Bremsestråling
Bremsstrahlung is a type of electromagnetic radiation produced by the deceleration of a charged particle when it is deflected by another charged particle. The term "bremsstrahlung" is German and means "braking radiation." This phenomenon is particularly significant when a fast-moving electron is rapidly slowed down, for example, when it strikes the anode target in an X-ray tube. The energy lost by the electron during this deceleration is emitted as photons, which constitute the bremsstrahlung.
The energy of the emitted photons can range from very low to a maximum value equal to