Re: Why don't protons attract due to gluons and only with neutrons?


guskz@xxxxxxxxxxx wrote:
Igor wrote:
guskz@xxxxxxxxxxx wrote:
Tom Roberts wrote:
guskz@xxxxxxxxxxx wrote:
1. Why aren't protons attracted to each other due to gluons?

They are. But only when they are within 10^-15 meters or so, and it
requires a lot of energy to get them that close, due to Coulomb
repulsion.

Thanks

At energies above the Coulomb barrier of two protons, the
scattering cross-sections are identical for p-p, p-n, and p-pbar
scattering, indicating the underlying mechanisms are very similar.


Do they remain attracted together, or do they return to beyond the
10^15 meter distance?

How come then there is no "normal" atoms ("normal" nucleus) with more
neutrons than protons (since neutrons are attracted to each other)?


2. Why are protons ONLY attracted to neutrons due to gluons?

They aren't.


3. Are neutrons attracted to other neutrons, if so why?

Yes. Because the color force is always attractive, basically due to the
fact that gluons carry color charge, just like quarks.


Ok but that doesn't explain why there isn't normal particles/atoms in
nature that are only made of neutrons?

Think about it a bit. How are you going to form atoms out of nuclei
that are only made of neutrons?

I don't know, Tom said that neutron are attracted to each other,
therefore they should be able to form some sort of particle by
themselves? (example: Protons & electrons bind to form hydrogen).

I told you to think about it. Again, and more slowly this time: how
are you going to form atoms from nuclei only made of neutrons?

And it doesn't explain why the nucleus has equal parts of neutrons &
protons...how come there aint more neutrons then protons in a nucleus?

Doesn't have to, because it's simply not true. Most nuclei have more
neutrons than protons. That's what the whole concept of atomic
isotopes is all about.

.

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