Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Energy limits of gamma rays

  1. Aug 15, 2007 #1
    Hello you guys. I was wondering about the energy limits of the gamma rays. I allready know that the gamma ray spectrum varies from some MeV to 50 MeV (approximately). Does anyone know how can these limits be justified?
     
  2. jcsd
  3. Aug 15, 2007 #2

    mathman

    User Avatar
    Science Advisor
    Gold Member

    The lower limit of gamma ray energy is basically a matter of definition. X-rays are the next lower type and the boundary is somewhat arbitrary One way of defining might be when coherent scattering (X-ray) is more important than Compton (gamma).

    There is no defined upper limit. It is merely a question of what is physically possible.
     
  4. Aug 15, 2007 #3

    chroot

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The distinction betwen hard X-rays and gamma rays is usually taken be their origin. Gamma rays are generated by nuclear decays, while hard X-rays are produced by man-made electronics.

    There is no upper limit on gamma-ray energy, though the GZK cutoff is a limit on the energy of gamma rays which are able to survive long travels across the universe.

    - Warren
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Energy limits of gamma rays
  1. High energy gamma rays (Replies: 8)

Loading...