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B Force between two Nucleons

  1. Sep 30, 2018 #1
    My question is whether the force between two protons is slightly less than the force between two neutrons as you'd expect from the electrostatic repulsion or does the strong nuclear force somehow treat all nucleons such that they have the same force acting between them? I'd really appreciate some help, thank you
     
    Last edited by a moderator: Sep 30, 2018
  2. jcsd
  3. Sep 30, 2018 #2
    Of course the electrostatic forces are much weaker- I'm just interested in knowing if there indeed is a slight difference as one might think
     
  4. Sep 30, 2018 #3

    mfb

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    The strong interaction doesn't care about electric charges. You have two independent interactions, and for two protons the electromagnetic interaction is repulsive.
     
  5. Oct 1, 2018 #4

    LURCH

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    This is a very interesting question. Does this mean that the amount of force required to separate two neutrons is the same as that required to seperate two protons? Or can the protons be separated with slightly less force, like, the the amount required for neutrons minus something for the strength of the magnetic repulsion between the two protons?
     
  6. Oct 1, 2018 #5
    Exactly what I want to know :D
     
  7. Oct 1, 2018 #6
    which would imply what @LURCH said, correct?
     
  8. Oct 1, 2018 #7

    mfb

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    There is no bound state for two protons or two neutrons and "distance" becomes a problematic concept as well.
     
  9. Oct 1, 2018 #8
    So its very hard to say. Alright, I can take that as the best answer which can possibly be given- Thank you very much :D
     
  10. Oct 1, 2018 #9
    Does an alpha particle not count as a bound state?

    Cheers
     
  11. Oct 1, 2018 #10
    Alpha particle is 2 neutrons+2 protons. I think he means there are no two separate nuclei which have only 2 protons or two neutrons
     
  12. Oct 2, 2018 #11
    The strong force works between proton in the nucleus. The energy to keep them together came from Δm of mass of nucleus and Total mass of proton and neutron, the Δm was converted to energy by the equation E = Δm.c² to keep proton in the nucleus stay together
     
  13. Oct 2, 2018 #12

    mfb

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    Right. If there would be bound states "2 protons" and "2 neutrons" (separately) then the former could be bound weaker.
     
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