Shell-Model Calculations forCu60andZn60with Reaction Matrix Elements

Employing ${\mathrm{Ni}}^{56}$ as core, and Kuo and Brown renormalized matrix elements for the Hamada-Johnston nucleon-nucleon potential as the residual interaction, the level structure of both ${\mathrm{Cu}}^{60}$ and ${\mathrm{Zn}}^{60}$ is studied within the framework of the shell model. The four active nucleons are allowed to populate the $1p_{\frac{3}{2}}$, $0f_{\frac{5}{2}}$, and $1p_{\frac{1}{2}}$ single-particle orbitals. A comparison with the observed level spectra is made, and good agreement with those levels whose spins and parity are definitely known is found. Other levels whose spins and parity assignments are not definite have corresponding theoretical levels which should help in determining their spins in the future measurements.