Hyperfine Structure of Nine Levels in Two Configurations ofV51. II. Theoretical

The experimental data of the preceding paper on the hfs of nine low levels in two configurations of ${\mathrm{V}}^{51}$ are analyzed and compared with the theory. The effects of intermediate coupling, configuration interaction, and relativity are considered. Corrections for $J$ mixing within each multiplet are made. The measured $J$ dependence of the hyperfine-interaction constants and electronic $g$ factors of the nine levels is in rather good agreement with the theory. The ground-state nuclear electric-quadrupole moment is evaluated independently in each of the two configurations. Since the two values are the same to within 3%, the differential Sternheimer effect is apparently small. Although the new value of the quadrupole moment is now in good agreement with the theoretical prediction, the absolute value of any Sternheimer shielding is still unknown.