Electronic spectra and structure of the hydrogen halides. States associated with the ( σ2π3) cσ and ( σ2π3) cπ configurations of HI and DI
The high resolution absorption spectra of HI and DI have been investigated in the ∼ 1425 Å to 1570 Å region. The majority of the bands observed in the region are assigned to transitions from X1Σ + to states associated with the excited configurations ( σ2π3) cσ and ( σ2π3) cπ. This region also contains bands assigned to transitions from X1Σ + to states associated with more highly excited configurations and to excited vibrational levels of the V1Σ +, b2Π, and C1Π states. The states associated with the ( σ2π3) cσ and cπ configurations exhibit Ω, ω coupling. Effective molecular constants are presented for the bands observed within the above wave-length region.