A Novel High Precision Analytic Potential Function for Diatomic Molecules

A new analytical potential energy functions is presented, the potential energy function is examined by 13 examples of different diatomic molecules or ions——homonuclear ground-state for neutral diatomic molecules, heternuclear ground-state for charged diatomic molecular ion, heternuclear excitation-state neutral diatomic molecules ,heternuclear excited-state for charged diatomic molecular ion, homonuclear excited-state for neutral diatomic molecule , homonuclear excited-state for charged diatomic moleculeetc.. as a consequence, the theoretical values of the vibrational energy level of molecules calculated by the potential energy function are in high-precision consistent with RKR data (Rydberg-Klein-Rees) or experimental data.