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Production of slow protonium in vacuum

N Zurlo, M Amoretti, C Amsler, G Bonomi, C Carraro, C. L Cesar, M Charlton, M Doser, A Fontana, R Funakoshi, P Genova, R. S Hayano, L. V Jørgensen, A Kellerbauer, V Lagomarsino, R Landua, E. Lodi Rizzini, M Macrì, N Madsen, G Manuzio, D Mitchard, P Montagna, L. G Posada, H Pruys, C Regenfus, A Rotondi, G Testera, D. P Werf, A Variola, L Venturelli, Y Yamazaki, Dirk van der Werf Orcid Logo

Hyperfine Interactions, Volume: 172, Issue: 1-3

Swansea University Author: Dirk van der Werf Orcid Logo

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Abstract

We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H2+ in a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events in the ATH...

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Published in: Hyperfine Interactions
ISSN: 0304-3843 1572-9540
Published: 2006
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa15975
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Abstract: We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H2+ in a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events in the ATHENA experiment, evidence is presented for protonium production with sub-eV kinetic energies in states around n = 70, with low angular momenta. This work provides a new two-body system for studies using laser spectroscopic techniques.
College: Faculty of Science and Engineering
Issue: 1-3
End Page: 105