Sympathetic cooling in a mixture of diamagnetic and paramagnetic atoms
arXiv:0709.0827 · doi:10.1088/0953-4075/43/20/205309
Abstract
We have experimentally realized a hybrid trap for ultracold paramagnetic rubidium and diamagnetic ytterbium atoms by combining a bichromatic optical dipole trap for ytterbium with a Ioffe-Pritchard-type magnetic trap for rubidium. In this hybrid trap, sympathetic cooling of five different ytterbium isotopes through elastic collisions with rubidium was achieved. A strong dependence of the interspecies collisional cross section on the mass of the ytterbium isotope was observed.
4 pages, 4 figures