`` NEWTON: Interaction of Forces in Nucleus of Atom
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Name: Maxim
Status: student
Grade: 9-12
Date: Spring 2013

If the binding force between quarks in an elementary particle gets stronger the more you pull them apart, like a rubber band stretched between your thumbs, then will it become weaker if you bring them close together, or will they just repel?

Maxim, The strong force also has an energy increase when the quarks get too close together. A source with enough energy to push two quarks extremely close together can more easily create a quark-antiquark particle (a meson) to send the extra energy flying off. This keeps the two quarks from ever getting too close together. In the world of quarks, quark-antiquark combinations are showing up all over. Quarks and antiquarks combine to produce radiation all the time, too. This radiation can them be absorbed by other quarks. This radiation energy can also leave the particles and the nucleus. This is where some of the background radiation of the universe comes from.

Dr. Ken Mellendorf Physics Instructor Illinois Central College

Hi Maxim,

Thanks for the question. Quarks are elementary particles classified as fermions. The Pauli Exclusion Principle states that two identical fermions are not allowed to occupy the same space. So, if you try to bring two identical quarks together, they will repel.

I hope this helps. Please let me know if you have more questions. Thanks Jeff Grell

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