Production of antihydrogen at reduced magnetic field for anti-atom trapping

被引：36

作者：

Andresen, G. B. ^{[1
]}

Bertsche, W. ^{[2
,12
]}

Boston, A. ^{[3
]}

Bowe, P. D. ^{[1
]}

Cesar, C. L. ^{[4
]}

Chapman, S. ^{[2
]}

Charlton, M. ^{[5
]}

Chartier, M. ^{[3
]}

Deutsch, A. ^{[2
,13
]}

Fajans, J.

Fujiwara, M. C. ^{[6
]}

Funakoshi, R. ^{[7
]}

Gill, D. R. ^{[6
]}

Gomberoff, K. ^{[2
,13
,14
]}

Hangst, J. S. ^{[1
]}

Hayano, R. S. ^{[7
]}

Hydomako, R. ^{[8
]}

Jenkins, M. J. ^{[5
]}

Jorgensen, L. V. ^{[5
]}

Kurchaninov, L. ^{[6
]}

Madsen, N. ^{[5
]}

Nolan, P. ^{[3
]}

Olchanski, K. ^{[6
]}

Olin, A. ^{[6
]}

Page, R. D. ^{[3
]}

Povilus, A. ^{[2
]}

Robicheaux, F. ^{[9
]}

Sarid, E. ^{[10
]}

Silveira, D. M. ^{[4
]}

Storey, J. W. ^{[6
]}

Thompson, R. I. ^{[8
]}

van der Werf, D. P. ^{[5
]}

Wurtele, J. S. ^{[2
]}

Yamazaki, Y. ^{[11
]}

机构：

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

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[4] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil

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

[6] TRIUMF, Vancouver, BC V6T 2A3, Canada

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

[8] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

[9] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

[10] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel

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

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

[13] RAFAEL, IL-31021 Haifa, Israel

[14] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2008年 / 41卷 / 01期

基金：

英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

D O I：

10.1088/0953-4075/41/1/011001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have demonstrated production of antihydrogen in a 1 T solenoidal magnetic field. This field strength is significantly smaller than that used in the first generation experiments ATHENA (3 T) and ATRAP (5 T). The motivation for using a smaller magnetic field is to facilitate trapping of antihydrogen atoms in a neutral atom trap surrounding the production region. We report the results of measurements with the Antihydrogen Laser PHysics Apparatus (ALPHA) device, which can capture and cool antiprotons at 3 T, and then mix the antiprotons with positrons at 1 T. We infer antihydrogen production from the time structure of antiproton annihilations during mixing, using mixing with heated positrons as the null experiment, as demonstrated in ATHENA. Implications for antihydrogen trapping are discussed.

引用

页数：5

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