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20 April 2024

» pubmed » pmid14995248

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Three-dimensional annihilation imaging of trapped antiprotons
M C Fujiwara ; M Amoretti ; G Bonomi ; A Bouchta ; P D Bowe ; C Carraro ; C L Cesar ; M Charlton ; M Doser ; V Filippini ; A Fontana ; R Funakoshi ; P Genova ; J S Hangst ; R S Hayano ; L V Jørgensen ; V Lagomarsino ; R Landua ; E Lodi-Rizzini ; M Marchesotti ; M Macri ; N Madsen ; G Manuzio ; P Montagna ; P Riedler ; A Rotondi ; G Rouleau ; G Testera ; A Variola ; D P van der Werf ; Y Yamazaki ; ;
Date:	13 Feb 2004
Journal:	Phys Rev Lett, 92 (6), 065005
Abstract:	We demonstrate three-dimensional imaging of antiprotons in a Penning trap, by reconstructing annihilation vertices from the trajectories of the charged annihilation products. The unique capability of antiparticle imaging has allowed, for the first time, the observation of the spatial distribution of the particle loss in a Penning trap. The radial loss of antiprotons on the trap wall is localized to small spots, strongly breaking the azimuthal symmetry expected for an ideal trap. Our observations have important implications for detection of antihydrogen annihilations.
Source:	PubMed, pmid14995248
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