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Positron-electron correlation-polarization potentials for the calculation of positron collisions with atoms and molecules
Abstract
We present correlation-polarization potentials for the calculation of scattering cross sections of positrons with atoms and molecules. The potentials are constructed from a short-range correlation term and a long-range polarization term. For the short-range correlation term we present four different potentials that are derived from multi-component density functionals. For the long-range polarization term we employ a multi-term expansion. Quantum scattering calculations are presented for low energy collisions of positrons with two atomic targets (argon and krypton) and two molecular targets (nitrogen and methane). For collision energies below the threshold for Positronium formation our calculations of scattering cross sections are in good agreement with recent data sets from experiments and theory.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1140/epjd/e2017-70591-2
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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EUROPEAN PHYSICAL JOURNAL D
no. 21,
edition 2,
pages 1 - 11,
ISSN: 1434-6060 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Franz J.: Positron-electron correlation-polarization potentials for the calculation of positron collisions with atoms and molecules// EUROPEAN PHYSICAL JOURNAL D. -Vol. 21, iss. 2 (2017), s.1-11
- DOI:
- Digital Object Identifier (open in new tab) 10.1140/epjd/e2017-70591-2
- Verified by:
- Gdańsk University of Technology
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