Study of MgKαx-ray multiplet structure observed in ion-atom collisions

High-resolution measurements of Mg $K\alpha$ x-ray spectra excited by 1-3-MeV/amu ${\mathrm{H}}^{+}$, ${\mathrm{He}}^{+}$, ${\mathrm{O}}^{2+}$, ${\mathrm{Ne}}^{2+}$, and ${\mathrm{S}}^{4+}$ ions have been performed for Mg metal and some of its compounds. A detailed examination of the multiplet structure of the $K{L}^1$, $K{L}^2$, and $K{L}^3$ satellite groups revealed substantial variations in the intensities of various components as a function of projectile velocity and atomic number, and as a function of the chemical composition of the target. A theoretical spectrum was constructed using transition energies obtained from "corrected" single-configuration Hartree-Fock results and assuming a statistical population of all initial states belonging to the same electron configuration. This theoretical spectrum agreed quite favorably with the experimental spectrum for Mg metal obtained with 5.4-MeV ${\mathrm{He}}^{+}$ ions.