https://doi.org/10.1140/epjd/e2018-80615-0
Regular Article
Convergent close-coupling approach to positron scattering on He+★
Curtin Institute for Computation and Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University,
GPO Box U1987,
Perth,
WA
6845, Australia
a e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
27
August
2017
Received in final form:
16
January
2018
Published online: 30
April
2018
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.
Contribution to the Topical Issue “Low Energy Positron and Electron Interactions”, edited by James Sullivan, Ron White, Michael Bromley, Ilya Fabrikant, and David Cassidy.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2018
