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Sympathetic Cooling of Lithium by Laser-cooled Cesium

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arxiv physics/0109069 v1 pith:4MCX4P4B submitted 2001-09-27 physics.atom-ph physics.gen-ph

S. Kraft , M. Mudrich , K. Singer , R. Grimm , A. Mosk , M. Weidemueller This is my paper
classification physics.atom-phphysics.gen-ph
keywords cesiumlithiumcoolingsympatheticallowedatomicatomscold
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abstract

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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