Positronium formation from Li and Na atoms by use of pseudopotentials
- 1 June 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 35 (11) , 4533-4540
- https://doi.org/10.1103/physreva.35.4533
Abstract
The differential and total cross sections for the formation of positronium in its ground state from Li and Na atoms by the impact of intermediate-energy positrons are calculated in the first Born and distorted-wave Born approximations. Hellmann-type pseudopotentials are used to represent the alkali-metal ion cores. The difference in the use of pseudopotentials and the static potential for the core representation for evaluating various rearrangement cross sections is discussed.Keywords
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