Radiative association of LiHe+

Spontaneous radiative association of the molecular ion LiHe+ is investigated including three electronic states X 1 Σ + , A 1 Σ + , and a 3 Σ + . Cross sections for four processes of radiative association X → X, A → A, A → X, and a → a are calculated as functions of collision energy. The corresponding rates of formation are derived as functions of temperature. The A → X radiative association process exhibits the largest cross sections and rate coefficients because of the huge amount of the de-excitation energy from the A state to the X state.