Abstract
Abstract The A 2 Π- X 2 Σ + emission of ZnD was studied at moderate and high resolution in the region 346–505 nm. A detailed rotational analysis of 10 bands has been performed using the 2 Π formulas of Mulliken and Christy, with the Almy and Horsfall centrifugal distortion term. The principal molecular constants for the X 2 Σ + state are (cm −1 ): B e = 3.3990, α e = 0.0964, D e = 1.16 × 10 −4 , β e = 6.4 × 10 −6 , γ 0 = 0.122, ω e = 1141.54, ω e x e = 24.29, and, for the A 2 Π state, T e = 23 280.55, B e = 3.7772, α e = 0.0868, D e = 1.14 × 10 −4 , A 0 = 343.29, p 0 = 0.149, q 0 = 1.53 × 10 −3 , ω e = 1361.49, and ω e x e = 20.69. RKR potential curves and A - X Franck-Condon factors were calculated. A comparison was made with the spectrum of ZnH and the isotopic splitting for 64 ZnD, 66 ZnD, and 68 ZnD is briefly discussed.
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