Abstract
The B 2Σ-X 2Σ band system of gaseous barium hydride in the wave length region 8900-11200 Å has been examined in absorption using a King furnace. The spectrum has been obtained by means of Fourier transform spectroscopy. Seven bands have been rotationally analyzed. Term values and molecular constants of the B 2Σ and X 2Σ states have been determined by standard least-squares analysis. The following molecular constants have been derived (cm-1): T e ωe ωe x e ωe y e B e αe 104 × D e B 2Σ+ 11092.5931088.89815.4710.02373.268790.070611.1585 X 2Σ+ 0.1168.43314.6110.02763.382260.065681.1234
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