What Force Holds Protons in the Nucleus Together.
Most recent answer: 02/29/2016
Q:
I was wondering why it is that the protons within a nucleus don't repel from each other and split apart. I.e. what is there to stop the protons from moving away in opposite directions.
- Connor (age 14)
Edinburgh, Scotland
- Connor (age 14)
Edinburgh, Scotland
A:
Hi Connor,
As you are aware, the repulsive electrical force of like-sign protons in a nucleus would like to make them repel each other. However, there is an additional force inside the nucleus that prevents this: the strong nucleon-nucleon force that is attractive rather than repulsive. This strong nuclear force is, however, rather short ranged and as soon as a proton gets outside its range then the repulsive electric force takes over and repels the stray proton.
LeeH
(published on 02/29/2016)