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

I cannot find the equation for this graph.

  1. Nov 7, 2012 #1
    I need it for a program I am writing. I found it all over the net but never with an equation. After two days I'm giving up and hoping someone recognizes it. It doesn't have to be exact I can fix it up but the profile needs to be the same.

    Here it is:

    Attached Files:

  2. jcsd
  3. Nov 7, 2012 #2


    User Avatar
    Homework Helper
    Education Advisor
    Gold Member

    That shape looks familiar, but not sure from what exactly. Physics or physical chemistry?

    If you just want a function that fits the graph but you don't really know the mechanism making the shape, try polynomial function fit. Maybe third or fourth degree polynomial can give a good fit. Your graph shows fairly easily readable points. You'll only need the simplest of Linear Algebra skills to determine the function.
  4. Nov 7, 2012 #3
    Got it--Morse potential.



    Used to model nucleon-nucleon interactions.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook