1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Energy of scattering photon and emitted electron

  1. Feb 11, 2016 #1
    1. The problem statement, all variables and given/known data
    Photon of energy [itex]E=0,3MeV[/itex] is scattering at an angle [itex]\phi=\frac{2\pi}{3}[/itex]. Calculate the energy [itex]E'[/itex] of scattered photon and emitted electron.

    2. Relevant equations
    -Compton effect

    3. The attempt at a solution

    By Compton effect, [tex]\frac{hc}{E'}-\frac{hc}{E}=\frac{2hc}{mc^2}\sin^2\frac{\phi}{2}\Rightarrow E'=\frac{mc^2E}{2E\sin^2\frac{\phi}{2}+mc^2}[/tex]

    What is the value of a mass [itex]m[/itex] of scattered photon and emitted electron?
  2. jcsd
  3. Feb 12, 2016 #2


    User Avatar
    2017 Award

    Staff: Mentor

    You can look up the masses, but you should certainly know the mass of a photon, and a rough estimate for the mass of an electron. One of them wouldn't make sense in this context.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted