Vortex density spectrum of quantum turbulence

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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Submitted on : Sunday, January 7, 2007 - 9:44:06 PM
Last modification on : Thursday, April 4, 2019 - 10:18:04 AM
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Philippe-Emmanuel Roche, Pantxo Diribarne, Thomas Didelot, Olivier Français, Lionel Rousseau, et al.. Vortex density spectrum of quantum turbulence. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2007, 77, pp.66002. ⟨10.1209/0295-5075/77/66002⟩. ⟨hal-00122996⟩

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