Further evidence for a linear relationship between changes in nuclear charge radii and binding energies per nucleon

The comparison of precise isotope shift data of Xe and Ba with the corresponding changes in binding energy per nucleon reveals a linear relationship between Δ and Δ(B/A) for even-even nuclei throughout the h11/2 neutron shell. The last pair, involving the magic neutron number, is an exception to this rule, indicating the existence of a shell-closure effect.