Low-energy positron interactions with xenon

J R Machacek; C Makochekanwa; A C L Jones; P Caradonna; D S Slaughter; R P McEachran; J P Sullivan; S J Buckman; S M Bellm; Birgit Lohmann; D V Fursa; I Bray; D W Mueller; A D Stauffer

doi:10.1088/1367-2630/13/12/125004

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Low-energy positron interactions with xenon

Journal article

Open access

Peer reviewed

Low-energy positron interactions with xenon

J R Machacek, C Makochekanwa, A C L Jones, P Caradonna, D S Slaughter, R P McEachran, J P Sullivan, S J Buckman, S M Bellm, Birgit Lohmann, …

New Journal of Physics, Vol.13(12), 125004

2011

DOI: https://doi.org/10.1088/1367-2630/13/12/125004

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Abstract

positrons

xenon

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.

Details

Title: Low-energy positron interactions with xenon
Authors: J R Machacek (Author) - Australian National University
C Makochekanwa (Author) - Australian National University
A C L Jones (Author) - Australian National University
P Caradonna (Author) - Australian National University
D S Slaughter (Author) - Australian National University
R P McEachran (Author) - Australian National University
J P Sullivan (Author) - Australian National University
S J Buckman (Author) - Australian National University
S M Bellm (Author) - University of Adelaide
Birgit Lohmann (Author) - University of Adelaide
D V Fursa (Author) - Curtin University of Technology
I Bray (Author) - Curtin University of Technology
D W Mueller (Author) - University of North Texas, United States
A D Stauffer (Author) - York University, Canada
Publication details: New Journal of Physics, Vol.13(12), 125004; 20
Publisher: Institute of Physics Publishing Ltd.
Date published: 2011
DOI: 10.1088/1367-2630/13/12/125004
ISSN: 1367-2630
Copyright note: Copyright © 2011. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.
Organisation Unit: Office of the Deputy Vice-Chancellor (Academic); University of the Sunshine Coast, Queensland; Thompson Institute
Language: English
Record Identifier: 99449524202621
Output Type: Journal article

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