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Convergent close-coupling approach to positron scattering on He+

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Abstract

A close-coupling method is used to generate electron-loss and total scattering cross sections for the first three partial waves with both a single-centre and two-centre expansion of the scattering wave function for positron scattering on He+. The two expansions are consistent with each other above the ionisation threshold verifying newly-developed positronium-formation matrix elements. Below the positronium-formation threshold both the single- and two-centre results agree with the elastic-scattering cross sections generated from the phase shifts reported in previous calculations.

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Authors and Affiliations

  1. Curtin Institute for Computation and Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia

    Charlie M. Rawlins, Alisher S. Kadyrov & Igor Bray

Authors
  1. Charlie M. Rawlins
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  2. Alisher S. Kadyrov
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  3. Igor Bray
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Corresponding author

Correspondence to Charlie M. Rawlins.

Additional information

Contribution to the Topical Issue “Low Energy Positron and Electron Interactions”, edited by James Sullivan, Ron White, Michael Bromley, Ilya Fabrikant, and David Cassidy.

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Rawlins, C.M., Kadyrov, A.S. & Bray, I. Convergent close-coupling approach to positron scattering on He+. Eur. Phys. J. D 72, 77 (2018). https://doi.org/10.1140/epjd/e2018-80615-0

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  • DOI: https://doi.org/10.1140/epjd/e2018-80615-0

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