Differential cross sections for positronium formation in positron-hydrogen scattering

Mohamed Kamali, M.Z. and Ratnavelu, K. (2007) Differential cross sections for positronium formation in positron-hydrogen scattering. In: International Workshop on Low Energy Positron and Positronium Physics & XV International Symposium on Electron-Molecule Collisions and Swarms, 2-4 Aug 2007, Reading, UK. (In Press)


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Positron scattering by hydrogen atom is interesting system to test theoretical methods due to its simplicity. Recently, theoretical calculations have reported differential cross sections (DCS) for positronium (Ps) formation for this system. The present work utilises coupled-channel optical method (CCOM) that allows simultaneous treatment of the target channels and the Ps channels in the close-coupling-method and the incorporation of the continuum effects via an optical potential to provide a comparative view of the DCS for Ps(1s) formation and Ps(2s) formation at energies ranging from 20 to 100eV. A large 12-states and 15-states CCOM calculations have been undertaken and the results compared with other available data. Keywords: Positronium (Ps)formation; Differential cross section; Positron scattering

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Institute of Mathematical Sciences
Depositing User: Mr. Mohd Samsul Ismail
Date Deposited: 09 Apr 2014 23:58
Last Modified: 31 Dec 2014 09:01
URI: http://eprints.um.edu.my/id/eprint/8619

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