A Universal Value for the Charge-Transfer States of Different Alkali-Halide Molecules

The scaled potentials were used to discuss the vibrational quantum defects of alkali-halide molecules by using the fully quantal Milne equation method and the quasiclassical Wentzell-Kramers-Briilouin approximation. This allowed us to obtain a universal function and its limit value for the charge-transfer states of different alkali-halide molecules.