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Homework Help: Photon-Electron Collision

  1. Sep 30, 2004 #1


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    If I'm given an energy for an electron, and a wavelength for a photon, how can I determine the maximum energy loss for the electron?
  2. jcsd
  3. Oct 31, 2004 #2

    Andrew Mason

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    I am not sure of your question. Are you talking about an electron/photon collision where the electron is not strongly bound to an atom?

    Free electron/photon collisions follow the Compton formula:

    [tex]\triangle \lambda = \frac{h}{m_ec} (1 - cos\theta) [/tex]

    where [itex]\theta[/itex] is the angle of the electron's velocity after the collision compared to the direction of the original photon.

    The electron gains energy in the collision.

    Last edited: Oct 31, 2004
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