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Journal Article

Strong evaporative cooling of a trapped cesium gas


Soding,  J.
Research Group of Computational Biology, MPI for Biophysical Chemistry, Max Planck Society;

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Guery-Odelin, D., Soding, J., Desbiolles, P., & Dalibard, J. (1998). Strong evaporative cooling of a trapped cesium gas. Optics Express, 2(8), 323-329. doi:10.1364/OE.2.000323.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0017-EDEE-1
Using forced radio-frequency evaporation, we have cooled cesium atoms prepared in the sublevel F = -mF = 3 and confined in a magnetic trap. At the end of the evaporation ramp, the sample contains ~ 7000 atoms at 80 nK, corresponding to a phase space density 3 × 10-2. A molecular dynamics approach, including the effect of gravity, gives a good account for the experimental data, assuming a scattering length larger than 300 Å.