Measurements of Vortex Line Density Generated by a Quartz Tuning Fork in Superfluid 4He

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10336057" target="_blank" >RIV/00216208:11320/16:10336057 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10909-015-1397-4" target="_blank" >http://dx.doi.org/10.1007/s10909-015-1397-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10909-015-1397-4" target="_blank" >10.1007/s10909-015-1397-4</a>

Result language
angličtina
Original language name
Measurements of Vortex Line Density Generated by a Quartz Tuning Fork in Superfluid 4He
Original language description
We present proof-of-concept measurements of the vortex line density generated by a quartz tuning fork resonator probed by the attenuation of second sound in superfluid 4He at 1.6 K. The force-velocity response of a quartz tuning fork operating at a frequency of 31 kHz exhibited the onset of extra damping at a velocity of 0.5 msMINUS SIGN 1. Attenuation of the 5th resonant mode of second sound was observed at the same velocity, indicating the production of vortex lines. Our measurements demonstrate that an increase of the drag coefficient corresponds to the development of quantum turbulence.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Project
<a href="/en/project/GA14-02005S" target="_blank" >GA14-02005S: Cryogenic helium as a working fluid to study classical and quantum turbulence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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