Sympathetic Cooling of Lithium by Laser-cooled Cesium

Details Sympathetic Cooling of Lithium by Laser-cooled Cesium Sympathetic Cooling of Lithium by Laser-cooled Cesium

2001-09-27

arxiv.org/abs/physics/0109069v1

Physics

Atomic Physics

4 pages, proceedings of ICOLS 2001

Scientific paper

We present first indications of sympathetic cooling between two neutral, optically trapped atomic species. Lithium and cesium atoms are simultaneously stored in an optical dipole trap formed by the focus of a CO$_2$ laser, and allowed to interact for a given period of time. The temperature of the lithium gas is found to decrease when in thermal contact with cold cesium. The timescale of thermalization yields an estimate for the Li-Cs cross-section.

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