Barium tungsten cathode is a common cathode material in xenon flash lamp that is a device that uses the discharge of xenon to generate intense light flashes. It is widely used in photographic flash lamps, laser systems, high-speed photography, medical equipment, xenon lasers and other fields.
In a xenon flash lamp, the BaW cathode acts as the electron generator. When xenon discharges, the generated electron flow will hit the cathode, which will excite the tungsten in the BaW cathode to emit a large number of electrons. These electrons are accelerated by the high-voltage electric field and collide with xenon atoms, which excite the xenon atoms to produce light. The resulting intense light is the flash from a xenon flash.
The application of barium tungsten electrode in the lamp benefits from its good electron emission performance and stability, which can generate enough electrons under high electric field and has a long service life. This allows xenon flash lamps to consistently produce high intensity flashes of light and maintain consistent performance over multiple flash cycles.
It should be noted that the operation of the xenon flash lamps involves high pressure and high temperature, so it should be used with caution and in strict accordance with the relevant safety operating procedures to ensure the safety and stability of use.
In order to ensure the effectiveness of barium tungsten cathode products, it is required not to be exposed to the atmosphere for more than 48 hours before use, and it is necessary to prevent moisture, dust and other pollutants from contacting the product to the greatest extent. When the electrode absorbs too much moisture, spots may appear on the surface of the product during the heating process before subsequent use, which can be reduced or prevented by reducing the heating speed.
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