Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures
Ferrari, G. · Drullinger, R. E. · Poli, N. · Sorrentino, F. · Tino, G. M.
الأصل · EN
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 6×10⁻² is obtained with a high spatial density that should allow to overcome the difficulties encountered so far to reach quantum degeneracy for Sr atoms.
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