Energy Levels of Light Nuclei A = 14 - Triangle Universities Nuclear ...

Figure 5: Isobar diagram, A=14. The diagrams for individual isobars have been shifted vertically to
eliminate the neutron-proton mass difference and the Coulomb energy, taken as E C =0.60Z(Z − 1)/A 1=3 .
Energies in square brackets represent the (approximate) nuclear energy, E N = M(Z, A)−ZM(H)−NM(n)−
E C , minus the corresponding quantity for 14 C: here M represents the atomic mass excess in MeV. Levels
which are presumed to be isospin multiplets are connected by dashed lines.
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