Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production

被引：25

作者：

Baker, C. J. ^{[1
]}

Bertsche, W. ^{[2
,3
]}

Capra, A. ^{[4
]}

Cesar, C. L. ^{[5
]}

Charlton, M. ^{[1
]}

Mathad, A. Cridland ^{[1
]}

Eriksson, S. ^{[1
]}

Evans, A. ^{[6
]}

Evetts, N. ^{[7
]}

Fabbri, S. ^{[2
]}

Fajans, J. ^{[8
]}

Friesen, T. ^{[6
]}

Fujiwara, M. C. ^{[4
]}

Grandemange, P. ^{[4
]}

Granum, P. ^{[9
]}

Hangst, J. S. ^{[9
]}

Hayden, M. E. ^{[10
]}

Hodgkinson, D. ^{[2
]}

Isaac, C. A. ^{[1
]}

Johnson, M. A. ^{[2
]}

Jones, J. M. ^{[1
]}

Jones, S. A. ^{[9
]}

Jonsell, S. ^{[11
]}

Kurchaninov, L. ^{[4
]}

Madsen, N. ^{[1
]}

Maxwell, D. ^{[1
]}

McKenna, J. T. K. ^{[9
]}

Menary, S. ^{[12
]}

Momose, T. ^{[7
]}

Mullan, P. ^{[1
]}

Olchanski, K. ^{[4
]}

Olin, A. ^{[4
]}

Peszka, J. ^{[1
]}

Powell, A. ^{[6
]}

Pusa, P. ^{[13
]}

Rasmussen, C. O. ^{[14
]}

Robicheaux, F. ^{[15
]}

Sacramento, R. L. ^{[5
]}

Sameed, M. ^{[2
]}

Sarid, E. ^{[16
,17
]}

Silveira, D. M. ^{[5
]}

Stutter, G. ^{[9
]}

So, C. ^{[6
]}

Tharp, T. D. ^{[18
]}

Thompson, R., I ^{[6
]}

van der Werf, D. P. ^{[1
]}

Wurtele, J. S. ^{[8
]}

机构：

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

[2] Univ Manchester, Sch Phys & Astron, Manchester M12 9PL, Lancs, England

[3] Cockcroft Inst, Sci Tech Daresbury, Warrington WA4 4AD, Cheshire, England

[4] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

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

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

[7] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

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

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

[10] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[11] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden

[12] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

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

[14] CERN, Expt Phys Dept, CH-1211 Geneva, Switzerland

[15] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[16] Soreq NRC, IL-81800 Yavne, Israel

[17] Ben Gurion Univ Negev, Dept Phys, IL-8410501 Beer Sheva, Israel

[18] Marquette Univ, Phys Dept, POB 1881, Milwaukee, WI 53201 USA

来源：

NATURE COMMUNICATIONS | 2021年 / 12卷 / 01期

基金：

英国工程与自然科学研究理事会; 加拿大自然科学与工程研究理事会; 英国科学技术设施理事会;

关键词：

NONNEUTRAL PLASMAS;

D O I：

10.1038/s41467-021-26086-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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. Positrons are key to the production of cold antihydrogen. Here the authors report the sympathetic cooling of positrons by interacting them with laser-cooled Be+ ions resulting in a three-fold reduction of the temperature of positrons for antihydrogen synthesis.

引用

页数：8

共 40 条

[11] Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector [J].

Andresen, G. B. ;

Bertsche, W. ;

Bowe, P. D. ;

Bray, C. C. ;

Butler, E. ;

Cesar, C. L. ;

Chapman, S. ;

Charlton, M. ;

Fajans, J. ;

Fujiwara, M. C. ;

Gill, D. R. ;

Hangst, J. S. ;

Hardy, W. N. ;

Hayano, R. S. ;

Hayden, M. E. ;

Humphries, A. J. ;

Hydomako, R. ;

Jorgensen, L. V. ;

Kerrigan, S. J. ;

Kurchaninov, L. ;

Lambo, R. ;

Madsen, N. ;

Nolan, P. ;

Olchanski, K. ;

Olin, A. ;

Povilus, A. P. ;

Pusa, P. ;

Sarid, E. ;

Nasr, S. Seif El ;

Silveira, D. M. ;

Storey, J. W. ;

Thompson, R. I. ;

van der Werf, D. P. ;

Yamazaki, Y. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2009, 80 (12)

[12] Compression of antiproton clouds for antihydrogen trapping [J].

Andresen, G. B. ;

Bertsche, W. ;

Bowe, P. D. ;

Bray, C. C. ;

Butler, E. ;

Cesar, C. L. ;

Chapman, S. ;

Charlton, M. ;

Fajans, J. ;

Fujiwara, M. C. ;

Funakoshi, R. ;

Gill, D. R. ;

Hangst, J. S. ;

Hardy, W. N. ;

Hayano, R. S. ;

Hayden, M. E. ;

Hydomako, R. ;

Jenkins, M. J. ;

Jorgensen, L. V. ;

Kurchaninov, L. ;

Lambo, R. ;

Madsen, N. ;

Nolan, P. ;

Olchanski, K. ;

Olin, A. ;

Povilus, A. ;

Pusa, P. ;

Robicheaux, F. ;

Sarid, E. ;

El Nasr, S. Seif ;

Silveira, D. M. ;

Storey, J. W. ;

Thompson, R. I. ;

van der Werf, D. P. ;

Wurtele, J. S. ;

Yamazaki, Y. .

PHYSICAL REVIEW LETTERS, 2008, 100 (20)

[13]

Bailey D.L., 2005, Positron Emission Tomography, V2

[14] Sympathetic cooling of 9Be+ and 24Mg+ for quantum logic -: art. no. 042302 [J].

Barrett, MD ;

DeMarco, B ;

Schaetz, T ;

Meyer, V ;

Leibfried, D ;

Britton, J ;

Chiaverini, J ;

Itano, WM ;

Jelenkovic, B ;

Jost, JD ;

Langer, C ;

Rosenband, T ;

Wineland, DJ .

PHYSICAL REVIEW A, 2003, 68 (04)

[15] Production of antihydrogen [J].

Baur, G ;

Boero, G ;

Brauksiepe, S ;

Buzzo, A ;

Eyrich, W ;

Geyer, R ;

Grzonka, D ;

Hauffe, J ;

Kilian, K ;

LoVetere, M ;

Macri, M ;

Moosburger, M ;

Nellen, R ;

Oelert, W ;

Passaggio, S ;

Pozzo, A ;

Rohrich, K ;

Sachs, K ;

Schepers, G ;

Sefzick, T ;

Simon, RS ;

Stratmann, R ;

Stinzing, F ;

Wolke, M .

PHYSICS LETTERS B, 1996, 368 (03) :251-258

[16]

Butler E., 2011, THESIS SWANSEA U

[17] Torque-balanced high-density steady states of single-component plasmas [J].

Danielson, JR ;

Surko, CM .

PHYSICAL REVIEW LETTERS, 2005, 94 (03)

[18] EVIDENCE FOR THE FORMATION OF POSITRONIUM IN GASES [J].

DEUTSCH, M .

PHYSICAL REVIEW, 1951, 82 (03) :455-456

[19] A theory of electrons and protons [J].

Dirac, PAM .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1930, 126 (801) :360-364

[20] Trapped nonneutral plasmas, liquids, and crystals (the thermal equilibrium states) [J].

Dubin, DHE ;

O'Neil, TM .

REVIEWS OF MODERN PHYSICS, 1999, 71 (01) :87-172

← 1 2 3 4 →