Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production

被引：0
作者：
C. J. Baker
W. Bertsche
A. Capra
C. L. Cesar
M. Charlton
A. Cridland Mathad
S. Eriksson
A. Evans
N. Evetts
S. Fabbri
J. Fajans
T. Friesen
M. C. Fujiwara
P. Grandemange
P. Granum
J. S. Hangst
M. E. Hayden
D. Hodgkinson
C. A. Isaac
M. A. Johnson
J. M. Jones
S. A. Jones
S. Jonsell
L. Kurchaninov
N. Madsen
D. Maxwell
J. T. K. McKenna
S. Menary
T. Momose
P. Mullan
K. Olchanski
A. Olin
J. Peszka
A. Powell
P. Pusa
C. Ø. Rasmussen
F. Robicheaux
R. L. Sacramento
M. Sameed
E. Sarid
D. M. Silveira
G. Stutter
C. So
T. D. Tharp
R. I. Thompson
D. P. van der Werf
J. S. Wurtele
机构：
[1] Swansea University,Department of Physics, College of Science
[2] University of Manchester,School of Physics and Astronomy
[3] Sci-Tech Daresbury,Cockcroft Institute
[4] TRIUMF,Instituto de Fisica
[5] Universidade Federal do Rio de Janeiro,Department of Physics and Astronomy
[6] University of Calgary,Department of Physics and Astronomy
[7] University of British Columbia,Department of Physics
[8] University of California at Berkeley,Department of Physics and Astronomy
[9] Aarhus University,Department of Physics
[10] Simon Fraser University,Department of Physics
[11] Stockholm University,Department of Physics and Astronomy
[12] York University,Department of Physics
[13] University of Liverpool,Experimental Physics Department
[14] CERN,Department of Physics and Astronomy
[15] Purdue University,Department of Physics
[16] Soreq NRC,Physics Department
[17] Ben Gurion University,undefined
[18] Marquette University,undefined
来源：
Nature Communications | / 12卷
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摘要：
The positron, the antiparticle of the electron, predicted by Dirac in 1931 and discovered by Anderson in 1933, plays a key role in many scientific and everyday endeavours. Notably, the positron is a constituent of antihydrogen, the only long-lived neutral antimatter bound state that can currently be synthesized at low energy, presenting a prominent system for testing fundamental symmetries with high precision. Here, we report on the use of laser cooled Be+ ions to sympathetically cool a large and dense plasma of positrons to directly measured temperatures below 7 K in a Penning trap for antihydrogen synthesis. This will likely herald a significant increase in the amount of antihydrogen available for experimentation, thus facilitating further improvements in studies of fundamental symmetries.
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