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Protonium production in ATHENA / L Venturelli, 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. Van der Werf, A Variola, Y Yamazaki, N Zurlo, Dirk van der Werf

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume: 261, Issue: 1-2, Pages: 40 - 43

Swansea University Author: Dirk van der Werf

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Abstract

The ATHENA experiment at CERN, after producing cold antihydrogen atoms for the first time in 2002, has synthesised protonium atoms in vacuum at very low energies. Protonium, i.e. the antiproton–proton bound system, is of interest for testing fundamental physical theories. In the nested penning trap...

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Published in: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
ISSN: 0168-583X
Published: 2007
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa15940
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Abstract: The ATHENA experiment at CERN, after producing cold antihydrogen atoms for the first time in 2002, has synthesised protonium atoms in vacuum at very low energies. Protonium, i.e. the antiproton–proton bound system, is of interest for testing fundamental physical theories. In the nested penning trap of the ATHENA apparatus protonium has been produced as result of a chemical reaction between an antiproton and the simplest matter molecule, H2+. The formed protonium atoms have kinetic energies in the range 40–700 meV and are metastable with mean lifetimes of the order of 1 ls. Our result shows that it will be possible to start measurements on protonium at low energy antiproton facilities, such as the AD at CERN or FLAIR at GSI.
College: College of Science
Issue: 1-2
Start Page: 40
End Page: 43