Chemical stability of positronic complexes with atoms and atomic ions
- 1 October 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 30 (4), 1624-1628
- https://doi.org/10.1103/physreva.30.1624
Abstract
A simple theory for establishing the stability or instability of positron-atomic systems against dissociation is presented. The theory consists of assuming that Morse-potential parameters for protonic diatoms are transferrable to the corresponding positronic molecules, and making appropriate reduced-mass modifications in the calculation of binding energies. The surprisingly good reliability of the method is established by appealing to the well-known positronium affinities of atomic hydrogen and fluorine. Positronium (Ps) binding is found for about half of the 42 atoms tested. In addition, instability is indicated for all nine positron-atom systems tested, and stability is indicated for seven of eight negatively charged systems tested; e.g., Ps.
Keywords
This publication has 36 references indexed in Scilit:
- Restricted Hartree–Fock wave functions for positron/anion [A−;e+] and positron/atom [A;e+] systemsThe Journal of Chemical Physics, 1981
- Positron Annihilation in Graphite Intercalation CompoundsPhysical Review Letters, 1981
- Potential energies and rainbow angle scattering cross sections for NaH+and KH+Journal of Physics B: Atomic and Molecular Physics, 1980
- Molecular beam scattering studies of orbiting resonances and the determination of van der Waals potentials for H–Ne, Ar, Kr, and Xe and for H2–Ar, Kr, and XeThe Journal of Chemical Physics, 1979
- A resonant state and the ground state of positronium hydridePhysical Review A, 1978
- Configuration-interaction-Hylleraas calculations on one-positron atomic systemsJournal of Physics B: Atomic and Molecular Physics, 1976
- Positron Annihilation in Helium and the System of e+ He Bound StateThe Journal of Chemical Physics, 1970
- The polarization of a closed-shell core of an atomic system by an outer electron I. A correction to the adiabatic approximationProceedings of the Physical Society, 1967
- ANNIHILATION OF POSITRONS IN LIQUID HELIUM AND THE POSITRON–HELIUM BOUND STATECanadian Journal of Physics, 1964
- On the Angular Distribution of Two-Photon Annihilation RadiationPhysical Review B, 1950