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Bose–Einstein condensation

Getting excited about helium

Creating a quantum fluid from a gas of excited helium atoms is not easy — the atoms tend to self-destruct. But two groups in France have pulled it off.

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Figure 1: Collisions between excited helium atoms.

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Correspondence to Randall G. Hulet.

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Hulet, R. Getting excited about helium. Nature 411, 425–427 (2001). https://doi.org/10.1038/35078170

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