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,
a e-mail: email@example.com
Received in final form: 16 January 2018
Published online: 30 April 2018
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.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2018