Journal article
Convergent close-coupling calculations of positron–helium scattering at intermediate to high energies
Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.37(6), pp.1165-1172
2004
Abstract
The single-centred convergent close-coupling method has been applied to positron-helium scattering at energies from the first ionization threshold to 1 keV for calculating one-electron excitation and ionization processes. Total scattering, positronium formation plus single ionization (unresolved), and target excitation cross sections have been calculated. It is found that the often-used frozen-core approximation for the target structure leads to a small but systematic overestimation of the cross sections. Generally, the agreement between the present and most recent calculations, as well as experiment, is satisfactory.
Details
- Title
- Convergent close-coupling calculations of positron–helium scattering at intermediate to high energies
- Authors/Creators
- H. Wu (Author/Creator)I. Bray (Author/Creator)D.V. Fursa (Author/Creator)A.T. Stelbovics (Author/Creator)
- Publication Details
- Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.37(6), pp.1165-1172
- Publisher
- IOP Publishing Ltd
- Identifiers
- 991005540073607891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 2 Chemistry
- 2.15 Physical Chemistry
- 2.15.664 Dissociative Electron Attachment
- Web Of Science research areas
- Optics
- Physics, Atomic, Molecular & Chemical
- ESI research areas
- Physics