Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures
arXiv:physics/0601086 · doi:10.1103/PhysRevA.73.023408
Abstract
Based on an experimental study of two-body and three-body collisions in ultracold strontium samples, a novel optical-sympathetic cooling method in isotopic mixtures is demonstrated. Without evaporative cooling, a phase-space density of $6\times10^{-2}$ is obtained with a high spatial density that should allow to overcome the difficulties encountered so far to reach quantum degeneracy for Sr atoms.
5 pages, 4 figures