| Issue |
EPL
Volume 77, Number 6, March 2007
|
|
|---|---|---|
| Article Number | 66002 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/77/66002 | |
| Published online | 28 February 2007 | |
Vortex density spectrum of quantum turbulence
1
Institut NÉEL, CNRS & Université J. Fourier - 25 avenue des Martyrs, BP166, F-38042 Grenoble Cedex 9, France
2
Groupe ESIEE, Chambre de Commerce et d'Industrie de Paris - Cité Descartes, BP99, 2 boulevard Blaise Pascal, 93162 Noisy le Grand Cedex, France
3
Conservatoire National des Arts et Métiers, Laboratoire de Physique - 2 rue Conté, 75003 Paris, France
4
Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris - 10 rue Vauquelin, 75231 Paris Cedex 05, France
Received:
25
October
2006
Accepted:
29
January
2007
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 frequency power spectrum of the measured vortex line density is compatible with a 
power law. The physical interpretation is discussed.
PACS: 67.40.Vs – Vortices and turbulence / 47.37.+q – Hydrodynamic aspects of superfluidity; quantum fluids / 67.57.De – Quantum fluids and solids; liquid and solid helium: Superflow and hydro- dynamics
© Europhysics Letters Association, 2007
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