Vortex density spectrum of quantum turbulence
classification
❄️ cond-mat.other
physics.class-ph
keywords
densityvortexmeasurementspowerquantumspectrumturbulentacross
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The fluctuations of the vortex density in a turbulent quantum fluid are deduced from local second-sound attenuation measurements. These measurements are performed with a micromachined open-cavity resonator inserted across a flow of turbulent He-II near 1.6 K. The power spectrum of the measured vortex line density is compatible with a (-5/3) power law. The physical interpretation, still open, is discussed.
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