Sympathetic cooling and collisional properties of a Rb-Cs mixture

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.061401· OSTI ID:20717849

Anderlini, M; Courtade, E; Cristiani, M; Cossart, D; Ciampini, D; Sias, C; Morsch, O; Arimondo, E ^[1]

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1. INFM, Dipartimento di Fisica E. Fermi, Universita di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa (Italy)

We report on measurements of the collisional properties of a mixture of {sup 133}Cs and {sup 87}Rb atoms in a magnetic trap at {mu}K temperatures. By selectively evaporating the Rb atoms using a radio-frequency field, we achieved sympathetic cooling of Cs down to a few {mu}K. The interspecies collisional cross section was determined through rethermalization measurements, leading to good agreement with a theoretical prediction of 595a{sub 0} for the triplet s-wave scattering length for Rb in the vertical bar F=2,m{sub F}=2> and Cs in the vertical bar F=4,m{sub F}=4> magnetic states. We briefly speculate on the prospects for reaching the Bose-Einstein condensation of Cs inside a magnetic trap through sympathetic cooling.

• OSTI ID: 20717849
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
CESIUM 133
COOLING
MIXTURES
RADIOWAVE RADIATION
RUBIDIUM 87
S WAVES
SCATTERING LENGTHS
TRAPS
TRIPLETS