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Re: [Phys-L] Energy & Bonds

The nuclear shell model is a nice example implying the existence of
well-defined nucleons in a nucleus.

In this context I'm not sure what the message is, but note the apparent
existence of alpha particles in nuclei, as seen in alpha decay (but on the
other hand you don't see proton or neutron or deuteron or triton decay).


On Thu, Nov 14, 2013 at 1:59 PM, John Denker <> wrote:

deuteron IS NOT does not contain a proton and a neutron

That seems unhelpful. There is a /shell structure/
for the nucleons inside a nucleus, more-or-less analogous
to the shell structure for the atomic electrons.
That wouldn't be happening if there were not reasonably
well-defined protons and nucleons running round inside
the nucleus. Like any model, the nuclear shell model
has its advantages and disadvantages ... but it would
be nuts to dismiss it out of hand.