Journal article
Nonuniqueness in the close-coupling method for e-He scattering
Physical Review A - Atomic, Molecular, and Optical Physics, Vol.55(2), pp.1028-1038
1997
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.
Details
- Title
- Nonuniqueness in the close-coupling method for e-He scattering
- Authors/Creators
- A.T. Stelbovics (Author/Creator)L. Berge (Author/Creator)
- Publication Details
- Physical Review A - Atomic, Molecular, and Optical Physics, Vol.55(2), pp.1028-1038
- Publisher
- The American Physical Society
- Identifiers
- 991005540775907891
- Copyright
- © 1997 American Physical Society
- Murdoch Affiliation
- School of Mathematical and Physical Sciences; Centre for Atomic, Molecular and Surface Physics
- Language
- English
- Resource Type
- Journal article
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