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Why no Compton with Potoelectric effect?

  1. Sep 27, 2010 #1
    In the photoelectric effect all the energy of the photon is considered to be absorbed in both freeing the electron and giving it Kinetic energy. But why can’t there be a lower frequency photon left over or residual energy absorbed by the material from which the electron came?
  2. jcsd
  3. Sep 27, 2010 #2


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    Staff: Mentor

  4. Sep 27, 2010 #3
    There are always atomic x-ray photons emitted from the target atom after a deep core photoejection. They represent atomic transitions filling the vacancy in the K, L, or M shell. Unlike Compton scattering, there is no direct instantaneous secondary photon.

    Bob S
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