Low-energy positron interactions with xenon

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dc.contributor.authorMachacek, J. R.en
dc.contributor.authorMakochekanwa, C.en
dc.contributor.authorJones, A. C. L.en
dc.contributor.authorCaradonna, P.en
dc.contributor.authorSlaughter, D. S.en
dc.contributor.authorMcEachran, R. P.en
dc.contributor.authorSullivan, J. P.en
dc.contributor.authorBuckman, Stephen J.en
dc.contributor.authorBellm, Susan Maryen
dc.contributor.authorLohmann, Birgiten
dc.contributor.authorFursa, D. V.en
dc.contributor.authorBray, Igoren
dc.contributor.authorMueller, D. W.en
dc.contributor.authorStauffer, A. D.en
dc.contributor.schoolSchool of Chemistry and Physicsen
dc.date.issued2011en
dc.description.abstractLow-energy interactions of positrons with xenon have been studied both experimentally and theoretically. The experimental measurements were carried out using a trap-based positron beam with an energy resolution of ~80 meV, while the theoretical calculations were carried out using the convergent close-coupling method and the relativistic optical potential approach. Absolute values of the grand total, positronium formation and grand total minus positronium formation cross sections are presented over the energy range of 1–60 eV. Elastic differential cross sections (DCS), for selected energies, are also presented both below and above the positronium formation threshold. Fine energy-step measurements of the positronium formation cross section over the energy range of 4.4–8.4 eV, and measurements of the elastic DCS at the energies of 5.33 and 6.64 eV, have been carried out to investigate the ionization threshold regions corresponding to the 2P3/2 and 2P1/2 states of the Xe+ ion. The present results are compared with both experimental and theoretical values from the literature where available.en
dc.description.statementofresponsibilityJ R Machacek, C Makochekanwa, A C L Jones, P Caradonna, D S Slaughter, R P McEachran, J P Sullivan, S J Buckman, S Bellm, B Lohmann, D V Fursa, I Bray, D W Mueller and A D Staufferen
dc.identifier.citationNew Journal of Physics, 2011; 13:125004en
dc.identifier.doi10.1088/1367-2630/13/12/125004en
dc.identifier.issn1367-2630en
dc.identifier.urihttp://hdl.handle.net/2440/70369
dc.language.isoenen
dc.publisherInstitute of Physics Publishing Ltd.en
dc.rights© IOP Publishing Ltd and Deutsche Physikalische Gesellschaften
dc.titleLow-energy positron interactions with xenonen
dc.typeJournal articleen

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