On interpreting the photoelectron spectra of MgO−

The 2Σ+ and 2Π states of MgO− and the 1Σ+, 1Π, and 3Π states of MgO are studied using the ACPF approach. The computed spectroscopic constants are in good agreement with the available experimental data. The computed Franck–Condon factors and photodetachment overlaps are compared with experiment.