What occurs to the energy of electrons as they are accelerated towards the output phosphor?

When electrons are accelerated towards the output phosphor in a fluoroscopy system, they gain kinetic energy. This increase in kinetic energy is a result of the electric potential difference applied between the cathode and anodes within the image intensifier. As the electrons travel towards the output phosphor, their kinetic energy increases, which enables them to interact effectively with the phosphor material.

Upon striking the output phosphor, the high-energy electrons transfer their kinetic energy to the phosphor, which then emits light in response. This process contributes to the creation of a brighter image for the fluoroscopic examination. The relationship between the acceleration of electrons and the intensity of the resultant light is crucial, as it enhances the visibility of the structures being examined on the screen.

In summary, the correct understanding is that the acceleration of electrons towards the output phosphor results in a gain of kinetic energy, which subsequently contributes to the production of brighter light in the imaging process.