dorsal/arxiv
View SchemaSympathetic Cooling with Two Atomic Species in an Optical Trap
| Authors | M. Mudrich, S. Kraft, K. Singer, R. Grimm, A. Mosk, M. Weidemuller |
|---|---|
| Categories | |
| ArXiv ID | physics/0111213 |
| URL | https://arxiv.org/abs/physics/0111213 |
| DOI | 10.1103/PhysRevLett.88.253001 |
| Journal | Phys. Rev. Lett. 88, 253001 (2002). |
Abstract
We simultaneously trap ultracold lithium and cesium atoms in an optical dipole trap formed by the focus of a CO$_2$ laser and study the exchange of thermal energy between the gases. The cesium gas, which is optically cooled to $20 \mu$K, efficiently decreases the temperature of the lithium gas through sympathetic cooling. The measured cross section for thermalizing $^{133}$Cs-$^7$Li collisions is $8 \times 10^{-12}$ cm$^2$, for both species in their lowest hyperfine ground state. Besides thermalization, we observe evaporation of lithium purely through elastic cesium-lithium collisions (sympathetic evaporation).
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"abstract": "We simultaneously trap ultracold lithium and cesium atoms in an optical\ndipole trap formed by the focus of a CO$_2$ laser and study the exchange of\nthermal energy between the gases. The cesium gas, which is optically cooled to\n$20 \\mu$K, efficiently decreases the temperature of the lithium gas through\nsympathetic cooling. The measured cross section for thermalizing\n$^{133}$Cs-$^7$Li collisions is $8 \\times 10^{-12}$ cm$^2$, for both species in\ntheir lowest hyperfine ground state. Besides thermalization, we observe\nevaporation of lithium purely through elastic cesium-lithium collisions\n(sympathetic evaporation).",
"arxiv_id": "physics/0111213",
"authors": [
"M. Mudrich",
"S. Kraft",
"K. Singer",
"R. Grimm",
"A. Mosk",
"M. Weidemuller"
],
"categories": [
"physics.atom-ph",
"physics.gen-ph"
],
"doi": "10.1103/PhysRevLett.88.253001",
"journal_ref": "Phys. Rev. Lett. 88, 253001 (2002).",
"title": "Sympathetic Cooling with Two Atomic Species in an Optical Trap",
"url": "https://arxiv.org/abs/physics/0111213"
},
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