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Vortex density spectrum of quantum turbulence

Philippe-Emmanuel P. -E. Roche·Pantxo Diribarne·Thomas Didelot·Olivier Français·Lionel Rousseau·Hervé Willaime
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Abstract

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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Philippe-Emmanuel P. -E. Roche, Pantxo Diribarne, Thomas Didelot, Olivier Français, Lionel Rousseau, Hervé Willaime. 2007-01-08. Vortex density spectrum of quantum turbulence. https://doi.org/10.1209/0295-5075%2F77%2F66002

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