The electronic (yellow and violet) emission spectra of zirconium nitride

Abstract

Two emission systems of ZrN have been obtained under high resolution at 5700 and 4050 Å. They are the A2Π → X2Σ and B2Σ → X2Σ systems analogous to those previously known for the isoelectronic molecules ScO and TiN.Analysis of the B2Σ → X2Σ system of the 90Zr14N species yields the values B0 = 0.4587 cm−1 and B0 = 0.4830 cm−1 for the B and X states respectively, while for the A2Π state (which is severely perturbed at low J for the 90Zr14N species) the90Zr15N species gives B0 = 0.4523 cm−1 and this yields a (calculated) value for the A state of the 90Zr14N species of 0.4799 cm−1.There are four perturbations in the 2Π3/2 state of both the Zr14N and Zr15N species.