What is the purpose of the output phosphor in the Clover Image Intensifier?

The purpose of the output phosphor in the Clover Image Intensifier is to convert accelerated electrons back into visible light. This process occurs after the initial steps of x-ray exposure and electron generation. When x-rays interact with the input phosphor, they produce a corresponding number of photoelectrons. These electrons are then accelerated towards the output phosphor by an electric field. The output phosphor is specifically designed to emit visible light when it is excited by these accelerated electrons. As a result, it plays a crucial role in enhancing the overall brightness and clarity of the image that is ultimately produced for visual output or further processing.