Three-dimensional annihilation imaging of trapped antiprotons

被引：49

作者：

Fujiwara, MC ^{[1
]}

Amoretti, M

Bonomi, G

Bouchta, A

Bowe, PD

Carraro, C

Cesar, CL

Charlton, M

Doser, M

Filippini, V

Fontana, A

Funakoshi, R

Genova, P

Hangst, JS

Hayano, RS

Jorgensen, LV

Lagomarsino, V

Landua, R

Lodi-Rizzini, E

Marchesotti, M

Macri, M

Madsen, N

Manuzio, G

Montagna, P

Riedler, P

Rotondi, A

Rouleau, G

Testera, G

Variola, A

van der Werf, DP

Yamazaki, Y

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[2] RIKEN, Atom Phys Lab, Saitama 3510198, Japan

[3] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[4] CERN, Div EP, CH-1211 Geneva, Switzerland

[5] Univ Coll Swansea, Dept Phys, Swansea SA2 8PP, W Glam, Wales

[6] Dipartimento Fis Genova, I-16146 Genoa, Italy

[7] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

[8] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[9] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[10] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[11] Dipartimento Chim & Fis Ingn & Mat, I-25123 Brescia, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.92.065005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：5

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