Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions
dc.citation.firstpage | 1687 | en_US |
dc.citation.issueNumber | 9 | en_US |
dc.citation.journalTitle | Physical Review Letters | en_US |
dc.citation.lastpage | 1690 | en_US |
dc.citation.volumeNumber | 75 | en_US |
dc.contributor.author | Bradley, C.C. | en_US |
dc.contributor.author | Sackett, C.A. | en_US |
dc.contributor.author | Tollett, J.J. | en_US |
dc.contributor.author | Hulet, R.G. | en_US |
dc.contributor.org | Rice Quantum Institute | en_US |
dc.date.accessioned | 2015-03-30T19:07:12Z | |
dc.date.available | 2015-03-30T19:07:12Z | |
dc.date.issued | 1995 | en_US |
dc.description.abstract | Evidence for Bose-Einstein condensation of a gas of spin-polarized 7Li atoms is reported. Atoms confined to a permanent-magnet trap are laser cooled to 200 μK and are then evaporatively cooled to lower temperatures. Phase-space densities consistent with quantum degeneracy are measured for temperatures in the range of 100 to 400 nK. At these high phase-space densities, diffraction of a probe laser beam is observed. Modeling shows that this diffraction is a sensitive indicator of the presence of a spatially localized condensate. Although measurements of the number of condensate atoms have not been performed, the measured phase-space densities are consistent with a majority of the atoms being in the condensate, for total trap numbers as high as 2×10˄5 atoms. For 7Li, the spin-triplet s-wave scattering length is known to be negative, corresponding to an attractive interatomic interaction. Previously, Bose-Einstein condensation was predicted not to occur in such a system. | en_US |
dc.identifier.citation | Bradley, C.C., Sackett, C.A., Tollett, J.J., et al.. "Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions." <i>Physical Review Letters,</i> 75, no. 9 (1995) American Physical Society: 1687-1690. http://dx.doi.org/10.1103/PhysRevLett.75.1687. | |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevLett.75.1687 | en_US |
dc.identifier.uri | https://hdl.handle.net/1911/79442 | |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | |
dc.title | Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions | en_US |
dc.type | Journal article | en_US |
dc.type.dcmi | Text | en_US |
dc.type.publication | publisher version | en_US |
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