Observation of a shape resonance in the collision of two cold [Formula Presented] atoms

H. M.J.M. Boesten, C. C. Tsai, J. R. Gardner, D. J. Heinzen, B. J. Verhaar

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110 Citations (Scopus)


We observe a shape resonance in the scattering of two ultracold [Formula Presented] atoms, causing the colliding atoms to form a long-living compound system inside an l=2 centrifugal barrier. Its existence follows from a photoassociation experiment in a gas sample of doubly polarized [Formula Presented] atoms. Using it we are able to carry out direct determinations of the triplet scattering length for [Formula Presented], relevant to Bose-Einstein condensation experiments, and of the Rb+Rb [Formula Presented] dispersion coefficient. Consequences for the [Formula Presented] scattering length are discussed.

Original languageEnglish
Pages (from-to)636-640
Number of pages5
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
Publication statusPublished - 1997

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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