X-ray emission is the process by which X-rays, a form of high-energy electromagnetic radiation, are produced. This occurs when high-energy electrons collide with a target material, typically a metal like tungsten. The energy from these collisions excites the atoms in the target, causing them to release energy in the form of X-rays. X-ray emission is widely used in various fields, including medicine for diagnostic imaging and industry for material inspection. In medical settings, X-rays help visualize the internal structures of the body, while in industrial applications, they are used to detect flaws in materials and components.