Vortex density spectrum of quantum turbulence

Details Vortex density spectrum of quantum turbulence Vortex density spectrum of quantum turbulence

2007-01-08

arxiv.org/abs/cond-mat/0701136v1

Europhysics Letters 77 (03/2007) 66002

Physics

Condensed Matter

Other Condensed Matter

Submitted to Europhys. Lett

Scientific paper

10.1209/0295-5075/77/66002

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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