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

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

1999-06-24

arxiv.org/abs/physics/9906047v1

Physics

Atomic Physics

12 pages, to appear in Physical Review A

Scientific paper

10.1103/PhysRevA.60.218

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 neutral species is also investigated using an iterative method.

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