Adiabatic potentials for alkali–inert gas systems in the ground state

We have developed perturbative expressions for the adiabatic potential for alkali–inert gas systems. The predictions of the model for the equilibrium separation Rm and the minimum potential εm are in good agreement with the experimental values. The model provides a unified approach to the interaction potential which indicates a conformal structure for some groups, implying a useful relation between Rm, εm, and van der Waals constant C6.