Electric quadrupole transition parameters for singly ionized magnesium (Mg II)

The electric quadrupole (E2) transition parameters, such as wavelengths, oscillator strengths, and transition probabilities (or rates) have been calculated using the relativistic Hartree-Fock (HFR) method developed by Cowan for singly ionized magnesium (Mg II, Z = 12). We have compared our results with previously reported the available calculations in literature. A discussion of these calculations for Mg II in this study has also been in view of the HFR method.