Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production
| Autor: | T. D. Tharp, A. Evans, D. M. Silveira, N. Evetts, P. S. Mullan, Joel Fajans, G. Stutter, D. Hodgkinson, K. Olchanski, Jonathan Wurtele, Niels Madsen, M. C. Fujiwara, A. Powell, Francis Robicheaux, J. Peszka, P. Grandemange, M. Sameed, A. Capra, C. L. Cesar, T. Friesen, J. M. Jones, A. Olin, D. P. van der Werf, C. A. Isaac, J. T. K. McKenna, P. Granum, M. A. Johnson, J. S. Hangst, Leonid Kurchaninov, M. Charlton, S. Fabbri, R. L. Sacramento, Takamasa Momose, C. Ø. Rasmussen, C. J. Baker, Robert Thompson, S. Menary, Petteri Pusa, Chukman So, Svante Jonsell, Michael E. Hayden, W. Bertsche, A. Cridland Mathad, S. A. Jones, D. Maxwell, E. Sarid, Stefan Eriksson |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Antiparticle
Sympathetic cooling Physics::General Physics Science General Physics and Astronomy Electron Article General Biochemistry Genetics and Molecular Biology Plasma physics Nuclear physics Positron Physics::Plasma Physics Physics::Atomic and Molecular Clusters Physics::Atomic Physics Detectors and Experimental Techniques Antihydrogen Physics Multidisciplinary Atomic and molecular interactions with photons General Chemistry Plasma Penning trap Optical manipulation and tweezers Antimatter Physics::Accelerator Physics High Energy Physics::Experiment Exotic atoms and molecules |
| Zdroj: | NATURE COMMUNICATIONS ALPHA Collaboration 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, no. 1, 6139 . https://doi.org/10.1038/s41467-021-26086-1 Baker, C J, Bertsche, W, Capra, A, Cesar, C L, Charlton, M, Mathad, A C, Eriksson, S, Evans, A, Evetts, N, Fabbri, S, Fajans, J, Friesen, T, Fujiwara, M C, Grandemange, P, Granum, P, Hangst, J S, Hayden, M E, Hodgkinson, D, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Momose, T, Mullan, P, Olchanski, K, Olin, A, Peszka, J, Powell, A, Pusa, P, Rasmussen, C, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Stutter, G, So, C, Tharp, T D, Thompson, R I, van der Werf, D P & Wurtele, J S 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, 6139 . https://doi.org/10.1038/s41467-021-26086-1 Nature communications, vol 12, iss 1 Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021) Nature Communications |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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