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Abstract
The UK molecular R-matrix method has been adapted to treat positron collisions from polyatomic targets. A simple empirical enhancement factor which corrects for the underestimation of electron–positron polarisation and correlation effects in the calculations performed with the static-plus-polarization model at low scattering energies is presented. Application of this model to positron scattering from carbon dioxide at energies below 8 eV is discussed. Introduction of the enhancement factor improves the integral cross sections significantly and introduces structures in the differential cross sections consistent with other studies. The prospects for a fully ab initio treatment of this problem are discussed.
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Authors (4)
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K Baluja
- University of Delhi Department of Physics and Astrophysics
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Rui Zhang
- University College London Department of Physics and Astronomy
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Jonathan Tennyson
- University College London Department of Physics and Astronomy
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
no. 266,
edition 3,
pages 419 - 424,
ISSN: 0168-583X - Language:
- English
- Publication year:
- 2008
- Bibliographic description:
- Franz J., Baluja K., Zhang R., Tennyson J.: Polarisation effects in low-energy positron–molecule scattering// NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. -Vol. 266, iss. 3 (2008), s.419-424
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.nimb.2007.12.055
- Verified by:
- Gdańsk University of Technology
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