Solving close-coupling equations in momentum space without singularities II

Bray, A. and Abdurakhmanov, I. and Kadyrov, A. and Fursa, D. and Bray, I. 2016. Solving close-coupling equations in momentum space without singularities II. Computer Physics Communications. 203: pp. 147-151.

Source Title

Computer Physics Communications

DOI

10.1016/j.cpc.2016.02.028

ISSN

0010-4655

School

Department of Physics and Astronomy

URI

http://hdl.handle.net/20.500.11937/5796

Collection

Curtin Research Publications

Abstract

The implementation of the convergent close-coupling method, whereby the principal-value singularity is treated analytically (Bray et al., 2015), has been extended to non-zero angular momenta. Its utility is demonstrated through application to proton scattering on excited states of positronium at incident energies spanning six orders of magnitude. It is shown that the analytic treatment is necessary in the case of highly excited positronium states.