Vortex density spectrum of quantum turbulence

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 meas...

Full description

Saved in:
Bibliographic Details
Published inEurophysics letters Vol. 77; no. 6; pp. 66002 - 66002 (5)
Main Authors Roche, P.-E, Diribarne, P, Didelot, T, Français, O, Rousseau, L, Willaime, H
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.03.2007
EDP Sciences
European Physical Society / EDP Sciences / Società Italiana di Fisica / IOP Publishing
Subjects
47.37.+q
67.40.Vs
67.57.De
Condensed Matter
Engineering Sciences
Fluid mechanics
Fluids mechanics
Mechanics
Other
Physics
enstrophy
4He
coflow
vorticity
spectrum
quantum turbulence
superfluid
second sound
Online AccessGet full text

Cover

More Information
Summary: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 $(-5/3)$ power law. The physical interpretation is discussed.
Bibliography:ark:/67375/80W-DS3C445L-B
istex:A30F2AAFB9E9C04DA7851D46441BD854890061EC
publisher-ID:epl10157
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/77/66002