Positron and positronium affinities in the work-formalism Hartree-Fock approximation

Rajendra R. Zope
1999 Physical Review A. Atomic, Molecular, and Optical Physics  
Positron binding to anions is investigated within the work formalism proposed by Harbola and Sahni for the halide anions and the systems Li^- through O^- excluding Be^- and N^-. The toal ground-state energies of the anion-positron bound systems are empirically found to be an upper bound to the Hartree-Fock energies. The computed expectation values as well as positron and positronium affinities are in good agreement with their restricted Hartree-Fock counterparts. Binding of a positron to
more » ... positron to neutral species is also investigated using an iterative method.
doi:10.1103/physreva.60.218 fatcat:n5nlwfwrpvaonlbly4zug34yoa