Low-energy positron interactions with xenon
Date
2011
Authors
Machacek, J. R.
Makochekanwa, C.
Jones, A. C. L.
Caradonna, P.
Slaughter, D. S.
McEachran, R. P.
Sullivan, J. P.
Buckman, Stephen J.
Bellm, Susan Mary
Lohmann, Birgit
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
New Journal of Physics, 2011; 13:125004
Statement of Responsibility
J 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 Stauffer
Conference Name
Abstract
Low-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.
School/Discipline
School of Chemistry and Physics
Dissertation Note
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Description
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© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft