Observation of a Zero-Energy Resonance in Cs-Cs Collisions
Journal Article
·
· Physical Review Letters
- Laboratoire Kastler Brossel, 24 rue Lhomond, F-75231 Paris CEDEX 05 (France)
We measure the cross section for s -wave collisions of Cs atoms in a magnetic trap. From the relaxation of the atomic cloud towards thermal equilibrium, we infer that the cross section varies as 1/T over the temperature range T=5{endash}60 {mu}K . It takes at each measured temperature the maximum allowed value for polarized bosons. This indicates a zero-energy resonance generated by a bound or virtual state less than 5 {mu}K from the dissociation threshold. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 527054
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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