Relative Transition Probabilities in Band Systems of Diatomic Molecules

A set of tables is given from which it is possible to obtain quickly the relative transition probabilities in band systems of diatomic molecules if the spectroscopic constants $${r}_{e},\,{\omega}_{e}\,\text{and}\,{x}_{e}$$ are known. Two methods of using the tables are described. One is applicable if the electronic transition causes a small or moderate change in the equilibrium internuclear separation; and the other is applicable if the change is moderate or large. The first method is not significantly less accurate than the Morse approximation. Though the second method does not yield results of such high precision, it should be useful for many purposes.