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Confinement of antihydrogen for 1,000 seconds
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2011 (English)In: Nature Physics, ISSN 1745-2473, E-ISSN 1745-2481, Vol. 7, no 7, 558-564 p.Article in journal (Refereed) Published
Abstract [en]

Atoms made of a particle and an antiparticle are unstable, usually surviving less than a microsecond. Antihydrogen, made entirely of antiparticles, is believed to be stable, and it is this longevity that holds the promise of precision studies of matter-antimatter symmetry. We have recently demonstrated trapping of antihydrogen atoms by releasing them after a confinement time of 172 ms. A critical question for future studies is: how long can anti-atoms be trapped? Here, we report the observation of anti-atom confinement for 1,000 s, extending our earlier results by nearly four orders of magnitude. Our calculations indicate that most of the trapped anti-atoms reach the ground state. Further, we report the first measurement of the energy distribution of trapped antihydrogen, which, coupled with detailed comparisons with simulations, provides a key tool for the systematic investigation of trapping dynamics. These advances open up a range of experimental possibilities, including precision studies of charge-parity-time reversal symmetry and cooling to temperatures where gravitational effects could become apparent.

Place, publisher, year, edition, pages
2011. Vol. 7, no 7, 558-564 p.
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Physical Sciences
URN: urn:nbn:se:su:diva-67010DOI: 10.1038/NPHYS2025ISI: 000292290000015OAI: diva2:469123
authorCount :40Available from: 2011-12-22 Created: 2011-12-22 Last updated: 2011-12-22Bibliographically approved

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Jonsell, Svante
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