Threshold behavior of positronium formation in positron-alkali-metal scattering
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Open access
Authors
Lugovskoy, Andrey
Utamuratov, Ravshanbek
Kadyrov, Alisher
Stelbovics, Andris
Bray, Igor
Date
2013Type
Journal Article
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Lugovskoy, A.V. and Utamuratov, R. and Kadyrov, A.S. and Stelbovics, A.T. and Bray, I. 2013. Threshold behavior of positronium formation in positron-alkali-metal scattering. Physical Review A. 87 (4): pp. 042708 (4).
Source Title
Physical Review A
ISSN
Remarks
Copyright © 2013 by the American Physical Society
Collection
Abstract
We consider positron scattering on the alkali-metal atoms of Li, Na, and K at very low energies, where only the elastic scattering and positronium formation in the ground state are the two open channels. Utilizing the recently developed two-center convergent close-coupling method [ Lugovskoy, Kadyrov, Bray and Stelbovics, Phys. Rev. A 82 062708 (2010)] we investigate the behavior of the cross sections as the impact energy goes to zero and demonstrate their convergence. The study sets quantitative benchmarks for any rigorous theoretical treatment of the collision problems.