A STUDY OF THE X-(2)SIGMA(+) AND A-(2)PI STATES OF MGAR+ AND MGKR+

The ground (2) Sigma(+) and lowest excited (II)-I-2 states of MgAr+ and MgKr+ are studied using the singles and doubles configuration-interaction (SDCI) approach, in conjunction with large basis sets. The effect of Mg core correlation and core polarization are accounted for using the core-polarization potential (CPP) approach. Franck-Condon factors, oscillator strengths, radiative lifetimes, dissociation energies, bond lengths, and excitation energies are reported. The computed results are in good agreement with the available experimental data.