Bremsstrahlung
Bremsstrahlung is electromagnetic radiation produced
by the deceleration of a charged particle when deflected by
another charged particle, typically an electron by an atomic
nucleus. The moving particle loses kinetic
energy, which is converted into a photon because energy is conserved. The term is also used to refer
to the process of producing the radiation. Bremsstrahlung has a continuous spectrum, which becomes more intense and
shifts toward higher frequencies as the change of the energy of the accelerated
particles increases.
Strictly speaking, bremsstrahlung
is any radiation due to the acceleration of a charged particle, which includes synchrotron radiation and cyclotron radiation; however, it is frequently used
in the more narrow sense of radiation from electrons stopping in matter.
Bremsstrahlung
produced by a high-energy electron deflected in the electric field of an atomic
nucleus
Bremsstrahlung emitted from plasma is sometimes referred to as free-free radiation. This refers
to the fact that the radiation in this case is created by charged particles
that are free both before and after the deflection (acceleration) that
causes the emission.
Source: wikipedia, NASA
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