Spectre d'émission du radical P2 : Etude des transitions C1Σu+–X1Σg+, A1Πg–X1Σg+ et B1Πu–A1Πg

Abstract

Three electronic systems of the P₂ radical have been photographed and studied in emission. Sixteen bands of the main system C¹Σ_u⁺–X¹Σ_g⁺ have been analyzed and a new perturbation for which the maximum is situated at J = 68 has been observed in the ν = 4 level of the C¹Σ_u⁺ state. The study of the A¹Π_g–X¹Σ_g⁺ transition has been extended by the analysis of the ν′ = 2 and 3 levels and by further observations in the ν′ = 1 level. Finally it has been possible to characterize a new transition B¹Π_u–A¹Π_g by the analysis of eight bands. Constants for the new B¹Π_u state have been calculated.