Abstract

We present the positronium formation cross sections for a positron colliding with lithium and sodium for the collision energies from 0.01 eV up to 20 eV by the hyperspherical close-coupling method. For Li, our results agree with the experimental data and with other calculations. Our results for Na remain in agreement with previous close-coupling calculations, but do not support the latest experimental data for Na below 1 eV. To validate our model potentials and method in the low-energy regime, the binding energies of positronic lithium and positronic sodium as well as the s-wave scattering lengths for positronium scattering from Li⁺ and Na⁺ are also presented.

Department(s)

Physics

Keywords and Phrases

Adiabatic Equations; Hyperspherical Close Coupling (HSCC) Calcculations; Positronic Atoms; Positronium, Binding Energy; Electrodynamics; Electron Scattering; Lithium; Molecular Dynamics; Polarization; Potential Energy; Protons; Reaction Kinetics; Sodium, Positrons

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2005 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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