Antihydrogen Formation using Cold Plasmas

Journal Article · Wed Oct 20 04:00:00 EDT 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1824852· OSTI ID:20630240

Madsen, N; Bowe, P D; Hangst, J S ^[1]; Amoretti, M; Carraro, C; Macri, M; Testera, G; Variola, A ^[2]; Amsler, C; Johnson, I; Pruys, H; Regenfus, C ^[3]; Bonomi, G; Bouchta, A; Doser, M; Kellerbauer, A; Landua, R ^[4]; Cesar, C L ^[5]; Charlton, M; Joergensen, L V ^[6]

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1. Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
2. Istituto Nazionale di Fisica Nucleare, Sezione di Genova, I-16146 Genova (Italy)
3. Physik-Institut, Zuerich University, CH-8057 Zurich (Switzerland)
4. PH Department, CERN, Geneva (Switzerland)
5. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21945-970 (Brazil)
6. Department of Physics, University of Wales Swansea, Swansea SA2 8PP (United Kingdom); and others

Antihydrogen, the antimatter counterpart of the hydrogen atom, can be formed by mixing cold samples of antiprotons and positrons. In 2002 the ATHENA collaboration succeeded in the first production of cold antihydrogen. By observing and imaging the annihilation products of the neutral, non-confined, antihydrogen atoms annihilating on the walls of the trap we can observe the production in quasi-real-time and study the dynamics of the formation mechanism. The formation mechanism strongly influences the final state of the formed antihydrogen atoms, important for future spectroscopic comparison with hydrogen. This paper briefly summarizes the current understanding of the antihydrogen formation in ATHENA.

• OSTI ID: 20630240
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 730; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANNIHILATION
ANTIPROTONS
COLD PLASMA
COMPARATIVE EVALUATIONS
HADRONIC ATOMS
HYDROGEN
MIXING
POSITRONS
TRAPS