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Magnetised positronium / D P van der Werf, C J Baker, D C S Beddows, P R Watkeys, C A Isaac, S J Kerrigan, M Charlton, H H Telle, Helmut Telle, Michael Charlton, Dirk van der Werf, Christopher Baker, Aled Isaac

Journal of Physics: Conference Series, Volume: 199

Swansea University Authors: Helmut Telle, Michael Charlton, Dirk van der Werf, Christopher Baker, Aled Isaac

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Abstract

Magnetised positronium is formed by impacting low energy positrons onto a gas covered target immersed in a magnetic field (B ≥ 1T). The resulting weakly bound positronium atoms subsequently travel some distance in an arrangement of Penning-type traps whereupon they can be field ionised. The remnant...

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Published in: Journal of Physics: Conference Series
ISSN: 1742-6596
Published: 2010
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URI: https://cronfa.swan.ac.uk/Record/cronfa7174
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Abstract: Magnetised positronium is formed by impacting low energy positrons onto a gas covered target immersed in a magnetic field (B ≥ 1T). The resulting weakly bound positronium atoms subsequently travel some distance in an arrangement of Penning-type traps whereupon they can be field ionised. The remnant positrons are accumulated and then detected by forced annihilation on the target. The production efficiency of the magnetised atoms has been measured for different species of gases, gas layer thickness and the strength of the magnetic field. The positronium loss as a function of the distance travelled has been measured and is shown to be caused by the magnetron drift of the positronium atom.
College: College of Science