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Photo electric effect

  1. Jul 1, 2011 #1
    what happens if a photon with insufficient energy to overcome the work function collide with a electron.
     
  2. jcsd
  3. Jul 1, 2011 #2
    I think elastic collision take place photon will hits the electron without remove it from it's orbit
    and photon will cause scattering :confused:
     
  4. Jul 1, 2011 #3

    ZapperZ

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    The excited electron decays back below the Fermi energy (it recombines with a hole that was created when it got excited). The energy then is transferred to the lattice vibrations of the material, and is lost as heat.

    Zz.
     
  5. Jul 1, 2011 #4
    what about my answer Dr Zz it's wrong ?
     
  6. Jul 1, 2011 #5

    ZapperZ

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    Yes, and you really shouldn't be offering an answer if you are not sure (re-read the PF Rules that you had agreed to).

    Photoelectric effect often takes place in METALS, and metals are solids. It means that most of its behavior are due to a COLLECTIVE phenomena, not due to individual atoms. The electrons that are involved in a standard photoelectric effect comes from the CONDUCTION BAND, not from individual atoms. So to invoke "orbits" is incorrect in this case.

    Zz.
     
  7. Jul 1, 2011 #6
    okay sorry
     
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