Asymptotic and interpolation series for the Coulomb three-body systems with unit charges
arXiv:1901.10749 · doi:10.1016/j.cplett.2019.03.016
Abstract
Accurate mass-interpolation and mass-asymptotic formulas are derived for one- and two-center three-body ions with unit charges. The derived formulas are applied to predict accurate numerical values of the total energies of the ground (bound) states in one-center atomic ions and analogous ground (bound) states in the two-center, quasi-adiabatic (or quasi-molecular) ions. We also discuss a few problems which currently remain unsolved for the expansions constructed for the ground (bound) states in few-electron atoms and ions.