Trapped Antihydrogen in Its Ground State

被引：159

作者：

Gabrielse, G. ^{[1
]}

Kalra, R. ^{[1
]}

Kolthammer, W. S. ^{[1
]}

McConnell, R. ^{[1
]}

Richerme, P. ^{[1
]}

Grzonka, D. ^{[2
]}

Oelert, W. ^{[2
]}

Sefzick, T. ^{[2
]}

Zielinski, M. ^{[2
]}

Fitzakerley, D. W. ^{[3
]}

George, M. C. ^{[3
]}

Hessels, E. A. ^{[3
]}

Storry, C. H. ^{[3
]}

Weel, M. ^{[3
]}

Muellers, A. ^{[4
,5
]}

Walz, J. ^{[4
,5
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Forschungszentrum Julich, IKP, D-52425 Julich, Germany

[3] York Univ, Dept Phys & Astron, N York, ON M3J 1P3, Canada

[4] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[5] Helmholtz Inst Mainz, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 11期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

SPECTROSCOPY; ATOMS;

D O I：

10.1103/PhysRevLett.108.113002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Antihydrogen atoms ((H) over bar) are confined in an Ioffe trap for 15-1000 s-long enough to ensure that they reach their ground state. Though reproducibility challenges remain in making large numbers of cold antiprotons ((p) over bar) and positrons (e(+)) interact, 5 +/- 1 simultaneously confined ground-state atoms are produced and observed on average, substantially more than previously reported. Increases in the number of simultaneously trapped (H) over bar are critical if laser cooling of trapped (H) over bar is to be demonstrated and spectroscopic studies at interesting levels of precision are to be carried out.

引用

页数：4

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