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The neutron in the nucleus
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  • Neutrons were first discovered in the 1930s as an answer to the energy conservation failing in an ionization chamber experiment.
  • Neutrons and protons are the basic constituents of atomic nuclei.  They are very similar in most ways apart from electric charge, and are thus collectively known as NUCLEONS.

Topics in this section

Properties of the neutron
Nuclear decay
Spontaneous fission
Neutron sources
Neutron reactions
Excitation functions


The Chart of the Nuclides.

Drag the cursor over the graph to change the selected area.  This plots all known nuclides as a function of Z and N. Stable nuclides are in pink; radioactive ones in mauve.

A more detailed version of this chart is given at BNL


The University of Liverpool
1999, 2000 The University of Liverpool, Department of Physics

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