DEPERTURBATION OF THE N-2(+) 1ST NEGATIVE GROUP B2-SIGMA-U+-X2-SIGMA-G+

Twelve bands of the N2+ B2Σu+-X2Σg+ system, including vB = 0-6 and vX = 0-8, are reanalyzed. All effects of B2Σu+ ∼ A2Πu perturbations are explicitly considered. Despite the use of high precision (0.01 cm-1) line measurements, no evidence for a perturber other than A2Πu is obtained. Deperturbed constants for the B2Σu+ and X2Σg+ states are derived. The deperturbation is shown to be self-consistent and complete (excluding effects of the C2Σu+ state) by examining semiempirical relationships of the perturbation matrix elements with the spin-rotation constants of the B and X states and atomic spin-orbit parameters. A number of previous analyses of transitions involving the vB = 3 and 5 levels are found to be incorrect. © 1979.