The 1Σ+-X1Σ+ transition of the PN molecule |
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Authors: | B Coquart JC Prudhomme |
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Institution: | Laboratoire de Chimie Physique, Faculté des Sciences, 51062 Reims Cedex, France |
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Abstract: | The recently observed 1Σ+-X1Σ+ transition of the PN molecule (J. Phys. B.13, 2251–2254 (1980)) has been photographed at high dispersion in the 1600–1900-Å region. A rotational analysis is carried out and shows 11 vibrational levels of the new 1Σ+ state. These levels are perturbed and absolute vibrational numbering cannot be determined. Some perturbations can be accounted for by interactions with the A1Π state. Weakening of lines are explained as accidental predissociations and allow us to discuss the dissociation energies of the X1Σ+ and A1Π states. |
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