1. Production of Slow Protonium in Vacuum
- Author
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Zurlo, N., Amoretti, M., Amsler, C., Bonomi, G., Carraro, C., Cesar, C. L., Charlton, M., Doser, M., Fontana, A., Funakoshi, R., Genova, P., Hayano, R. S., Jorgensen, L. V., Kellerbauer, A., Lagomarsino, V., Landua, R., Rizzini, E. Lodi, Macri', M., Madsen, N., Manuzio, G., Mitchard, D., Montagna, P., Posada, L. G., Pruys, H., Regenfus, C., Rotondi, A., Testera, G., Van der Werf, D. P., Variola, A., Venturelli, L., and Yamazaki, Y.
- Subjects
High Energy Physics - Experiment - Abstract
We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H$_2^+$ 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 2-body system for study using laser spectroscopic techniques., Comment: 9 pages with 5 figures and 1 table. Proceedings of the 4th International Conference on Trapped Charged Particles and Fundamental Physics (TCP 06), published in Hyperfine Interactions
- Published
- 2008
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