively reduce these interferences, thereby maintaining stable electron emission performance.
In a vacuum environment, electrons can more easily escape from the cathode surface because there are no gas molecules to interfere with the electron’s motion. This helps maintain stable electron emission, resulting in more reliable device operation.
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