Rotational analysis of the 0-0 band of the A ³Π_inv-X³Π^- system of ND

Abstract

The 0-0 band of the A ³Π_inv-X ³∑^- system of ND was excited in an electrodeless microwave oscillator (2450 Mc./s.) discharge and photographed on a 6·6 meter concave grating spectrograph in the second order at a dispersion of 0·56 A/mm. Twenty-five out of the predicted twenty-seven branches have been identified in the rotational structure of the 0-0 band. From a rotational analysis, the following rotational constants have been determined: (i)X ³ ∑ - state- B₀^∏(cm.⁻¹) D₀^∏(cm.⁻¹) (2λ + ϒ) (cm.⁻¹) 8.7757 4.68 × 10^-4 −1.8356. (ii)A ³ ∏ inv state - B₀^∏(cm.⁻¹) D₀'(cm.^-1) A(cm.^-1) C₀'(cm.^-1) D₂'(cm.⁻¹) V₀₀'(cm.⁻¹) 8.7688 5.02 × 10^-4 -31.89 -1.40 +0.0118 29799.5