Spectre d'émission de la molécule PO : transitions <i>D</i>²Π–<i>B</i>²Σ⁺ et <i>D</i>′²Π–<i>B</i>²Σ⁺ des molécules P¹⁶O et P¹⁸O. Reconsidération de l'état de valence <i>D</i>′²Π

Abstract

New vibrational levels of the D′ 2 Π state for P 16 O and P 18 O interacting with the level ν = 0 of the D 2 Π state are studied by means of a transition to the B 2 Σ + state. Deperturbation calculations have been carried out. The results obtained lead us to look at two hypotheses. In particular, the eventuality is considered that D′ 2 Π and B′ 2 Π are the same state, some high levels of which are observed here.