Improved Poschl-Teller potential energy model for diatomic molecules

摘要

By employing the dissociation energy and the equilibrium internuclear distance for a diatomic molecule as explicit parameters, we construct an improved Poschl-Teller potential energy model. We analyze the average absolute deviations of the improved Poschl-Teller and Morse potentials from the experimental Rydberg-Klein-Rees (RKR) potentials for six diatomic molecules. It is found that the improved Poschl-Teller potential is more accurate than the Morse potential in fitting experimental RKR potential curves over a large range of internuclear distances for six molecules examined.