A version of the Aufbau principle known as the nuclear shell model is used to predict the configuration of protons and neutrons in an atomic nucleus.
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For example, in the shell model, a proton and a neutron with overlapping wavefunctions will have a greater strong interaction between them and stronger binding energy.
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The " shells " of the shell model are then no longer identical to the levels denoted by " n ", and the magic numbers are changed.
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Problems with the shell model have led some to propose realistic two-body and three-body nuclear force effects involving nucleon clusters and then build the nucleus on this basis.
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The authors measured the two-neutron separation energy to be 1.35 ( 10 ) MeV, in good agreement with shell model calculations, using standard interactions for this mass region.
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Higher electric and magnetic multipole moments cannot be predicted by this simple version of the shell model, for the reasons similar to those in the case of deuterium.
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48 Ca is the lightest nucleus known to undergo double beta decay and the only one simple enough to be analyzed with the " sd " nuclear shell model.
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The more sophisticated nuclear shell model is needed to mechanistically explain the route to the more energetically favorable outcome, in which one fission product is slightly smaller than the other.
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The Aufbau principle can be applied, in a modified form, to the protons and neutrons in the atomic nucleus, as in the shell model of nuclear physics and nuclear chemistry.
