Sympathetic cooling and collisional properties of a Rb-Cs mixture
Authors: Anderlini M., Courtade E., Cristiani M., Cossart D., Ciampini D., Sias C., Morsch O., Arimondo E.
Autors Affiliation: INFM, Dipartimento di Fisica E. Fermi, Università di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
Abstract: We report on measurements of the collisional properties of a mixture of Cs-133 and Rb-87 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(0) for the triplet s-wave scattering length for Rb in the parallel to F=2,m(F)=2 > and Cs in the parallel to F=4,m(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.
Journal/Review: PHYSICAL REVIEW A
Volume: 71 (6) Pages from: 061401-1 to: 061401-4
KeyWords: Cold atoms; Atomic collisions; DOI: 10.1103/PhysRevA.71.061401Citations: 40data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-01-29References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here