Positronium formation in positron-Li and positron-Na collisions at low energies

Anh-Thu Le, M. W. J. Bromley, and C. D. Lin
Phys. Rev. A 71, 032713 – Published 18 March 2005

Abstract

We present the positronium formation cross sections for a positron colliding with lithium and sodium for the collision energies from 0.01eV up to 20eV 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 1eV. 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.

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  • Received 21 September 2004

DOI:https://doi.org/10.1103/PhysRevA.71.032713

©2005 American Physical Society

Authors & Affiliations

Anh-Thu Le*, M. W. J. Bromley, and C. D. Lin

  • Department of Physics, Cardwell Hall, Kansas State University, Manhattan, Kansas 66506, USA

  • *Electronic address: atle@phys.ksu.edu
  • Faculty of Technology, Charles Darwin University, Darwin, NT 0909, Australia.

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Issue

Vol. 71, Iss. 3 — March 2005

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