Ionization energies of tungsten ions: W 2+ through W 71+

Abstract

A semi-empirical method is used to determine ionization energies of multiply charged tungsten ions, W 2+ through W 71+. The method is based on Hartree-Fock calculations of electron binding energies scaled according to experimental results. The relative uncertainties vary from 1.7% for W 2+ to 0.015% for W 71+. The resulting values are tabulated with results of experiments and precise theoretical calculations in a list of ionization energies for tungsten in all stages of ionization, W through W 73+.