Transition A2Σ+–X2 Π des molécules P16O et P18O. Perturbations de l'état A2Σ+

Abstract

New emission bands of the A2Σ+–X2 Π system of the P16O molecule have been analyzed and this transition for P18O has been studied for the first time, with a mean dispersion of 0.30 Å/mm. The levels 0, 1, 2, 3, 4, 5, and 6 of the A2Σ+ state for P16O and the levels 0, 1, 2, 3, and 4 of this state for P18O show perturbations from various species, some of which, studied previously for P16O, are attributable to a 4Σ− state and to the C2Σ− state. A vibrational quantification of the 4Σ− state is tried.