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

I What does ALPHA_EM stand for?

  1. Apr 14, 2016 #1
    What does the term αEM mean?

    I'm looking at the Coulombic Potential of an alpha particle separating from a daughter nucleus and it is stated that: VC(r)=2ZαEMħc/r

    Im not really sure where this term derives from? Does anyone know?
  2. jcsd
  3. Apr 14, 2016 #2


    User Avatar
    Gold Member

    Its called the fine structure constant.
    And that's the potential energy of two particles with charges e and Ze.
  4. Apr 14, 2016 #3
    Omg ofc it is! I was confused because it was about alpha particles. Thank you!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: What does ALPHA_EM stand for?