Abstract
Transition properties for the A1Π-X1Σ+ system of PN have been investigated. Three sets of the potential energy curves (PECs) for the X1Σ+ and A1Π states are studied by the ab initio calculation, the Rydberg-Klein-Rees method and an empirical fitting to the experimental energies. Transition probabilities are then computed utilizing the empirical PECs and a high-level ab initio transition dipole moment. The partition functions for temperatures up to 10000 K are generated by employing the hybrid empirical and ab initio energies of eight low-lying states. Finally, the line list of PN A1Π-X1Σ+ transition is presented.
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