B Atom Emission: Neutron or Proton?

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Atoms can indeed emit neutrons or protons, particularly when they are unstable and located near the neutron or proton drip-lines. This emission occurs similarly to alpha emission, where nuclei with negative separation energies are involved. During nuclear fusion, high-energy "hot compound nuclei" are formed, which can release energy by evaporating nucleons. Heavy nuclei typically emit neutrons, while lighter ones may emit protons and other charged particles. The discussion confirms the validity of the statement regarding nucleon emission for the book being written.
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Is it possible for an atom to emit a neutron or a proton?
 
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In short, yes.

In their ground-state, nuclei will only emit neutrons or protons if they are unstable with respect to neutron or proton emission, in the same way as for alpha emission. In general, this occurs close to the neutron or proton drip-lines, respectively. That is, their neutron (proton) separation energies are negative, as shown below.
Screenshot from 2016-05-11 17:44:15.png
Screenshot from 2016-05-11 17:44:26.png


Now, when you produce nuclei via fusion, you tend to produce them with high excitation where their level densities are very high - these are called "hot compound nuclei". Nuclei in this state will release energy by evaporating one or more nucleons. Heavy compound nuclei emit neutrons, and light compound nuclei will also emit protons and other charged particles (e.g. alphas).
 
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e.bar.goum said:
In short, yes.

Now, when you produce nuclei via fusion, you tend to produce them with high excitation where their level densities are very high - these are called "hot compound nuclei". Nuclei in this state will release energy by evaporating one or more nucleons. Heavy compound nuclei emit neutrons, and light compound nuclei will also emit protons and other charged particles (e.g. alphas).

Thanks :smile:

I am writing a book, and I said that nuclei can emit protons and neutrons, and was just checking if it is true :smile:
 
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