Sackett, C.A.Gerton, J.M.Welling, M.Hulet, R.G.2015-04-172015-04-171999Sackett, C.A., Gerton, J.M., Welling, M., et al.. "Measurements of Collective Collapse in a Bose-Einstein Condensate with Attractive Interactions." <i>Physical Review Letters,</i> 82, no. 5 (1999) American Physical Society: 876. http://dx.doi.org/10.1103/PhysRevLett.82.876.https://hdl.handle.net/1911/79457The occupation number of a magnetically trapped Bose-Einstein condensate is limited for atoms with attractive interactions. It has been predicted that, as this limit is approached, the condensate will collapse by a collective process. The measured spread in condensate number for samples of Li7 atoms undergoing thermal equilibration is consistent with the occurrence of such collapses.engArticle 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.Journal articlehttp://dx.doi.org/10.1103/PhysRevLett.82.876