Display options
Cite
Andresen GB, Ashkezari MD, Baquero-Ruiz M, et al. Trapped antihydrogen. Nature. 2010;468(7324):673-6doi: 10.1038/nature09610.
Andresen, G. B., Ashkezari, M. D., Baquero-Ruiz, M., Bertsche, W., Bowe, P. D., Butler, E., Cesar, C. L., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Gutierrez, A., Hangst, J. S., Hardy, W. N., Hayden, M. E., Humphries, A. J., Hydomako, R., Jenkins, M. J., Jonsell, S., Jørgensen, L. V., Kurchaninov, L., Madsen, N., Menary, S., Nolan, P., Olchanski, K., Olin, A., Povilus, A., Pusa, P., Robicheaux, F., Sarid, E., el Nasr, S. S., Silveira, D. M., So, C., Storey, J. W., Thompson, R. I., van der Werf, D. P., Wurtele, J. S., & Yamazaki, Y. (2010). Trapped antihydrogen. Nature, 468(7324), 673-6. https://doi.org/10.1038/nature09610
Andresen, G B, et al. "Trapped antihydrogen." Nature vol. 468,7324 (2010): 673-6. doi: https://doi.org/10.1038/nature09610
Andresen GB, Ashkezari MD, Baquero-Ruiz M, Bertsche W, Bowe PD, Butler E, Cesar CL, Chapman S, Charlton M, Deller A, Eriksson S, Fajans J, Friesen T, Fujiwara MC, Gill DR, Gutierrez A, Hangst JS, Hardy WN, Hayden ME, Humphries AJ, Hydomako R, Jenkins MJ, Jonsell S, Jørgensen LV, Kurchaninov L, Madsen N, Menary S, Nolan P, Olchanski K, Olin A, Povilus A, Pusa P, Robicheaux F, Sarid E, el Nasr SS, Silveira DM, So C, Storey JW, Thompson RI, van der Werf DP, Wurtele JS, Yamazaki Y. Trapped antihydrogen. Nature. 2010 Dec 02;468(7324):673-6. doi: 10.1038/nature09610. Epub 2010 Nov 17. PMID: 21085118.
Copy Download .nbib Format: NLM
Share it on

Nature. 2010 Dec 02;468(7324):673-6. doi: 10.1038/nature09610. Epub 2010 Nov 17.

Trapped antihydrogen.

Nature

G B Andresen, M D Ashkezari, M Baquero-Ruiz, W Bertsche, P D Bowe, E Butler, C L Cesar, S Chapman, M Charlton, A Deller, S Eriksson, J Fajans, T Friesen, M C Fujiwara, D R Gill, A Gutierrez, J S Hangst, W N Hardy, M E Hayden, A J Humphries, R Hydomako, M J Jenkins, S Jonsell, L V Jørgensen, L Kurchaninov, N Madsen, S Menary, P Nolan, K Olchanski, A Olin, A Povilus, P Pusa, F Robicheaux, E Sarid, S Seif el Nasr, D M Silveira, C So, J W Storey, R I Thompson, D P van der Werf, J S Wurtele, Y Yamazaki

Affiliations

  1. Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.

PMID: 21085118 DOI: 10.1038/nature09610

Abstract

Antimatter was first predicted in 1931, by Dirac. Work with high-energy antiparticles is now commonplace, and anti-electrons are used regularly in the medical technique of positron emission tomography scanning. Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN (the European Organization for Nuclear Research) since 2002. Antihydrogen is of interest for use in a precision test of nature's fundamental symmetries. The charge conjugation/parity/time reversal (CPT) theorem, a crucial part of the foundation of the standard model of elementary particles and interactions, demands that hydrogen and antihydrogen have the same spectrum. Given the current experimental precision of measurements on the hydrogen atom (about two parts in 10(14) for the frequency of the 1s-to-2s transition), subjecting antihydrogen to rigorous spectroscopic examination would constitute a compelling, model-independent test of CPT. Antihydrogen could also be used to study the gravitational behaviour of antimatter. However, so far experiments have produced antihydrogen that is not confined, precluding detailed study of its structure. Here we demonstrate trapping of antihydrogen atoms. From the interaction of about 10(7) antiprotons and 7 × 10(8) positrons, we observed 38 annihilation events consistent with the controlled release of trapped antihydrogen from our magnetic trap; the measured background is 1.4 ± 1.4 events. This result opens the door to precision measurements on anti-atoms, which can soon be subjected to the same techniques as developed for hydrogen.

References

  1. Rev Sci Instrum. 2009 Dec;80(12):123701 - PubMed
  2. Phys Rev Lett. 2005 Jul 8;95(2):025002 - PubMed
  3. Phys Rev Lett. 2005 Oct 7;95(15):155001 - PubMed
  4. Phys Rev B Condens Matter. 1986 Sep 1;34(5):3476-3479 - PubMed
  5. Phys Rev Lett. 2002 Nov 18;89(21):213401 - PubMed
  6. Phys Rev Lett. 2007 Jan 12;98(2):023402 - PubMed
  7. Phys Rev Lett. 2009 Oct 9;103(15):155001 - PubMed
  8. Phys Rev Lett. 2010 Jul 2;105(1):013003 - PubMed
  9. Phys Rev Lett. 1986 Nov 17;57(20):2504-2507 - PubMed
  10. Phys Rev Lett. 2000 Jun 12;84(24):5496-9 - PubMed
  11. Nature. 2002 Oct 3;419(6906):456-9 - PubMed
  12. Phys Rev Lett. 2008 May 23;100(20):203401 - PubMed
  13. Phys Rev Lett. 1989 Sep 25;63(13):1360-1363 - PubMed

Publication Types