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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

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

Swansea University Author: Dirk, van der Werf

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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: College of Science
Issue: 1-3
End Page: 105