Properties of the Low-LyingCu63Levels

Abstract

The nuclear properties of the low-lying levels of ${\mathrm{Cu}}^{63}$ have been calculated with a core-to-particle interaction of the form $H_{\mathrm{int}}=-\xi \left({{\mathrm{J}}_c}^{\mathrm{}\left(1\right)\mathrm{}}·{{\mathrm{j}}_p}^{\mathrm{}\left(1\right)\mathrm{}}\right)-\eta \left({{\mathrm{Q}}_c}^{\mathrm{}\left(2\right)\mathrm{}}·{{\mathrm{Q}}_p}^{\mathrm{}\left(2\right)\mathrm{}}\right)$, where ${{\mathrm{J}}_c}^{\mathrm{}\left(1\right)\mathrm{}}$ and ${{\mathrm{Q}}_c}^{\mathrm{}\left(2\right)\mathrm{}}$ are, respectively, the angular-momentum operator and the mass quadrupole operator of the core, while ${{\mathrm{j}}_p}^{\mathrm{}\left(1\right)\mathrm{}}$ and ${{\mathrm{Q}}_p}^{\mathrm{}\left(2\right)\mathrm{}}$ play a similar role for the particle. Energy levels, single-particle admixtures, and electromagnetic properties of the ground state and excited levels of ${\mathrm{Cu}}^{63}$ have been fitted quite well with relatively few adjustable parameters. The magnetic dipole properties of ${\mathrm{Cu}}^{63}$ are not in as good agreement with the experimental results as the electric quadrupole properties.