Abstract
Transition moment functions involving the ground electronic state and various excited doublet states of the BeH molecule are reported using highly correlated wavefunctions generated by the multi-reference single and double excitations configuration interaction approach. Radiative transition probabilities and lifetimes for the band systems A 2 Π –X 2 Σ + and C 2 Σ + –X 2 Σ + are also presented. Radiative lifetimes are predicted to be 81 and 163 ns for the first vibrational level of the A 2 Π and C 2 Σ + states, respectively. The strongest transitions should correspond to the (0–0) and (0–8) bands of the A 2 Π + –X 2 Σ + and C 2 Σ + –X 2 Σ + systems.
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