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Brief Communications
Nature 441, 588 (1 June 2006) | doi:10.1038/441588a; Published online 31 May 2006
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SUPERFLUID HELIUM: Visualization of quantized vortices
Gregory P. Bewley1,2, Daniel P. Lathrop1 & Katepalli R. Sreenivasan1,3
Abstract
When liquid helium is cooled to below its phase transition at 2.172 K, vortices appear with cores that are only ångströms in diameter, about which the fluid circulates with quantized angular momentum1. Here we generate small particles of solid hydrogen that can be used to image the cores of quantized vortices in their three-dimensional environment of liquid helium. This technique enables the geometry and interactions of these vortices to be observed directly.
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