A comparative study of the ion-sphere and debye-huckel potentials

Abstract

Numerical eigenvalues, critical screening lenghts, and bound-bound dipole oscillator strengths have been computed using an ion-sphere potential (ISP) and compared with those computed using the Debye-Huckel potential (DHP). Although the ISP supports a significantly smaller number of bound levels than the DHP, the highest excited states for both potentials have binding energies which are smaller than plasmon energies. Therefore, collective atomic transitions in dense plasmas involving excited states of these screened Coulomb potentials are energetically allowed.