Abstract
Low-energy (0.04–3.0 MeV) neutron data for even-even 58–64Ni and 64–70Zn isotopes are analyzed in terms of the coupled channel optical model (CCOM) as a function of NpNn, where Np(Nn) are the numbers of valent nucleons (particles or holes), and consider the relationship between the diffuseness parameter obtained from CCOM calculations and the value of the NpNn function. Considering the Ni and Zn isotope chains with the traditional magic number Z = 28 and the nontraditional N = 38 proves the existence of N = 28–38 subshells. The results from our analysis indicate the possible existence of the nontraditional magic nucleus 3068Zn38.
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