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Positronium production and scattering below its break-up threshold

Brawley, SJ; Fayer, SE; Shipman, M; Laricchia, G; (2015) Positronium production and scattering below its break-up threshold. [Dataset]. UCL Department of Physics and Astronomy: London, UK. Green open access

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Abstract

Recent findings on the similarity between electron and positronium scattering at the same velocity [Brawley et al. Science 330 (2010) 789] have guided us towards the realization of a detectable flux of positronium atoms at beam energies five times lower than previously obtained, enabling total cross sections to be measured in the energy range \sim(1 -- 7)\,eV for the first time. In collision with Ar and Xe, the total cross-sections of positronium are found to be smallest at the lowest energy probed, approaching those of the Ramsauer-Townsend minima for electron projectiles. Additional structure has been observed in the case of positronium scattering at incident energies around 5\,eV.

Type: Dataset
Title: Positronium production and scattering below its break-up threshold
Open access status: An open access version is available from UCL Discovery
Publisher version: http://dx.doi.org/10.14324/000.ds.1472510
Additional information: Original data in figures 1 and 2 from the publication: S. J. Brawley, S. E. Fayer, M. Shipman, and G. Laricchia (2015)Positronium production and scattering below its break-up threshold, Physical Review Letters (in press)
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1472510
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