Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Nonuniqueness in the close-coupling method for e-He scattering

Stelbovics, A.T. and Berge, L. (1997) Nonuniqueness in the close-coupling method for e-He scattering. Physical Review A - Atomic, Molecular, and Optical Physics, 55 (2). pp. 1028-1038.

[img]
Preview
PDF - Published Version
Download (215kB) | Preview
Link to Published Version: http://dx.doi.org/10.1103/PhysRevA.55.1028
*Subscription may be required

Abstract

We present a general analysis of the close-coupling equations for e-He scattering. We show why the standard close-coupling expansion gives rise to nonunique solutions and, by characterizing the manifold of nonunique solutions, are able to construct equations with a unique solution. Our analysis concentrates on two models of target states; a frozen-core model in which one of the electrons is restricted to the 1s He+ orbital, as has been used with great success recently, and also a model which uses full configuration-interaction target states. We develop modified close-coupling equations by projecting out spurious solutions. A subtle difference between frozen-core and configuration-interaction models with respect to the manner in which antisymmetrization is incorporated is noted. A calculation to illustrate the theory is presented.

Item Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Centre for Atomic, Molecular and Surface Physics
Publisher: The American Physical Society
Copyright: © 1997 American Physical Society
URI: http://researchrepository.murdoch.edu.au/id/eprint/36517
Item Control Page Item Control Page

Downloads

Downloads per month over past year