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Laser Technique Cools Broader Range of Elements

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A versatile laser cooling technique proposed 15 years ago now has partial experimental verification. In principle the technique could be used to cool a broader range of elements than is possible with current methods. Researchers at the University of Southampton used matter-wave interferometry to lower a sample of already-cold rubidium from 21 to 3 μK — nearly to the fundamental temperature limit of laser cooling. "There is a great push to extend ultracold physics to the rest of the periodic table to explore a greater wealth of fundamental processes and develop new...Read full article

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