Spin–orbit all-electron configuration interaction study on the electronic structure and radiative lifetimes of low-lying excited states of CdH

We calculated the potential energy curves of 10 Λ-S states correlated with the five lowest dissociation limits of the CdH radical by a configuration interaction method, as well as those of 17 Ω states generated from the Λ-S states. The spectroscopic parameters of bound states were calculated and found to be well consistent with the latest experimental results. We also discussed the possible predissociation mechanisms of C2Σ+, 42Σ+ and 22Π states on the basis of the calculation of spin–orbit elements. Finally, the allowed transition dipole moments and the radiative lifetimes of A2Π, B2Σ+ and C2Σ+ states were obtained.