Barium tungsten cathode has an important application in phosphor screen. A fluorescent screen is a device for displaying images, which displays images by exciting fluorescent materials with electron beams to generate visible light. The following is information on the application of barium tungsten cathodes in fluorescent screens:
Electron emission: The barium tungsten cathode emits electrons stably, which are used to generate the electron beam.
Electron Beam Initiation: The generated electron beam is directed and directed onto the surface of the phosphor screen.
Fluorescent material excitation: The electron beam hits the fluorescent material on the phosphor screen, which excites the electrons in the fluorescent material and makes it jump to a higher energy level.
Visible light emission: Upon transition back to a lower energy level, the fluorescent material releases energy, producing visible light.
Image generation: An electron beam scans the surface of the phosphor screen to excite the phosphor material to produce a visible light image, thereby creating an image on the phosphor screen.
Color display: By using different fluorescent materials, images of different colors can be generated on the fluorescent screen to achieve color display.
Application fields: Fluorescent screens are widely used in televisions, computer monitors, monitors, billboards, information display systems and other fields.
Resolution and brightness: The performance of the barium tungsten cathode can affect the intensity and stability of the electron beam, which in turn affects the resolution and brightness of the fluorescent screen.
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